bluuebunny/crossref_metadata_2025 huggingface dataset:
S Trajectory Based on Sliding Mode Control for Unmanned Aerial Vehicle Slung-load System
Authors: Wang Yikun , Lu Jiajun , Huang Jingwen
Published: December 2023

For unmanned aerial vehicles (UAVs) slung-load systems, the payload of UAVs may suffer swing caused by inertia and external disturbances during the delivery process, posing a threat to system safety. Simultaneously tracking the trajectory and suppressing the payload swing is a challenging task. In this paper, a control design method is presented for trajectory tracking and swing suppression for a UAV delivery system. A feedforward design with the S-shaped trajectory is employed to suppress the payload swing, and a feedback hierarchical sliding mode control is utilized for trajectory tracking. Furthermore, stability analysis of the control system is conducted using the Lyapunov function, and simulation experiments are performed in MATLAB to validate the performance of the controller.
Research on Temperature Compensation of Shunt Type Current Sensor
Authors: Xu Chunyang , Jiang Xueping , Wang Haibin
Published: December 2023

For the temperature drift problem of a shunt-type current sensor, this paper adopts a temperature compensation model based on the fusion of temperature segmentation linear and clustering division, which focuses on the consideration of the current sensor system as a whole, as well as versatility and complexity, etc., to ensure the measurement accuracy of a single sensor, while improving the speed of multi-sensor temperature compensation. Experimental results show that the current sensor after the model compensation, in the 15 A or more experiments measured in the current range of the accuracy is maintained within ±0.5%, compared with the sensor before the compensation of the measurement accuracy increased by 3%, but also reached the domestic and foreign current sensor products in the corresponding range of the compensation of the accuracy. The model effectively improves the temperature stability of the sensor and the system detection accuracy and provides practical application value for the temperature compensation of shunt-type current sensors in mass production.
Research on global path planning of intelligent vehicles based on improved ant colony algorithm
Authors: Hang Peng , Gong Naifa , Liu Yingjie , Yan Yan , Hu Yiliang
Published: December 2023

According to the needs of intelligent vehicles, this paper proposes a global path planning algorithm based on improved ant colony algorithm to address the problems of slow convergence speed and multiple path bends in ant colony algorithm. By redefining the heuristic function of ant colony algorithm, adopting fallback and fill mechanisms, setting safe distances, modifying pheromone concentration update rules, and limiting the range of pheromone concentration, the ant colony algorithm is improved. And by deleting redundant points on the path, selecting key turning points and cubic B-spline curves for path smoothing, the planned path is shortest and smooth, which can meet the needs of path following. Through simulation, the improved ant colony algorithm has the advantages of fast convergence and smooth path.
Data Link Effectiveness Evaluation Method Based on Improved ADC Model
Authors: Guo Pengju , Chen Liang
Published: December 2023

Aiming at the problem of innumerable data link effectiveness evaluation bases, the battlefield environment adaptability is introduced into the ADC model to improve the accuracy of the ADC evaluation method based on the analysis of the ADC model. According to the mission and using mode of data link equipment, the evaluation index system and calculation method of data link equipment effectiveness are proposed, and the quantitative evaluation of data link system effectiveness is realized. The validity and scientificity of the model are verified by the example analysis, which provides an effective method for the effectiveness evaluation of data link equipment.
Application of Variable Theory Domain Fuzzy Control Algorithm for Room Temperature Control
Authors: Li Duanzheng , Ahmat Mutellip , Cao Hongqing , Di Fankai
Published: December 2023

With the development of automatic control in the HVAC industry, more and more buildings have adopted automatic control of air conditioning, HVAC systems, but most of the control results can not be satisfactory. The research object of this paper is the elevator machine room equipped HVAC, through accurate control of that room temperature can greatly reduce the elevator shutdown caused by the action of the temperature protection circuit, so as to improve the safety of elevator operation. This paper gives three different temperature control methods, establishes the math representation of the temperature system in the machine room, specifically designs the classical PID controllers, Fuzzy PID controllers and variable domain Fuzzy PID controller, and simulates and analyzes the three algorithms respectively, The results indicate that in comparing the above three algorithms, the variable domain fuzzy PID algorithm has an adjustment time of 63s, and the overshooting amount of 0.4%, which is the best among the three control algorithms.
Research on Fault-tolerant Control Allocation Technology for X-rudder UUV
Authors: Xu Hao , Feng Jiaxiang , Zhang Pei , Ma Chenfei
Published: December 2023

