Article
Green & Sustainable Science & Technology
Memduh Karalar, Yasin Onuralp Ozkilic, Ahmed Farouk Deifalla, Ceyhun Aksoylu, Musa Hakan Arslan, Mahmood Ahmad, Mohanad Muayad Sabri Sabri
Summary: This study clearly detected the impacts of different proportions of tension reinforcement and waste lathe scraps on the failure and bending behavior of reinforced concrete beams through empirical tests. The results showed that the addition of waste lathe scraps improved the mechanical features of the beams, but decreased the consistency of the concrete.
Article
Green & Sustainable Science & Technology
Cherdsak Suksiripattanapong, Taweerat Phetprapai, Witawat Singsang, Chayakrit Phetchuay, Jaksada Thumrongvut, Wisitsak Tabyang
Summary: This paper investigates the use of plastic waste, specifically polypropylene, to enhance the properties of fiber reinforced concrete. The study found that the addition of plastic fibers improved the compressive and flexural strength as well as the toughness of the concrete. This research contributes to reducing environmental problems by utilizing plastic waste in an eco-friendly construction material.
Article
Construction & Building Technology
Maria Idrees, Farhan Saeed, Zia Farooq, Fuat Koksal, Jinyan Shi
Summary: Efficient management of waste materials is crucial for a cleaner environment. This study demonstrates that incorporating discarded carpet threads and silica fume into concrete significantly increases its tensile and flexural strengths, as well as other durability characteristics. This approach not only improves concrete properties but also helps conserve resources, promote sustainability, recycling, and a circular economy.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Hong Yuan, X. H. Fu, Y. C. Fan, Bing Fu, Q. Q. Zouc
Summary: This study explores a method of recycling waste glass fiber-reinforced polymer into macro fibers to reinforce concrete. The results show that macro fibers effectively enhance the tensile performance of concrete and the use of layered beams further improves the utilization and added values of the fibers.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Fuat Korkut, Memduh Karalar
Summary: This study evaluated the fracture and bending performance of reinforced concrete beams (R-C-Bs) with different proportions of plastic waste as fine aggregate through experimental and numerical examination. The results showed that a 30% proportion of plastic waste offered the best displacement capability. Additionally, 3D finite element models of the R-C-Bs created using ANSYS v.19 software closely matched the experimental data in terms of bending and rupture performances.
Article
Construction & Building Technology
Xian Liu, Qihao Sun, Wei Song, Yihai Bao
Summary: Fiber-reinforced-concrete has been widely used in underground structures, especially in tunnel linings. This study investigates the differences and performances between synthetic fiber reinforced concrete and traditional reinforced concrete lining structures through experiments and comparisons.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Construction & Building Technology
Adil R. Al-Alawi, M. A. Mashrei
Summary: This research investigates the use of macro-synthetic fibers as a sustainable alternative to traditional shear reinforcement in the development of sustainable ultra-high-performance concrete beams. The results show that the combination of macro-synthetic fibers and steel fibers can reduce the weight of steel fibers while maintaining excellent shear capacity, contributing to sustainable construction practices.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Yishuo Huang, Ming -Gin Lee, Yu-Cheng Kan, Wei -Chien Wang, Yung-Chih Wang, Wei -Bang Pan
Summary: This study explores the retrofitting of reinforced concrete beams with ultra-high-performance concrete (UHPC) or carbon fiber-reinforced polymer (CFRP). The results show that UHPC increases the ultimate load of the beams by 35% and their displacement by 26.8 mm, making it a better choice in terms of toughness and economic benefits.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Civil
Aaron Nzambi, Denio Oliveira
Summary: This paper presents an experimental study on shear problems in steel fiber reinforced concrete beams without shear reinforcement. The specific groove in the shear span is used to locate diagonal cracks and control the critical crack inclination at 30 degrees. The results show that the proposed model is accurate in predicting shear strength, with a coefficient of variability of 4-8%.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Duy-Liem Nguyen, Duc-Kien Thai, H. T. Tai Nguyen, Thac-Quang Nguyen, Kien Le-Trung
Summary: This investigation focuses on the moment resistance of composite beams with high-performance synergized fiber-reinforced concrete (HPFRC) by performing analytical and experimental works. The addition of steel fibers in HPFRC generates synergy in direct tension, enhancing the moment capacity of the beams. The analytical model proposed in this study can effectively estimate the moment resistance of composite beams with HPFRC.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Khaldoun N. Rahal, Khalad Elsayed
Summary: The study investigated the shear behavior of concrete beams containing recycled coarse aggregates (RCA), finding that the use of RCA did not change the mode of failure or directly affect critical diagonal failure cracks. The recycled aggregate concrete (RAC) beams had higher normalized shear strength compared to natural aggregates concrete (NAC) beams, with a limited difference in strength amongst the various percentages of replacement (PR). Calculated strengths based on various codes were found to be conservative for the RAC beams.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Construction & Building Technology
Jawad Ahmad, Zhiguang Zhou
Summary: This study discusses various techniques to enhance the properties of natural fibers used in concrete and shows that incorporating fibers with synthetic fibers prioritized can promote environmentally friendly and long-term solutions in the construction industry. The study recommends using 1.0% fiber to improve the tensile capacity of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Bogachan Basaran, Ceyhun Aksoylu, Yasin Onuralp Ozkilic, Memduh Karalar, Ahmad Hakamy
Summary: The usability of waste marble dust (WMD) in different proportions was investigated for the purpose of eliminating environmental problems in reinforced concrete beams (RCBs). The results showed that the addition of WMD additives negatively affected the bearing capacity of the beams. The design regulations of ACI 318 (2019) and EC2 (2004) performed well in estimating shear strength in RCBs with stirrup spacing of 200 mm and 160 mm.
