bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of safety performance level on simple urban residential building: Case study at Bogor city Indonesia
Authors: Lutfi M , Arien H , Hendrawati M , Ramadhansyah P J , Ramli N I 
Published: January 2020

Abstract
Simple urban residential building must meet the technical requirements set forth in the building and structure law number 28 of 2002. In the city of Bogor, especially in the densely populated village of Kayumanis, there are areas that have the potential of landslides. In that area, there are some houses that have been damaged by the movement of land and landslides that can threaten the safety of its inhabitants. Therefore they need to stay aware about potential collapse of several parts of house structures, and then understand how to evacuate to safer area, outside of the house after the incident was stopped. Based on these conditions, it is necessary to evaluate buildings in accordance with FEMA on the safety level of buildings. The structure and modeling analysis using SAP 2000-V10 and Indonesia Standard. Specification of simple urban residential building using the reinforced concrete material with the quality of concrete (fc’) 17 MPa, 15x15 cm column dimension, 15x18 cm beam dimension and 4D12 BJTP main reinforcement, and shear reinforcement D8-20. The results of the analysis of urban residential building structures shown in 3D form, obtained values for column structure elements almost close to failure are marked with orange color, while for the element of the beam structure is declared safe marked with green color. From result of modeling analysis referring to FEMA 356 obtained value C0 = 1.0; C1 = 1.378; C2 = 1.0; C3 = 1.0; Sa = 1.011; and Te = 0.2206, which states the value of the displacement target is 0.02 m which is categorized to be at ‘The Life Safety’ (LS) performance level. This means that if there is a movement of land, the structure of the house is declared stable and has adequate service capacity and damage non-structural part is still controlled.
Numerical Modelling of Scale Effect on Mode of Failure and Strength of Offset Rock Joints
Authors: Mughieda O , Alkhedher M , Hazirbaba K 
Published: January 2020

Abstract
The studies on the scale effect on the behavior of non-persistent rock joints are limited and the nature of scale dependency is still not well understood. In this study, the scale effect on failure mechanisms and compressive strength of rock blocks tested previously by the authors was investigated numerically. In the experimental study; two different block sizes, having dimensions of (63.5 x 28 x 20.3) cm and (30.5 x 15.24 x 10) cm, were tested. Samples of rock with non-persistent offset joints were subjected to uniaxial loading. The joint inclination angle was maintained at 22.5° in both cases. Also, degree of persistence was kept constant at 0.3 for all tested blocks. However, the offset angle which connects the inner tips of the joints was changed from 30°-90° with an increment of 15°. In the current study, finite element analyses were performed on the arrangements that were studied experimentally. ANSYS 19 Mechanical APDL was utilized to perform static structural analysis. A linear elastic material was assumed for these analyses, mainly because there were no signs of major material damage prior to fracture. Modulus of elasticity of approximately 10510 MPa and a Poisson’s ratio of 0.25 were assumed. The boundary conditions applied to the finite element model were zero vertical displacement along the bottom edge, and a uniform distribution load on the top surface, the magnitude of which was approximately the measured coalescence load (in MPa) for the joint geometry analyzed. The stress distribution within the block and near the tips of joints in particular was analyzed in terms of maximum principal stresses, shear stresses and factor of safety resulted from maximum tensile stress theory. The FEM results were compared with the experimental results. The results of FEM emphasized the observed experimentally results regarding the decrease in strength as the size of block sample increased and no effect of block size on mode of failure.
Volumetric Properties and Resilient Modulus of Stone Mastic Asphalt incorporating Cellulose Fiber
Authors: Fauzi N A N Md , Masri K A , Ramadhansyah P J , Samsudin M S , Ismail A , Arshad A K , Shaffie E , Norhidayah A H , Hainin M R 
Published: January 2020

