bluuebunny/crossref_metadata_2025_split huggingface dataset:
Material aspects of high performance concrete
Authors: Vellaichamy Preetha , kumar John Mathew Wilfred Vasanth , Elangovan Arasan , Annadurai Harishkumar , Veerachamy Senthil kumar 
Published: November 2020

Abstract
High performance concrete envisages the better performance concrete in terms of strength and durability properties by the quality of constituent materials. The study emphasis on effect of mineral admixtures such as fly ash and silica fume in high performance concrete. The high performance concrete of grade M60 is prepared with replacement of 10%, 20% and 30% of cement by fly ash and 2 % and 4% of cement by silica fume as mineral admixtures of desired mix proportions as per IS 10262-1982. The chemical admixture of conplast SP430, superplasticizer of 1% is added to ensure better workability for high performance concrete mix. The mechanical properties like workability, compressive strength and split tensile strength for all different cases were studied and the results are compared to find the optimum performance of fly ash and silica fume content. The optimal percentage of fly ash is about 20% with 4% silica fume to have better strength properties.
Effect of Internal Curing Agents in Self Compacting Concrete
Authors: Muthusamy Nivethitha , Velmurugan Nandhini , Karthikeyan Yashwanth , Asokan Mohanraj , veerachamy Senthilkumar 
Published: November 2020

Abstract
The scarcity of water is the biggest challenge to India. More amount of water is utilized in construction industries for concrete curing. Steps were taken concentrating in reducing water used for curing. Controlling and monitoring the amount of water in concrete is important for both constructability and service life as the amount of water in concrete controls the properties of concrete. In this project various Internal Curing Agents (ICA) like Super Absorbent Polymer (SAP), Poly Ethylene Glycol (PEG) and water-saturated lightweight aggregate (LWA) are used in Self compacting concrete (SCC) to investigate its influence in gaining strength to reach the target strength of M40. All these materials work in similar manner that they act as a reservoir, hold water and desorbs the readily available water throughout concrete to continue the hydration process. In this paper all the three ICAs are added individually in concrete and its influence on strength is studied. SAP performs well compared to all other internal curing materials on workability aspect. The workability properties like Slump flow, L Box and V Funnel tests were conducted and all the test results satisfies the standards of EFNARC Codal provision. The effect of different dosages of ICAs in concrete leads to variation in strength parameters. ICAs in concrete mixes can be successfully used concrete structures.
Experimental study on improving the strength of concrete by using self-curing technic with Poly ethylene glycol and super absorbent polymer
Authors: Anil Podeti , Bhikshma V. 
Published: November 2020

Abstract
Increase in infrastructural projects demands the need for workable concrete in the 21st century. With the technological advancement there is a need for looking into an alternate solution to the current day problems in the construction sector. Shortage of water is also a concern in some of the places which demands for the utilization of a better substitute to water in concrete. Internal curing agents like Polyethylene Glycol (PEG400), ceramic and Super Absorbent Polymer are used extensively which would be beneficial for engineering and construction applications. Day by day increasing of waste from disposable diapers will give increase the waste generation and requires large space dumping. To overcome this diapers which are primarily worn by infants, and by children who are not yet potty trained or who experience bedwetting are used in the present study as a self-curing agent along with PEG 400. In this present study, influence of PEG and diaper polymer on the workability and compressive strength of the concrete was investigated. M40 grade of concrete has been adopted for the entire study. Compressive strength at 3, 7, 28 and 90 days was calculated for 150mm X 150mm X150mm cubes with the 1%PEG as a control mix and 1% PEG + varying ratios of 1% to 10% of diaper polymer with 5% interval. It was observed that workability increased with the addition of diaper polymer and the strength decreased.
Experimental Study on Strength Comparison of Light Weight Aluminium Alloy Propeller Blade with Metal Propeller Blade
Authors: Louis Soundari , Louis Princy Priya 
Published: November 2020