X-rudder UUV is a typical redundant control system with high reliability and high control difficulty. This article researches the reconfigurable control allocation technology of X-rudder UUV control, analyzes and sorts out typical fault types of X-rudder UUV, and designs a reconfigurable control allocation algorithm without changing the high-level control law. In the case of partial failure of the rudder surface, the remaining rudder surface is used to complete the movement of UUV, improving the robustness of UUV to faults and damage. The effectiveness of the proposed fault-tolerant control allocation method is verified by simulation.
Fulfillment of Green Open Space by the Regional Office in Semarang City
Authors: Indarja Indarja , Herawati Ratna , Fachrani Kun Fadira
Published: December 2023

This paper proposes to reveal steps and efforts done by Regional Office in manifesting Green Open Space (GOS) in Semarang City to establish integrated natural and human resources. This study used a normative juridical approach, departing from legal materials, which were analyzed and clarified through interviews in the field. The results indicate that efforts taken by the Regional Office align with the laws. However, some obstacles still exist. Since the promulgation of GOS in 2022, the realization of GOS in Semarang City has only reached 15% of the targeted 30% thus far. Therefore, the synergy between Regional Office and the community is needed.
Omnibus Law on Job Creation: Tug of War over Environmental Protection Authority Amid the Climate Crisis
Authors: Najib Ahmad Ainun , Saraswati Retno
Published: December 2023

This article analyses the relationship between national and local governments regarding environmental protection amid the climate crisis after the Omnibus Law on Job Creation issuance. It is a normative study of legal concepts in the statutory system. The results point out that Omnibus Law on Job Creation has changed the paradigm of environmental protection from “permission” to “consent” or “agreement.” The policy weakened the local government’s role in protecting the environment amidst the climate crisis. Apart from that, the Omnibus Law has also created a pattern of centralization by reducing the authority of local governments—which is only interpreted as a deconcentrated primate in implementing the law provisions.
Reinforcement of Green Constitution: Efforts for Manifesting Ecocracy in Indonesia
Authors: Diamantina Amalia , Yulida Devi
Published: December 2023

This article primarily focuses on analyzing the reinforcement of the green constitution as an effort to manifest ecocracy in Indonesia. The study was analytical and descriptive, applying a normative juridical method with a legal approach. The results point out that the Indonesian Constitution on siders environmental rights part of human rights. Even so, environmental protection is unsophisticated compared to other countries that have implemented green constitutions holistically. Therefore, the reinforcement of environmental protection by placing environmental sovereignty equal to human sovereignty and affirming the use of natural resources sustainably—as proved by state responsibility. Holistic reinforcement strengthens the green constitution so that ecocracy in state administration can be manifested.
Environmental Responsibilities of Local Governments as PI Holders in Upstream Oil and Gas Operations
Authors: Hasiholan A , Murwadji T , Sukarsa D E
Published: December 2023

Allocating participating interest (“PI”) is crucial for managing upstream oil and gas operations as it determines the rights and obligations of contractors, including their responsibility to ensure health, safety, and environmental awareness under the regulatory framework, production sharing contract (“PSC”) or operations agreement (“OA”). This paper examines the role of local governments as 10% PI holders towards promoting environmental compliance and ensuring sustainable oil and gas development. The research adopts a juridical-normative approach by reviewing secondary data sources and academic literatures in order to identify specific forms of environmental responsibility available to local governments as 10% PI holders under the progressive law doctrine, relevant regulations within the context of upstream operations and provide recommendations to improve their effectiveness in fulfilling their environmental obligations. The findings contribute to the sustainable management of the sector by providing valuable regulatory insights into the environmental responsibility of local governments as 10% PI holders.
Regulation Urgency of the Misleading “Greenwashing” Marketing Concept in Indonesia
Authors: Irawati  , Prananingtyas Paramita , Wulan Retno Catur
Published: December 2023

Greenwashing is a term that refers to a company’s marketing strategy or activities in providing an environmentally friendly image, both in terms of products produced, objectives, or corporate values, without actually carrying out activities that have a good impact on the environment. Greenwashing activities are inseparable from green marketing, a product marketing activity that focuses on the environmental awareness of potential consumers. Consumer protection for greenwashing products in Indonesia has not been specifically regulated. Indonesia has several legal instruments that can be linked to greenwashing activities. Among them are consumer protection law, broadcasting law, and environmental law. As a developed country, America has greater environmental awareness in terms of regulation and law enforcement authority on greenwashing activities. The United States has published an FTC Green Guides (Green Guides) guideline. However, through environmental regulations, Indonesia continues to develop environmental and economic instruments through the eco-label system.
Mediation as Dispute Resolution in People’s Mining
Authors: Purwanti Ani , Setiawan Fajar Ahmad , Natalis Aga
Published: December 2023