Abstract
Stone mastic asphalt (SMA) is well known as a high coarse aggregate content that interlocks to form a stone skeleton that resist permanent deformation. However, it facing a lot of problems such as rutting and stripping because of the high temperature and repeated axial load. It also suffers with creep issue. The cellulose fiber is a type of synthetic fiber that can enhance the properties of asphalt mixture. Thus, the aim of this study is to utilize the cellulose fiber that has high tensile strength to overcome the problem of SMA. Among the tests involve are Resilient Modulus, Marshall Stability and Cantabro Loss. From the results, it shows that the addition of cellulose fiber improved the recovery ability of asphalt binder. From each test, the addition of 0.2% cellulose fiber contributes to lowest value of abrasion, while 0.3% producing highest value of resilient modulus. Thus, the addition of cellulose fiber is capable in enhancing the properties of SMA.
Effect of Unground Palm Oil Fuel Ash as Partial Sand Replacement on Compressive Strength of Oil Palm Shell Lightweight Concrete
Authors: Wan Ahmad S , Muthusamy K , Hashim M H , Albshir Budiea A M , Ariffin N F 
Published: January 2020

Abstract
Concern towards degradation of environment due to increasing use of natural sand in construction industry and dumping of solid wastes from palm oil industry namely palm oil fuel ash and oil palm shell has lead towards the development of environmental friendly concrete. The present study investigates the effect of unground palm oil fuel ash as partial sand replacement towards workability and compressive strength of oil palm shell lightweight aggregate concrete. Two types of mixes were used. Control specimen was prepared using 100% natural sand. Another type of mix were prepared by integrating 5%, 10% and 15% unground palm oil fuel ash by weight of sand. The concrete mixes workability were investigated by conducting slump test in accordance to standard. All specimens were made in form of cubes (150mm x150mm) and water cured up to 28 days. The compressive strength test was carried out in accordance to BS EN12390: 3 at 1, 4, 7 and 28 days. The finding shows that integration of 10% unground palm oil fuel ash contributes to the enhancement of oil palm shell lightweight aggregate concrete properties. Success in using unground POFA as partial sand replacement in concrete production would reduce quantity of ash disposed as waste and save the consumption of natural river sand.
Rock mass classification for rock slope stability assessment in Malaysia: a review
Authors: Salmanfarsi A F , Awang H , Ali M I 
Published: January 2020

Abstract
Rock mass classification systems are commonly used in the design and construction of rock engineering, and have seen widespread modifications and validations by various researchers over the last few decades. The rock mass classification, in particular the slope mass rating (SMR), continues to be the preferred preliminary method in small-scale assessment of rock slope stability. In Malaysia, parameters related to rock slope stability assessment have been modified to consider the condition of the rock mass such as the effect of heterogeneous rock units and weathering of rocks. The application of rock mass classifications however have been shown to contain some discrepancies, and the acknowledgement of the limitations of the system is important for an optimum use in the design stage. This paper reviews several development of rock mass classifications in Malaysia, as well as looking at potential direction of further development of the rock mass classification system in the context of local slope stability analysis.
Preparation of Sintered Glass-Ceramic from CRT Glass and Red Gypsum Wastes for Tiling Application
Authors: Idham M M , Haniza M M 
Published: January 2020

Abstract
This study aims to prepare sintered glass-ceramic (SGC) from a combination of cathode ray tube glass and red gypsum wastes specifically for tiling application. Bentonite clay which acted as a binder was also added to the prepared formulation. The starting materials were milled individually, mixed and compacted into button shape by using a uniaxial hydraulic press machine. The effects of sintering temperature and red gypsum content on the physical- mechanical properties and crystallization behaviour were investigated. The test results revealed that the glass-ceramic sintered at 850°C with 20 wt.% of red gypsum gave the best combination of physical-mechanical properties. Modulus of rupture and linear shrinkage were measured at 33.75 MPa and 6.47 %, respectively. Water absorption was low enough and recorded at 0.4759 % while the density was measured at 2.6638 g/cm3. The results also discovered that increasing red gypsum content by 10 wt.% and sintered at similar temperature deteriorated the quality of the glass-ceramic. Therefore, this particular sintered glass-ceramic has the potential to be used as outdoor walkway tile or brick owing to the high physical-mechanical properties, colour suitability as well as low production cost.
Properties and Flexural Behavior of Self-Compacting Concrete with Added Coir Fiber And POFA
Authors: Iman Afif , Mohamad N , Raain Fasya , Sofia Anis , Mydin Azree , Samad A A A 
Published: January 2020