Abstract
Aluminum is the light weight metal used in various applications of Civil construction, Mechanical & Aeronautical machines etc. next to steels. The banana fibres are having various applications like natural absorbent remediation agent, in making paper cards, tea bags, fabric materials and rope. Also the ash of banana leaf sheath having pozzolanic property and used in green concrete. In aluminum matrix composite(AMC) aluminum is the matrix which forms network and other non-metallic material embedded into the matrix(Banana leaf sheath). Stir casting technique is the most promising and economical technique for processing MMC. In this aluminium alloy is made by using banana leaf sheath ash with aluminium 8011, it provides desirable material properties as the Particulate composite offer several advantages like strengthening the material and also provides specific material properties.
Structural behavior of self-curing concrete with partial replacement of coarse aggregates with fly ash pellets
Authors: Venkatesan Vignesh Prabu , Palanisamy Deepak Ottarkarattupalayam , Pandiyan Balaganesh 
Published: November 2020

Abstract
As we are in the world to conserve water for our daily needs, the present technologies have to be optimized in a feasible way, especially to one of the process curing in construction field. Thus, indeed there is an immediate need to do research on water used for curing process on concrete. Curing is one of the significant process for the concrete to have sufficient moisture content particularly at early stages of concreting in order to enhance the property of the concrete. It also plays a major role in concrete by developing pore structure and microstructure thus enhances its performance and durability. By considering these importance’s about curing and also to minimize the water for curing of concrete, a study has been conducted on concrete with the help of Polyethylene Glycol-400 (PEG-400) a water soluble self-curing agent to reduce the usage of water for curing. The present study also emphasis the use of fly ash pellets (FAP) prepared from the waste fly ash as coarse aggregate partially. The trail mix of concrete is proportioned replacing coarse aggregate by 10%, 15%, 20%, 25% and 30% with FAP and the compressive strength of the concrete were determined and found the optimum percentage replacement of coarse aggregate with FAP is at 25% resulting maximum compressive strength. The mechanical properties of concrete using water-soluble Polyethylene Glycol (PEG 400) have been found and also identified the optimum dosage to achieve maximum mechanical properties of the concrete. The increase in water retention capacity in the concrete and reducing the water evaporation in curing process can be done by using self-curing agent and it will absorb the water from the atmosphere thus saves water in the curing process compare to conventional concrete. The concrete mechanical properties containing self-curing agent are studied at various percentage such as 0.5, 0.7, 0.75, 0.8 and 1.0 added by weight of cement and compared with those of conventionally cured concrete. From the investigation it has been concluded that optimum dosage of PEG-400 for maximum mechanical property of M25 grade of concrete containing 25% of fly ash pellets as coarse aggregate is at the percentage of 0.75 by weight of cement.
Partial Replacement of Fine Aggregate by Using Glass Powder
Authors: Natarajan Sathyakumar , Ravichandran Nagavishwanath , Basha Nafeez Ahamed Shathik , Ponnusamy Naveen 
Published: November 2020

AbstractBy increasing commercial buildings, the wastes from industries are being accumulated to larger being extent to disposal on environmental surroundings. From this by product of glass is also one of the by products in their industries, due to this recycling of glass by the replacement of fine aggregate in the construction field. The use of glass powder in the concrete mixer we can reduce the land filling (disposal) on environment regions. By eliminating the fine aggregate can be preserve our soil resources, energy and pollution should be controlled. The use of glass powder due to this replacement method cam be attain greater strength, resistance to chemicals and electrical insulator. These test (Compressive strength, split tensile strength) are achieved to be evaluated.
A Study on using Plastic Coated Aggregate for evaluation of modified Bituminous Concrete Mix
Authors: Singh Gurpreet , Chauhan Rajiv 
Published: November 2020