People’s mining contributes to conflict and environmental degradation, particularly in developing nations. This is a socio-legal study. The study’s findings indicate that mediation is viable, cost-effective, and respectful for resolving smallholder mining disputes. Mediation is a voluntary procedure involving a neutral third party to reach an acceptable solution for both parties. The advantages of mediation include time and cost savings, the maintenance of relationships between parties, the incorporation of local knowledge and cultural practices, the promotion of environmental sustainability, and the facilitation of the development of legal and regulatory frameworks that support the sustainable development of smallholder mining communities. Although mediation faces obstacles such as a lack of trained mediators, potential power imbalances between parties, and the need for trust and cooperation, its usefulness in resolving conflicts and preserving the environment makes it essential for promoting sustainable development.
Green Financial Crime: Expose About Financial Crime In The Environment And Renewable Energy World
Authors: Endriana Muchamad Satria , Yusriadi  , Silviana Ana , Fernando Zico Junius
Published: December 2023

Financial crimes related to the environment and renewable energy sector, known as green financial crimes, have become a global concern due to their negative impact on the economy, environment, and sustainable development. This research aims to find out the phenomenon of green financial crimes, the impacts caused, as well as the challenges and obstacles in overcoming this problem. This research uses a doctrinal, descriptive-perscriptive research method using content analysis. To address these issues, this study recommends strategies involving the government, private sector, and society, such as counselling, strict supervision, and strict law enforcement. With a better understanding of green finance crime, it is hoped that various parties can work together to combat this crime so that renewable energy development and environmental preservation can run more efficiently and effectively to achieve sustainable development goals.
Empowering the Intellectual Property Rights System to Address the Impact of Climate Change on Agricultural Sector
Authors: Soelistyo Henry
Published: December 2023

In the last few decades, climate change has created a number of weather anomalies along with their distortive impacts on the environment. Various forms of natural disasters such as floods, landslides, droughts and forest fires disrupt the cultivation of the agricultural sector and strengthen food security. The problem is, the impact of climate change like that has caused crop failures, food crises and even social crises. In fact, climate change is a major risk to good development outcomes. Consequently, there is a need to integrate climate action into the core of development agenda. This sociological juridical research aims to examine what policies and steps the government must prepare to save the agricultural sector, food availability, and the environment. For Indonesia, empowering Intellectual Property Rights (IPR) is a strategy that needs to be used as a guide and direction. The legal system for patents, new plant varieties and geographical indications needs to be used as an instrument as well as a driving force to support agricultural development, food security and distribution of commodities for the people of Indonesia whose population continues to grow.
Universities Collaboration Policies in Technology Development to Achieve Sustainable Environmental Management at the International Level
Authors: Arifin R , Damayanti F , Zainurohmah Z , Waspiah W
Published: December 2023

This research examines the role of university cooperation policies in advancing technology development to achieve sustainable environmental management on an international scale. In an era characterized by increasing environmental challenges, such as climate change and resource depletion, universities have an important role to play in driving innovation and driving solutions. This article explores the importance of collaboration between universities across borders to address global environmental issues effectively, analyzing the various policies and initiatives that facilitate such collaboration. By uniting various expertise, resources, and perspectives, university collaborations can lead to cutting-edge technologies to develop sustainable solutions. Furthermore, this article emphasizes the importance of technology transfer and commercialization strategies to ensure the practical application of research results. Ultimately, this article underscores the transformative potential of university collaboration policies in promoting environmental sustainability and calls for increased efforts to enhance global collaboration among academic institutions, coordination, and monitoring of cooperation.
The Use of Administrative Court for Climate Change Litigation
Authors: Harnowo T , Habib F H
Published: December 2023

Climate change litigation is a litigation which directly and indirectly related to climate change or climate change policy. Administrative court is one of the forums where parties can challenge this issue. The broader competency of the Indonesian Administrative Court based on Government Administration Law, making issues regarding climate change caused by government actions can be resolved in a more favorable manner. This can be achieved through the addition of sustainability in General Principles of Good Corporate Governance. This paper will analyze relevant law and regulations, and cases to explore the advantages of administrative court in climate litigation. This paper provides a suggestion to optimize the role of Indonesia’s administrative court to be in accordance with the need of environmental protection.
National Strategic Development Project in Environmental Law: Economic Growth or Reduction in Public Participation
Authors: Hari Josua , Naiborhu Netty S.R.
Published: December 2023

Public participation is fundamental aspect in environmental decision making though environmental impact assessment. Government in developing country, such as Indonesia tends to use constitutional law as a legitimation for development without consider the rights of people in the society. Purpose the article is analysing the implementation of public participation in national strategic development project. The article uses normative method to check regulation coherency. Comparative approach also uses to find problems in environmental decision making that is related to national strategic development project and conceptual approach as well to make an ideal trajectory for a model law. Result finds that information and access to participate have a major role on how government do a project for development. In conclusion, public participation in environmental decision making is important because it contains access to information, access to participate, and access to justice for creating democratic and establish genuine public participation.
Environmental protection barriers in Indonesia in the form of Administrative Effort
Authors: Utama Kartika Widya , Saraswati Retno , Putrijanti Aju , Sukmadewi Yudhitiya Dyah
Published: December 2023