Abstract
This paper presents the mechanical properties and flexural behavior of self-compacting concrete (SCC) with addition of 0.2%, 0.4% and 0.6% coir fiber (CF) as filler, and 10% palm oil fuel ash (POFA) as partial cement replacement. Fresh SCC-POFA-CF mixture was tested under slump flow and J-ring tests to determine its workability. SCC-POFA-CF cubes and cylinders were tested under compressive and tensile tests to determine its compressive strength, tensile strength, and flexural strength, while prisms were tested under four point bending load to determine its flexural behavior. It is found that workability of SCC-POFA-CF decreased when CF increased. The optimum percentage of CF in SCC mixture was found to be 0.4%. SCC-POFA-CF experienced less crack compared to the control specimen. This shows that CF in SCC prisms managed to control the crack propagation.
Study on The Effects of Plastic as Admixture on The Mechanical Properties of Cement-Sand Bricks
Authors: Fai Chow Ming , Khalili Rosidan Muhammad Amin 
Published: January 2020

Abstract
Cement-sand bricks is one of the building materials that being used as alternative for a low-cost house in Malaysia. Nowadays, many researchers have been researching for green and sustainable materials to replace conventional building materials. In this paper, plastic bottle has been studied as a new alternative admixture in cement-sand brick production. The objective of this research is to determine the effect of plastic size on mechanical properties of cement-sand bricks. The lab testing used for this research are compressive strength and water absorption tests. Based on the findings, the bigger size of plastic added into the brick mixture, the higher compressive strength can be achieved. This is due to the plastic can increase the structural integrity of the cement-sand brick. Also, the bigger size of plastic added into the mixture, lower rate of water absorption was obtained. This may be due to plastic help in reducing the volume of void of the cement-sand brick. Further studies are needed to improve the cement-sand brick production with plastic as admixture material.
Finite Element Analysis of Coated (Intumescent Coating Protection) Cellular Steel Beam (CSB) Expose to Fire
Authors: Zakwan F A A , Krishnamoorthy R R , Ibrahim A , Ismail R 
Published: January 2020

Abstract
Traditionally, standard composite steel beam section acts as a load bearing structural element to sustain an external load. However, in the event of fire, an additional fire load acts on the composite steel beam section. The combined action of the former and latter would accelerate the vertical deformation of the beam. In the case of cellular steel beam (CSB), the vertical deformation predicted to be higher. Due to these circumstances, the structural behaviour of the composite CSB were compromised leading to the critical failure mode of web-post buckling and Vierendeel bending failure. Therefore, it is crucial to evaluate the behaviour of the composite CSB at elevated temperature under both loading action. In this research work, validation process was initiated between the numerical simulation analysis of CSB exposed to the fire with the readily available experimental data work. The validated model was then used to simulate the composite CSB with newly added fire protection material of intumescent coating. From the finite element simulation, the predicted vertical deformation slightly decreased for thicker intumescent coating application onto the beam surface. In conclusion, by applying the intumescent coating, further improvements were predicted for the vertical deformation and subsequently maintains the strength of the composite CSB at elevated temperature.
Factors Affecting Safety Performance of Construction Projects: A Literature Review
Authors: Abas N H , Yusuf N , Suhaini N A , Kariya N , Mohammad H , Hasmori M F 
Published: January 2020