Abstract
Road network system of India is deteriorating day by day due to rapid increase in traffic and improper maintenance. This paper aims to shed light on the use of plastic coated aggregate (PCA) in bituminous concrete (BC) and analyze PCA’s efficiency using various tests in eco-friendly way to achieve efficiency in economical manner. The major advantage of using PCA to construct pavement in sustainable way is by reduction in usages of bitumen and also improve the properties of aggregate. Dry mix (DM) method was adopted to mixed the waste plastic by utilizing shredded waste plastic bottles made of Polyethylene Terephthalate ( PET) in bituminous mixes. The physical properties of traditional aggregate and PCA were also compared. The Marshall blend was prepared by using bitumen grade 80/100, PCA, stone dust and cement as a filler to make BC Grade -2. The aggregates used for prepared total mix coated with PET content of 3 %, 5%, 7%, 9% and 11% by weight of optimum binder content. To find out its suitability in field, Marshall stability, flow value and volumetric characteristics of mix were determined and compared to traditional bituminous concrete mixtures (without plastic). PCA had better binding property, less water absorption, and higher Marshall Stability value was also shown in the results, and is a better option to solve environment pollution due to plastic waste.
Enhancing Index and Strength Properties of Black Cotton Soil using Combination of Geopolymer and Flyash
Authors: Kilabanur Pramod , Dharek Manish S , Sunagar Prashant , Sreekeshava K S , Thejaswi Poornachandra 
Published: November 2020

Abstract
A Combination of admixtures - fly ash and Geopolymer are used for stabilization of black cotton soil. Black cotton (BC) soils are mainly clayey soils having montmorillonite as their clay mineral. The moisture changes in BC soils will affect compressibility and strength characteristics, which are greatly enhanced with the addition of combination of Flyash (FA) and Geopolymer (GP). The evaluation study includes analysis of soil properties some of index properties like specific gravity, liquid limit, shrinkage limit and Uniaxial compression values. Different percentages of combination of admixtures (percentage by dry weight) are added to natural BC soil and further experiments are performed from these soil mix ratios (MR). The results show that the utilization of combination of admixtures decreases liquid limit by enormously and increases unconfined compressive strength i.e. the strength of the soil.
A Review Paper on Comparative study of Expansive Sub-Grade Stabilization using Industrial Wastes like Foundry Sand, Quarry Dust, Demolition Wastes and Rubber Scrap
Authors: Venkatesh Jeevanantham , Chinnusamy Kavitha , Murugesh Sunil 
Published: November 2020

Abstract
Searching for best stabilizer to overcome the problems in the place of Expansive soils are being a main concern still, not only to achieve the required soil’s engineering properties but also to meet the cost efficiency of the project undergone. The main objective of this paper was to review the materials and methods that have been adopted to stabilize the Expansive soil based on experimental studies. Investigation on various materials such as industrial granite waste, demolition waste and quarry dust and foundry waste sand. The effectiveness of these materials as soil stabilizer is observed with the experimental results only in terms of strength, based on California Bearing Ratio (CBR) tests and shear tests that have been conducted. The Engineering properties of the Expansive soil were increased comparatively and these materials have potential to be used as a soil stabilizer in construction practices and these are also economic.
Modeling and Simulation of SEPIC Converter for Hybrid Energy System
Authors: Arumugam Nandhakumar , Sakthivel Aruna , Devendran Devadarshini 
Published: November 2020

Abstract
Industrialization & urbanization of India leads to increase in the demand for electricity. Due to abundant availability in nature renewable energy sources are considered to be an better option over conventional energy sources. Solar-Wind energy systems combines two of the renewable energy technologies. Because of this the inherent nature of wind and solar power production can be levelled out all throughout the day. This system is used to generate and maximize power from solar and wind energy with MPPT using incremental conductance algorithm and it is given to the DC Motor and also battery is used for storage purpose. Simulation was carried out using MATLAB/Simulink and a prototype model of hardware setup is developed with PIC16F877A controller.
Design of Solid state digester for biogas production from banana wastes
Authors: Divyabharathi Rameshbabu 
Published: November 2020