In Indonesia, environmental protection is closely linked with administrative policy. The Indonesian government has recognized the importance of protecting the environment and has implemented various policies and regulations to promote sustainable development. One of the main administrative policies in Indonesia related to environmental protection is the Environmental Impact Assessment (EIA). Before a project or activity is permitted, the potential environmental implications are assessed through the EIA process. This policy is mandated by law and is enforced by the Ministry of Environment and Forestry. Environmentalists have long criticized the EIA process due to its untransparent process. Various complaints and lawsuits about the validity of the EIA have arisen through the Administrative Court in Indonesia. However, these lawsuits are often not accepted because they need to comply with the state administrative court procedural law, which will be the focus of this paper.
Climate Justice in Coral Reef Management: Learning from the Savu Sea Marine National Park Area
Authors: Soemarmi Amiek , Rafsanjani Luthfi Hafidz
Published: December 2023

This study focuses on analyzing climate justice in the management and assessing the protection model of coral reefs in the Savu Sea Marine National Park (MNP) to realize climate justice sustainably. The research method used a normative-empirical research method with a flow model of data analysis, which examines the implementation or enforcement of favorable legal provisions and written literature or documents associated with specific legal events in society. The research results indicate various potential coral reef resources in Sawu Sea MNP, one of the world’s coral triangle areas. In addition, several local wisdom owned by the community around the coast utilizing fishery resources, especially coral reefs, such as Tasaeb Talas, Kowa Hole, Panadahi, and Liku Ketuga.
Climate Change and Environmental Justice in Constitutional Law
Authors: Pinilih Sekar Anggun Gading , Rahmansyah Arief
Published: December 2023

Climate change has become a global issue that has a definite influence in regional and international stage. This extreme phenomenon has an impact on biodiversity. This article examines the extent of Indonesia’s constitutional protection against climate change issues to achieve environmental justice. This study is a qualitative research by exploring legal materials in the form of regulations, books, and scientific journal articles. Based on the research results, the Indonesian Constitution protected the environment before and after the amendment. However, it is still part of or supports the fulfilment of human rights and national development. Therefore, the issue of climate change, which should be a shared interest of the government and citizens, should be given its own status as a legal subject to natural objects in the environment to provide more protection and enforcement from damage, as well as fulfil justice for the environment itself.
Questioning a Fair Settlement as The Legal Resolution of Global Interests
Authors: Mulyono A T , Karo R K
Published: December 2023

The purpose of this paper is to describe the existence of a conflict of interest between nations related to their pursuit of sustainable development. This study adopts a historical approach to examine the events and movements with a focus on the historical evolution of the global environment and natural resources management landscape. The research reveals that various international events and movements indicated the conflict of interest between countries. Despite efforts to reach a fair and equitable resolution, conflicting interests persist among stakeholders, with developed nations leveraging their financial and technological superiority to put natural resources on layaway while developing nations struggle to keep up and ask for a little time. The presence of a conflict of interest in this particular case, although possibly unintended, has indirectly contributed to rising expenses and therefore potential losses for developing countries.
Opportunities for Imposing Carbon Tax Through the Aceh Qanun in the Perspective of Inter-generational Justice
Authors: Suntoro A , Utomo NA , Rini NS
Published: December 2023

The Indonesian government’s policy in responding to the energy transition opens opportunities for local government participation to mitigate the energy transition and adapt to climate change. The Government of Aceh, with exceptional autonomy, made a breakthrough by paying attention to the impact of managing Oil and Gas Natural Resources through a carbon tax. This article analyses the perspective of intra-generational justice in the energy transition faced with special autonomy and looks for manifestations of participation through regional autonomy gaps. Localizing carbon taxes only from an economic perspective is far from benefiting the next generation. When examined, it is the key to the principle of sustainability to reduce the impact of oil and gas natural resources production in Aceh. The polycentric policy model between the government and local governments has a strategic role by taking advantage of various policies and reducing the impact of existing policies.
Standardization of Private Aircraft: Implications of Climate Change
Authors: Prabandari Adya Paramita , Puteri Efrema Ardratya Prakasita
Published: December 2023

Aviation being at the heart of the highest form of travel contributing to greenhouse emissions, has raised concern regarding climate change as aviation has evolved to become a major method of transportation in today’s era. The rise of demand for the privatization of aircraft for personal use has simultaneously increased. Whilst commercial aircraft still produce emissions, privatized aircraft emit much larger emissions, causing a disproportionate production of emissions per passenger on board. The lack of legislation on using private aircraft at the national and international levels has left the disproportionate emissions production unregulated. Within this paper, the necessity of policies to minimize the effects of aviation on private aircraft will be further discussed.
Juridical Analysis of Productive Land WAQF Assets Management Based on Empowerment Conservation of Environmental Functions
Authors: Islamiyati Islamiyati
Published: December 2023