Abstract
The construction industry is known as the most hazardous industry and has always been plagued with accident for a long time. Incidents or accidents that happened at construction sites has caused several drawbacks of project performance, such as delay in project completion, increase project cost, reduce productivity and create negative impressions to the organization. Therefore, it is crucial for employer to ensure safety and health at the workplace is taken care of to avoid accident. This paper presents the review of the factors affecting safety performance of construction project, focusing on project level. Among the most frequently cited factors that affect safety performance of construction project in project level are safety training, implementation of safe working environment and implementation of safe plant and equipment. The outcomes of the paper may serve as a starting point for further research in investigating the main.
Improvement for significant clauses in the standard form of contract for industrialized building system construction
Authors: Mohd Fateh Mohd Ashraf , Zakariah Hanah , Ema Ezanee Shaiifa 
Published: January 2020

Abstract
Industrialized Building System (IBS) has been introduced in Malaysia since the 1960s. The government has come out with varies strategic blueprint to push IBS as a national agenda. Unfortunately, the pace of adaptation of IBS is still slow and below the government’s target. Construction players are still facing various issues when adopting IBS particularly on contractual and procurement aspects; thus it contributes to the low adoption of IBS in Malaysia. Lack of provision in the Malaysia standard form of contract is one of the issues. There are six (6) significant clauses in the Malaysia standard form of contract that can be improved to make it more conducive to IBS construction approach. Therefore this research will attempt to investigate the factors of improvement for the six (6) significant clauses in the standard form of contract with IBS construction. A semi-structured interview was used in the data collection exercise. The study revealed that there are eleven (11) factors of improvement for the six (6) significant clauses in the standard form of contract with IBS construction approach. The findings will be useful in order to enhance the local standard form of contract to suit the IBS construction approach hence able to accelerate the adoption of IBS construction in Malaysia.
The on-site waste minimization practices for construction waste
Authors: Fikri Hasmori Muhammad , Faizul Md Zin Ahmad , Nagapan Sasitharan , Deraman Rafikullah , Abas Norhaslinda , Yunus Riduan , Klufallah Mustafa 
Published: January 2020

Abstract
Rapid development in construction industry had caused the increasing of construction waste. This situation brings many negative impacts towards the environment, cost, productivity, time, social and economy. The increasing of construction wastes is mainly due to the inefficient waste management practices in the construction projects. Hence, the effective management practices in handling construction waste should be highlighted. This study seeks to identify the waste management practices that are able to engender on-site waste minimization. As much as 54 practices had been found from previous research publications. Mapping technique was used to determine the frequency for each practice. This study have found five (5) significant management practices that need to be emphasized in order to achieve on-site waste minimization. The findings of this paper will help researchers to further investigate the significant management practices in minimizing on-site construction waste.
Traffic Noise Assessment among Residential Environment in Batu Pahat, Johore, Malaysia
Authors: Segaran V C , Tong Y G , Abas N H , David Daniel B , Nagapan S , Kelundapyan R 
Published: January 2020

Abstract
Noise pollution arises as a severe problem to the community and ground transportation has highly impacted noise environment of the neighbourhood. In the present study, six stations were selected from three different locations in order to assess the traffic noise impact among residential area along Jalan Kluang, Batu Pahat. The objectives of this study focused on two main stages: (1) determination of noise indices; and (2) assessment of traffic noise impact. The noise indices such as equivalent continuous noise level (LAeq), noise level exceeded 10% (L10), 90% (L90) and the maximum noise level (LAFmax) of peak hours measurement time were determined using sound level meter (SLM) at all six stations. Besides, traffic noise index (TNI) and noise pollution level (LNP) were calculated based on the measured noise indices to expose the traffic noise impact. Overall, the result of the present study showed that residential area faces traffic noise disturbance partially whereby 50% of the stations exceeded the DOE standard which was 55dBA. Nevertheless, the residents living nearby Jalan Kluang are commonly facing traffic noise nuisance, but stations located further inside residential areas tend to have more residential background noises apart from traffic influence.
The Modified Evolutionary Algorithm for the Algorithms’ Chain Formation that Improve Gradient Images
Authors: Belov V V , Lopatin A K 
Published: January 2020