Abstract
Processing of banana results in a huge amount of waste generation, leaves, stems and peels etc. Indiscriminate disposal of these wastes when decomposed produces noxious gases such as hydrogen sulphide and ammonia, which pose serious environmental hazards. Thus turning them into biomass feedstock offers a better waste management option and also source of energy production. For the past 30 years, there has been only biogas plants which are developed for treating cow dung as feed material. In those plants only other organic wastes are used as feed material. As banana wastes contain high moisture, they can be treated by the way of solid state digestion. The paper describes the design of solid state digester of 1 m3 capacity of biogas production, exclusively for treating banana wastes by the method of solid state anaerobic digestion. The reactor was designed based on the hydraulic retention time and the total solid content of the banana feedstock in order to complete digest and produce biogas at a faster rate with optimum quantity and methane content. The digester was designed for a feed capacity of 30 kg with 30 days retention time with a gas holder volume of 1 m3. The diameter and height of the digester are 1.09 m and 2.1 m and for gas holder the diameter and height are 1.01 m and 0.9 m respectively. The developed digester was found to convert 90% of the solid content in feed to bioenergy.
Assessment of Air Quality Index in major cities of India - Lessons from Lockdown
Authors: Selvi Sugashini Masillamani , Ravikumar Kesavan , Rajendran Arun Dharshini , Bagavathi Anushya Banu , Narayanan Natarajan , Mangottiri Vasudevan 
Published: November 2020

Abstract
An unexpected closure episode of most of the public movement and industrial activities during the initial spreading duration of COVID-19 has significantly resulted in drastic reduction of environmental pollution in the urban areas globally. Being an active bio-aerosol with pandemic effect, COVID-19 presents a never-before scenario for the meteorologists and environmental engineers to look for systematic analysis of the overlap of air quality modelling with modifications in the atmospheric science. The long-term monitoring of pollution records help in defining unique indices for categorizing the severity of the existing pollution and thus helps in developing strategies for improving environmental quality. In this study, we present the observations in major air quality parameters in selected major cities of India using air quality index (AQI) before and after the announcement of a nationwide lockdown that extended nearly for many months. The results indicate a major sustaining type of decline in the average AQI values for major Type-1 and Type-2 cities due to the reduction in public movement and industrial activities, whereas the reduction AQI values for Type-3 and Type-4 cities were observed to be fluctuating due to the continued small-scale industrial activities and low level of awareness about ban on public gathering programmes.
Rational suitability of low cost activated carbon in removing hexavalent chromium ions from wastewater by uninterrupted mode of adsorption
Authors: Sivarethinamohan Sujatha , Rajamanickam Sivarethinamohan , Baskaran Anuradha , Ramakrishnan Devananth 
Published: November 2020

Abstract
Heavy metals such as chromium, lead, arsenic and others are dense metals whose contamination of water may exterminate life on earth at the niche in industrial activities, foodstuffs or medicines and so on. Activated carbons are very helpful in removing heavy metal ions from aqueous solutions by adsorption, and have been investigated by many researchers so far. The practical relevance of activated carbon made from de oiled soya in the removal of hexavalent chromium ions through continuous adsorption mode is reported in this paper. A breakthrough plot was plotted in finding the effect of initial concentration and adsorbent bed height in the adsorption of hexavalent chromium through activated carbon of de oiled soya. The breakthrough time and saturation time increased as the concentration of the initial solution shot up from 40 mg/L to 60 mg/L. The saturation time was in an incremental mode when the thickness of the adsorbent bed height in a fixed bed was increased from 5cm to 7cm for 40 mg/L initial concentration of hexavalent chromium. The Adams-Bohart’s model was found to fit perfectly the fixed bed column in the removal of hexavalent chromium from aqueous solutions. The fabricated adsorbent worked well in detoxifying hexavalent chromium metal ion contaminated wastewater.
Precipitation of struvite by sustainable waste materials and use as slow release fertilizer – A circular economy approach
Authors: Ramprasad Chandrasekaran , Alekhya Dodapalli , Bhishmitha Challa , Deepika Chow Sai 
Published: November 2020