BWI participates in preserving nature with the waqf innovation movement and forming a professional trustee (nadzir) to manage productive land waqf assets based on environmental function preservation. However, this has yet to be explained textually in the Waqf Law. This study analyzes the juridical management of productive land waqf assets based on preserving environmental functions. This is a literature study using a normative juridical and legal interpretation approach. The results of the study show that the management of productive land waqf assets based on the preservation of environmental functions can be understood through the interpretation of Articles 5, 22, 40, 42, 47, 49, and 54 of the Waqf Law, which understands that the management of productive land waqf assets is based on the preservation of environmental functions life, it is essential to do. The goal is to improve the general welfare and shape welfare. Management of productive land waqf assets based on the preservation of environmental functions following the objectives of the formation and characteristics of Islamic law, namely being able to maintain religion and the universe. This shows that Islamic law is always flexible and follows the developments and needs of society.
Influence of coconut fibre on strength of concrete made with ggbs as partial replacement to cement
Authors: Yuvaraj M S , Pavan Kumar N , Surya Prakash M , Karthik M , Nithesh Kumar Reddy N
Published: December 2023

Concrete, a structural material in buildings is made of aggregate, which is a dense, chemically inert material, cement, and water. Concrete’s production, use, and environmental impact are complicated, influenced in part by the direct effects of infrastructure and buildings as well as CO2 emissions. Cement, a key ingredient with its own negative social and environmental effects, is a significant part of what makes concrete. To reduce CO2 emissions, it is important to substitute another material for cement. Slag is one of these alternative materials. It is a byproduct of steel factories that is produced in blast furnaces during the iron-ore separation process. The resulting granulated slag is further ground in a spinning ball mill creating a very fine powder known as GGBS. CaO, SiO2, Al2O3, and MgO are the primary components of blast furnace slag. These are minerals that are present in the majority of cementitious materials. The husk of the coconut fruit is used to make coconut fibre, one of the natural fibres that are widely available in tropical areas. Globally, 500 000 metric tonnes of coconut fibre is produced each year, primarily in Sri Lanka and India. Finding ways to make concrete, the most frequently used building material in the world, more stable and strong would undoubtedly be beneficial. The usage of coconut fibre to reinforce concrete has increased due to the quantity and accessibility of the material. The mix design for the study’s M30 grade concrete was carried out. The specimens were cast by partially substituting cement with GGBS in escalating weight percentages of 0 to 50, with the ideal replacement content being discovered. Later, coconut fibre was added to GGBS-based concrete in percentages ranging from 1 to 4 by weight. The specimens were cast, allowed to cure, and then tested at 7 and 28 days for compressive,.split tensile, and flexural strength. According to the findings, using 30% GGBS as a partial replacement for cement with 1% coconut fibre addition has resulted in high strength than control mix.
Fresh and hardened behaviour of Geopolymer activated with Water Glass
Authors: Rajashekar Sangi , Sesha Sreenivas B. , Shanker K.
Published: December 2023

To activate Geopolymer reaction, previous studies have employed combination of sodium silicate(Na2SiO3) and sodium hydroxide(NaOH) solution employed as activator for activation of Flyash-based Geopolymer concrete, but these methods were found to be un-economical. To make Geopolymer concrete(GPC) production more cost-effective, water glass has been explored as an alternative activator, it is an impure form of sodium silicate. Water Glass(WG) of silica modulus(Ms) 1.99 was used as the activator, and several combinations of Flyash and GGBS were used as binding material to assess the consistency, setting, strength, and acid resistance of Geopolymer mortar. Present study demonstrates that using Water Glass as the activator with specific combinations of Flyash and GGBS are used as binding materials, in ambient curing circumstances is appropriate for the construction sector. Additionally, the Water Glass solution effectively counteracted the quick setting properties of Geopolymer when a high percentage of GGBS was incorporated into the mix. By employing this innovative approach, it becomes possible to reduce carbon dioxide emissions associated with cement production and utilize Flyash waste productively, offering a more environmentally sustainable solution for the construction sector. Such advancements in Geopolymer concrete technology hold great promise in mitigating the environmental impact of construction activities and contributing to a greener future.
Evaluating the Mechanical Performance of Waste Glass Powder as a Fine Aggregate Substitute to Enhance Sustainability in Concrete Production
Authors: Pampana Lavanya Devi , Paluri Yeswanth , Rebka Y , Hemanth A
Published: December 2023