Abstract
The problem of improvement of images, in implementation process of automatic control of the geometrical sizes of the products which are on the conveyer belt is considered. The purpose of work is development of the method of automatic structural and parametrical identification of the combination of algorithms for the solution of the problem of preprocessing of images. Serve as input parameters of the system: the image of the controlled product in the RGB format and the image standard in the bitmap. The algorithm of correction of defects of the image and the subsequent selection of edges is offered adapting to shooting conditions (camera type, its permission and surface illumination). On the output the vector of operators and their parameters forms.
Recurrent Neural Networks’ Configurations in the Predictive Maintenance Problems
Authors: Demidova L A 
Published: January 2020

AbstractThe possibilities of various configurations of the recurrent neural networks in solving the problems of the maintenance performance based on the multidimensional time series have been investigated. The typical examples of the maintenance performance’ problems from technical and medical diagnostics have been considered. The configurations’ examples of the one- and two-layer recurrent neural networks with the RNN, LSTM, and GRU neurons for the aircraft engine maintenance problems have been given, the graphical dependencies of the development’ results of the neural network models, the estimates of the development time, and the estimates of the accuracy indicator have been presented. The conclusions about the advantages of the recurrent neural networks with the LSTM and GRU neurons have been made.
Comparative Study of Pontryagin Maximum Principle and Direct Method in Aircraft Optimal Control Design
Authors: Korsun O N , Stulovskii A V , Gulevich S P 
Published: January 2020

Abstract
This paper deals with the problem of open-loop control design for a dynamic object which is described by a nonlinear system of differential equations. To solve this problem a direct method is used, in which the target functional is minimized by population-based algorithm. The method is applied to a test problem which consists of finding optimal control for spacial motion of maneuverable aircraft. Proposed technique is compared with two classical solutions to considered problem. One of them is based on equating to zero the partial control derivatives of the Hamilton function, wherease the other on the Hamilton function maximum over controls (Pontryagin maximum principle). The paper confirms high degree of similarity between solutions obtained by all considered methods of selecting target functional. However, classical algotithms show slightly worse accuracy and higher sensitivity to the quality of initial approximation. In addition, proposed direct method permits to evade the necessity to solve a two–point boundary value problem required in classical algorithms.
Comparison of Economic and Transport Capabilities of Heavy C-type Airfield-Based WIG [Wing-in-Ground-Effect] Craft Versus Passenger Aircraft
Authors: Luchkov A N 
Published: January 2020

Abstract
This article assesses the potential increase in the transport and economic characteristics of heavy cargo and passenger aircraft, if they are processed into WIG craft. This type of air transport is of interest from the point of view of improvement of characteristics from the position of mass use on the airways that pass mainly over the water surface of seas and oceans, as 75% of international air transport is accounted for by these airways. Classic amphibious WIG crafts are known to have extremely low performance due to their high aerodynamic resistance, high structural weight and increased fuel consumption in take-off/landing modes. The solution to this problem may be to switch to airfield take-off WIG crafts. As part of the work, boundary conditions for the study were developed, and a set of formulas was developed to allow for a recalculation of fuel and payload redistribution depending on the operating conditions. The results include changes in gross weight, transport and fuel efficiency, as well as potential changes in aircraft operating costs.
Model-Based Optimization in Induction Heating of Thin-Wall Shells
Authors: Rogachev N G , Rogachev G N 
Published: January 2020

Abstract
A mathematical model of induction heating process of paramagnetic thin-wall shells was considered. Electromagnetic processes in the system “inductor heated shell-temperature equalization devices” are modelled by the method of coupled circuits, thermal processes — by the differential-difference method. The model is implemented in MATLAB and is used to optimize the heating process based on partial criteria that are formulated in fuzzy form.