Abstract
The increased concern on the quantity of wastewater generation subsequent degradation in the quality of surface water sources, especially through eutrophication has urged many researchers to find sustainable ways to recover the nutrients and reuse as a natural fertilizer. Precipitation and simultaneous removal of struvite, otherwise called as magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O), from the wastewater using natural coagulants will be a better alternative. In the present study, the wastewater rich in ammonia was treated using sustainable modus operandi and nutrient-rich struvite was recovered. The objective of the research was to (i) optimize the quantity and struvite precipitation rate and study the effect of pH and (ii) germinate the seed (cereals) with optimal struvite dosage. Initially, the wastewater obtained from the hostel was characterized and subsequently coagulated using natural coagulants like pumpkin seeds and fish bones to precipitate the struvite. The raw wastewater found to have a pH of 6.64±0.32, the turbidity 304±28 NTU, ammoniacal nitrogen 32±3.9 mg/L, total solids 2240±72 mg/L and total alkalinity as 950±25 mg/L. The struvite with varied dosages in the order of 0.25 to 1.5 grams per 500 grams of soil was used for seed germination. At an optimal dosage of 0.5 grams per 500 grams of soil showed an effective plant growth and increased yield. Additionally, the wastewater after recovering struvite can be treated with a reed-bed system providing a circular economical solution for the modern agriculture industry.
Purification of Contaminated Water Using Eco Enzyme
Authors: Janarthanan Madhumitha , Mani Kalaiyarasi , Raja Sakthiya Ram Shankar 
Published: November 2020

Abstract
Eco Enzyme is an unpredictable arrangement formed by the fermentation of new kitchen squander, brown sugar and water. Utilization of Garbage Enzyme is developing as a viable strategy for treating contaminated water. The arrangement can be used after three months to purify the contaminated water. A message will be sent with the help of IoT once the solution is ready. Two different combinations of vegetable squanders are used and tested in the contaminated water. One solution gives better result when compared with the other solution. IoT is used to send message to the registered mobile once the solution reached required pH value. Furthermore improvements like sending message based on the application of the solution can be added in future.
Comparative study of the stability of edible oil by the utilization of various natural antioxidants
Authors: Balan Veeramalini Jaya , Ganesan Baskar , Baskaran Thomas Edison 
Published: November 2020

Abstract
The Present Investigation is to compare the effects of various natural antioxidants like Vitus vinifera species and Tamarindus indica species and also to evaluate its chemical characterization of pertinent properties in two varied edible oil. Vitus vinifera species and Tamarindus indica species and whose antioxidant activity measured by Totox assay (Total Oxidation Value) and DPPH scavenging assays. The quantitative amount results showed were 0.4% w/w Tamarindus indica species and 0.5% w/w of Vitus vinifera species were able to inhibit lipid oxidation throughout storage (p < 0.04). Quantitative results of the Vitus vinifera species with 0.25% (w/w) of Refined oil (RO) showed a good synergic effect, displayed radical scavenging activity and better antioxidant activity and acts as a better food ingredient for the healthier food commodities.
Seismic Performance Analysis of Irregular Structures under Combined Action of Base Isolation and Energy Dissipation Braces
Authors: Wang Ying , Pan Futing , Yang Tan , Dai Chunjiao 
Published: November 2020

Abstract
Irregular structures are prone to torsional vibration under earthquake action, which aggravates the damage of structures. With the development of energy dissipation technology, LRB and BRB are applied to an irregular steel frame. By comparing and analyzing the seismic response characteristics and laws of the original structure, BRB structure, LRB structure and LRB + BRB structure, the seismic performance and advantages and disadvantages of each control scheme are obtained, especially the influence on torsion effect, which provides technical reference for the practical application of such projects.