The concrete industry poses a significant challenge to sustainability since it ranks among the foremost users of natural resources. The utilization of river sand as a fine aggregate result in the degradation of natural resources, depletion of groundwater levels, subsidence of bridge piers, and degradation of riverbeds. By substituting fine aggregate with waste glass in a specified proportion and gradation, the requirement for river sand may be reduced, therefore mitigating the adverse impacts of river dredging. This substitution has the potential to contribute to the sustainability of the concrete building sector. The main objective of this study is to examine the use of waste glass powder (WGP) in concrete and evaluate its influence on the strength characteristics and the overall cost of the concrete. The chemical composition of natural sand and WGP exhibits similarities, hence enabling the potential for partial substitution of sand with WGP in concrete. This project involves the use of WGP as a partial substitute for sand in the production of M20 grade concrete. Concrete specimens were casted using different percentages of glass powder as a replacement for sand, namely 0% (Control Mix), 10%, 20%, 30%, and 40%. These specimens were then subjected to testing to evaluate their compressive, split tensile, and flexural strengths. The test results obtained for concrete mixed with WGP are compared to those of regular concrete. The findings of the study revealed that WGP has the potential to serve as a viable substitute for fine aggregate in certain applications.
Bacillus Induced Calcium Carbonate Precipitate for Healing of Concrete
Authors: Prafulla Padvi , Hansa Jeswani
Published: December 2023

Concrete is good in compression but weak in tension. The strength of concrete can be enhanced by using admixtures and biological end products during the process of mixing. The cracks appear in concrete even after taking proper measures. Bacterial induction of calcium carbonate precipitate can be a solution to cure cracking as well as increase the strength of concrete. Microbial induction using specific species of bacteria can enhance the strength of concrete as well as give it the ability to self heal the cracks by calcium carbonate precipitate.

In this research paper, bacterial cells of Bacillus sp. bacteria are induced in concrete which forms a calcium carbonate precipitate by reacting with calcium lactate and oxygen along with moisture present in the cracks. Specific species of Bacillus are able to live and adapt the alkaline concrete environment till the appearance of cracks. In this research, bacterial behavior after inducing it in concrete crack and its ability to form the calcium carbonate is studied. It is found by pulse velocity testing that the reduction in velocity after 30 and 45 days is 41.82% and 44.63% respectively when spraying with bacterial culture broth. The maximum increase in compressive strength when cement is replaced with calcium lactate and water by bacterial broth is 4.6%, 11.7% and 24.5% percentage at 3, 14 days and 28 days respectively for mix design with 2.5% Calcium lactate and 20% Bacillus solution where 4 different mix design were used.. The results are highly encouraging with respect to use of strains of bacteria for self-healing purpose.
Structural Behavior Comparison on Earthquake Resistance of High-Rise Mall Building (Framed Structure,Flat Slab and PT Flat slab)
Authors: Basaraboyina Moshe , Velivela Ramesh , Reddy Garimireddy Siva Rami , Ravi Kumar N S M
Published: December 2023

The rate of urban population growth and the amount of available space had a significant impact on the construction of high-rise mall buildings in developing countries like the USA, UK, Australia, and Hong Kong. These high-rise mall constructions may be constructed using a variety of structural techniques. Today, RC Frame structures are often employed in constructing. Usually, these structures are employed to counteract the sizeable moments brought on by applied stresses. On the other hand, flat slab structural systems, in which the slab is directly supported by columns, have lately been adopted in many buildings because they have the advantage of greater clear floor-to-floor heights to satisfy the economical, easier form-work, quicker construction duration, and architectural needs. On the other hand, with a post-tensioned slab, the PT flat slab Structural System uses high-strength tensioned steel strands to compress the slab, maintaining the bulk of the concrete in compression. When compared to RC framed structural system, this results in a very efficient construction that minimizes partial consumption and reduces the economic span range. Three cellar+Ground+9 higher floors structural models of a high rise mall building with RC framed structure, flat slab, and PT flat slab structural system arrangement are taken into consideration in the current study. The study is completed by taking into account seismic zone II and type I soil condition, and it takes into consideration the susceptibility of purely RC framed structures, solely flat slab, and completely PT flat slab systems. The structural behavior of an RC-framed structure, a flat slab, and a PT flat slab are being compared for earthquake loads. The response spectrum approach is used to do the analysis.With the use of analytical tools, parameters such as storey displacement, storey drift, base shear, and storey shear are calculated. The findings are then compared between three structural system.
Flexural Behaviour of Skinned Beams with Different Shapes of Steel Mesh Confinements
Authors: Sheena Ecclesia G. , Krishna Prasanna P.
Published: December 2023

- Jacketing is a popular technique in modern civil engineering for strengthening and modifying structures. It is used to increase bearing load capacity or to restore structural design integrity after the structural design has been altered or after a structural member has failed. This method is typically utilized for horizontal surfaces such as the bottom and sides of beams and vertical surfaces such as walls and columns. This study investigates the flexural performance of high-strength concrete beams reinforced with steel wire mesh in various forms, such as hexagonal steel wire mesh, square wire mesh, and diamond wire mesh, using the concept of dual-layer concrete. At First, three sets of 450 x 50 x 50 mm beams were cast, and three different mesh configurations were confined around the beam and filled with concrete to form 500 x100 x 100 mm beams. The flexural behaviour of these beams was carefully examined under load controlling machine (UTM). The study found that adding steel wire meshes to beams as confinement enhances their total flexural strength and the behaviour of the beams failure mechanism when subjected to two-point stress. The Flexural strength has been increased by an amount of 10%, 23% and 35% respectively for hexagonal, square and diamond meshes. However, the specimen restricted with diamond mesh wrapped around the inner core performs more effectively than the specimen with Square and hexagonal wrapped around the core in terms of Stress-strain curves and Young’s Modulus.
Large Triaxial tests on Marginal soil admixed with Randomly Distributed with coir fiber and fly ash
Authors: Praveen G.V , Kurre Pandu , Bukke Lavanya
Published: December 2023

The Due to a lack of suitable granular soils, it has become necessary for various construction types to use marginal soils (soils of lower strength) at various work sites. Typically, soil with higher percentages of silt and clay (finer particles) exhibits unfavourable engineering characteristics, making it unsuitable for a variety of construction-related operations. These soils are typically possessing plasticity in nature and have low strength, especially when it comes to shear strength. Common approaches like admixture stabilisation are being implemented to enhance the strength characteristics of these soils. The quality of these marginal soils to make them amenable for construction is also being improved by the chemical additives. By adopting such procedures that involve chemical admixing for the process of modifying marginal soils, the cost of construction process rises. In this work, an effort was undertaken with regard to examine the efficacy of modifying marginal soil admixing with cement/lime and with dispersed randomly with coir fibre as reinforcing material. Additionally, shear testing was carried out by admixing fly ash. The objective of the present work is to investigate the shear strength characteristics modified marginal soil and could be affected by the reinforcement of coir fibres. Using the proposed marginal soil, a number of significant triaxial laboratory works were carried out. The experimental study is intended to provide a workable answer for increasing the shear strength of marginal soil. It was observed that the shear strength of marginal soil modified/admixed with ordinary Portland cement and reinforced with random distribution of 2 percent coir fibre and admixed with 10 percent fly ash was roughly one and half to two times that of plain marginal soil.
Analysis of Soil Behavior by Constructing the Micro Pile
Authors: Triveni Natukula , Kommu Suresh
Published: December 2023

Micro piles are piles having a diameter of less than 300 millimeters. Due to small diameter piles, this may act as reinforcement in the soil. The deep foundation in places with limited access where it is impossible to utilize larger equipment, the micropile can also be deployed. Micro piles can provide tremendous support while reducing costs, environmental effects, and building vibrations. Micro piles have been widely used in a variety of engineering applications such as increasing bearing capacities, reducing settlements, underpinning, in situ soil reinforcing, seismic retrofitting, and foundation rehabilitation. The soil behavior was analyzed by using the Plaxis 2D software. The Saturated unit weight, unsaturated unit weight, friction angle, dilatancy angle, and cohesiveness are among the criteria taken into account when analyzing the behavior of the soil. The considered parameters were assigned to the software and the output will be the lateral displacement and stresses and also to know the cross-section. The micropiles Young’s modulus, diameter, and spacing are additional factors. The behavior of soil was observed by constructing the micropile.
Interaction of Heavy Metals with Plastic Contaminated Soil
Authors: Srinidhi M , Sangeetha S , Krishna P Hari
Published: December 2023

Microplastic (MP) contamination is a threat to soil and groundwater system. Disintegration of used plastic products under exposure to solar radiations, application of sewage sludge to the soil, plastic mulching in agricultural activities leads to the formation of microplastics in significant amounts in soil. Hence there is a need from the geo environment engineering perspective on microplastic contamination in soils. Landfills and industrial areas have microplastic pollution in abundance. The presence of microplastic may alter the behaviour of liner material and surface soil in terms of heavy metal retention capacity, shrinkage, permeability and various other properties. In the present study, the soil is artificially polluted with shredded polypropylene (Pp) fragments from single use facial mask which is extensively being used in post COVID-19 situation. Heavy metals such as Lead, Nickel, Copper and Zinc at different concentrations similar to an industrially polluted soil is applied to the plastic contaminated (Pc) and normal soil. The filtrates from the test batches are studied for Total Dissolved Solids (TDS) and concentration of heavy metals using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). The obtained results concluded that plastic pollution significantly varied leached out heavy metals concentration to a maximum of 4.9 times that of normal soil. The TDS of the filtrate collected from plastic polluted soil varied by 31.29%.
Laboratory study on the spacing effect of vertical drains on the consolidation characteristics of clay
Authors: Aparna R P , Bindu J
Published: December 2023

Sand drains are extensively utilized to fasten the consolidation rate, especially in soft clay deposits. However, due to the scarcity of sand, it should be substituted with some cost-effective material. In view of this, in the current investigation, along with sand, waste materials like rice husk ash, coir pith, fly ash, and quarry dust were used as drain materials. The consolidation test was performed using Kuttanad clay, filled in a mould of 15 cm diameter and 10 cm height, allowing single drainage. A triangular pattern of three drain system was used in the study. A parametric study on the effect of the spacing of the drain on consolidation characteristics was investigated by varying the spacing/diameter ratio (s/d ratio). It was observed that the consolidation rate is more for coir pith and quarry dust drains compared to rice husk ash and fly ash drain used in the study. The consolidation rate reduces with the increase in the spacing of the drain. For achieving a particular consolidation rate, the required drain spacing has to be known. Correlations were developed to predict the spacing between the drains for attaining a particular coefficient of consolidation.
Stability Analysis of Slope Using Displacement Criteria of Soil on The Shear Plane
Authors: Bala Padmaja S , Reddy G V N , Saibaba Reddy E
Published: December 2023

Slope failure can harm structures and endanger lives due to a variety of circumstances. Landslides are such slope failures that are of abrupt, discontinuous, and complex in nature. Adopting suitable slope failure prediction tools is crucial in preventing such catastrophic failures. Conventional methods such as limit equilibrium methods applicability in stability analysis of slopes has become limited due to various limitations. The present study is to understand the slope failure mechanism using a mathematical strategy that simulates actual field conditions. Based on soil properties like the shear modulus of the soil and geometrical characteristics of the slope at failure, mathematical formulations have been developed to assess the stability of slopes. All these parameters are greatly affected by the soil mass displacement on the shearing plane at failure. The current approach demonstrates the critical safety factor, which may be more than 1, but still a threshold value where the conventional methods are lacking. The parametric analysis was conducted to ascertain the impact of displacement on crucial slope safety factors as well as for various soil parameters along the slope’s failure plane.
Analysis of Non-workers Activity-Travel Mode Choice Behaviour for the Effective Usage of Sustainable Transportation Infrastructure
Authors: Kanimozhee S , Srikanth Seelam
Published: December 2023

Homemakers, the unemployed, and retirees are examples of non-workers who typically have a greater amount of time than workers. As a result, their travel patterns, and reactions to changes in travel management measures are distinct from those of working individuals. This study provides statistical and exploratory analysis of the activity-travel node choice patterns of non-workers in Bangalore North. The study uses primary activity-travel survey data obtained by conducting person to person questionnaire survey. The data obtained provides an overview of socioeconomic characteristics and activity-travel behavior of non-workers for various activities. Public, private, and NMT vehicles are the different modes considered when determining the choice of mode of travel for the effective usage of sustainable transportation infrastructure. According to the Multinomial Logistic Regression (MNLR) analysis carried out for this study, the main factors that significantly affect non-workers’ choice of mode are gender, two-wheeler ownership, travel time, and travel distance. The analysis also reveals that non-workers don’t prefer using public transit for most of their activities. To encourage non-workers to commute more regularly by public transport, transportation professionals and governments may view this as a crucial topic for future development and planning.
Experimental research on using Quarry Dust to partially replace Natural River Sand and adding Admixtures in Concrete for Rigid Pavements
Authors: Laxmana Reddy R , Sai Kumar K , Srinivas J , Vinesh Kumar V
Published: December 2023

All over the world Concrete is widely used as a sturdy and solid material for various uses. According to International usage, it comes in second place after water. River sand, considered expensive because of its scarce availability, is utilized as one of the raw materials for Concrete. Researchers started looking for potential alternatives for river sand and recent studies by them have shown promising results in using Quarry Dust as a possible alternative for sand and for producing high-quality/strength Concrete. The present study attempted to determine the properties of Quarry Dust and its use as an alternative for river sand in Rigid Pavement construction. Various specimens of M30 Grade Concrete were casted and the test results indicate that by replacing fine aggregate with Quarry Dust the Concrete meets the requirements for Rigid Pavement construction. The strength parameters of M30 Grade Concrete in the form of Cubes, Beams and Cylinders were tested at 7, 14 and 28 days. Compressive Strength Test, Flexural Test and Split Tensile Tests were performed on the test specimens and results show that in concrete up to 40% river sand can be replaced with Quarry Dust and it can be used as an alternative for river sand in Rigid Pavement Construction.