Article
Construction & Building Technology
Weiwen Li, Shiying Tang, Xinlin Huang, Wei Liu, Xu Yang, Tiansheng Shi
Summary: Steel corrosion poses a significant threat to the durability of traditional reinforced concrete (RC) members. This study investigates the shear behavior of concrete beams reinforced with carbon fiber-reinforced polymer mesh fabric (CFRP-MF) as shear reinforcement. The experimental results show that the novel composite beams exhibit similar shear capacities and ductilities to traditional concrete beams with steel stirrups.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Mingke Deng, Min Zhang, Fudong Ma, Fangyuan Li, Hongzhe Sun
Summary: This study investigated the effectiveness of highly ductile fiber-reinforced concrete (HDC) in improving the failure mode and ductility of over-reinforced concrete beams. The experimental results showed that applying HDC to strengthen the compression zone of over-reinforced concrete beams was highly effective in changing the brittle failure mode and increasing the deformation capacity. Increasing the thickness of the strengthening layer and ensuring coordination with the existing beam can further enhance the deformation capacity.
ENGINEERING STRUCTURES
(2021)
Review
Engineering, Civil
Abdullah Faisal Alshalif, J. M. Irwan, N. Othman, A. A. Al-Gheethi, S. Shamsudin
Summary: The paper reviewed the current perspectives on the development of carbon dioxide sequestration through its conversion into calcite. Geological sequestration is expensive and slow, while bio-sequestration is faster and more cost-effective. Algae have been investigated for atmospheric CO2 bio-sequestration but cannot be used in bio-concrete. Bacteria, on the other hand, show potential in bio-aerated concrete bricks (B-ACB) for effectively capturing and storing CO2, making them a future strategy to reduce CO2 pollution.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2022)
Article
Chemistry, Physical
Sajjad Ali Mangi, Mohd Haziman Wan Ibrahim, Norwati Jamaluddin, Shabir Hussain Khahro, Shahiron Shahidan
Summary: The study aims to develop an empirical equation for predicting the compressive strength of coal bottom ash concrete exposed to aggressive environments, in order to enhance the safety and quality control of concrete structures.
Article
Environmental Sciences
Ali Tighnavard Balasbaneh, David Yeoh, Mohd Irwan Juki, Mohd Haziman Wan Ibrahim, Ahmad Razin Zainal Abidin
Summary: This study assessed the sustainability of different earth-retaining walls, finding that the Gabion Wall was the most environmentally friendly option, while the Cantilever Concrete Wall was the most cost-effective choice.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Ali Tighnavard Balasbaneh, David Yeoh, Mohd Irwan Juki, Adel Gohari, Ahmad Razin Zainal Abidin, Abdul Kadir Bin Marsono
Summary: This study evaluates the sustainability performance of different flooring systems using a multi-criteria method. The results show that wood flooring has the lowest environmental impact, concrete flooring has the lowest cost, and laminate flooring has the least negative social impact. The most sustainable flooring system proposed is wood flooring, taking into consideration all the criteria.
INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT
(2021)
Article
Chemistry, Physical
Beng Wei Chong, Rokiah Othman, Ramadhansyah Putra Jaya, Doh Shu Ing, Xiaofeng Li, Mohd Haziman Wan Ibrahim, Mohd Mustafa Al Bakri Abdullah, Andrei Victor Sandu, Bartosz Ploszaj, Janusz Szmidla, Tomasz Stachowiak
Summary: A simplified image analysis technique for evaluating mortar quality with only a digital camera has been developed, showing that mortar specimens with 20% PSBE achieve the highest compressive strength and lowest porosity. Strong correlations were found between all experimental data and the compressive strength, indicating the feasibility of the developed technique as supplementary mortar properties for the study of mortar with pozzolanic material.
Article
Environmental Sciences
Sajjad Ali Mangi, Mohd Haziman Wan Ibrahim, Norwati Jamaluddin, Mohd Fadzil Arshad, Shabir Hussain Khahro, Ramadhansyah Putra Jaya
Summary: The study found that concrete containing 10% coal bottom ash showed higher compressive strength, lower chloride penetration, and decreased drying shrinkage compared to normal concrete, indicating its potential as an optimal material for future research.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Rokiah Othman, Beng Wei Chong, Ramadhansyah Putra Jaya, Mohd Rosli Mohd Hasan, Mohd Mustafa Al Bakri Abdullah, Mohd Haziman Wan Ibrahim
Summary: This study evaluated the rheological and mechanical properties of concrete incorporating eggshell and waste tire rubber, with results showing that the mechanical strength of concrete was optimal at 5% and 10% eggshell replacement, but excessive tire replacement beyond 10% compromised the structural integrity of the concrete.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Paper & Wood
Ahmed Mohamed, Hexin Zhang, Yu Deng, Martin Lehmann, Christophe Sigrist, Kal Uheida, Yu Zheng, Ali Bahadori-Jahromi, Shahiron Shahidan, Remi Caudoux
Summary: The mounting system of LVDT has a significant impact on mechanical property tests of timber materials. It should be carefully designed and validated before the actual test. The displacement distribution is not uniform across the timber sample, which should be considered when selecting mounting points for LVDTs.
WOOD MATERIAL SCIENCE & ENGINEERING
(2022)
Article
Environmental Sciences
Hassan Amer Algaifi, Shahiron Shahidan, Sharifah Salwa Mohd Zuki, Mohd Haziman Wan Ibrahim, Ghasan Fahim Huseien, Mustaqqim Abd Rahim
Summary: The study evaluated and optimized the use of coconut shell as a replacement for fine aggregate in concrete. Experimental tests and modeling led to the determination of the optimum content of 50% replacement, with improved mechanical properties of the concrete observed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Ibrahim Mohammed Nasser, Mohd Haziman Wan Ibrahim, Sharifah Salwa Mohd Zuki, Hassan Amer Algaifi, Abdullah Faisal Alshalif
Summary: Exposing concrete to high temperatures can lead to detrimental effects on its properties, but these can be mitigated by using waste materials and incorporating nanosilica. This study evaluates the effects of nanosilica on concrete properties under elevated temperatures and provides an overview of the impact of elevated temperature on concrete containing waste materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Multidisciplinary
Muhamad Hasif Hussin, Mord Haziman Wan Ibrahim, Nor Hazurina Othman, Mohammed Yahya Mohammed Al-Fasih, Mohd Fadzil Arshad
Summary: A study on the crystallography of lime from mussel shell shows that it contains aragonitic and calcitic crystal types, which have higher density than normal concrete and can reduce carbonation penetration.
IIUM ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Syafiqa Ayob, Wahid Ali Hamood Altowayti, Norzila Othman, Faisal Sheikh Khalid, Shafinaz Shahir, Husnul Azan Tajarudin, Ammar Mohammed Ali Alqadasi
Summary: In this study, the feasibility of using oil palm petioles as a raw material for activated carbon production was investigated. Activated carbon with high porosity was generated by chemically treating the char in nitric acid and potassium hydroxide. The optimal carbonization temperature was found to be 480 degrees C, as shown by pore analysis and surface functional group characterization. The prepared activated carbon exhibited a significantly higher surface area compared to the raw material. Furthermore, the study revealed that pH, time, and dose had a substantial impact on the removal of zinc, iron, and manganese from wastewater, making the modified activated carbon a promising adsorbent for heavy metal removal.
Article
Materials Science, Multidisciplinary
F. S. Khalid, M. Y. A. Aminuddin, A. N. Abdullah Al-Jaberi, Z. Zaki, J. M. Irwan, S. Ayob, Bassam A. Tayeh
Summary: This study aims to establish the sustainable properties for sand cement bricks using Recycled Concrete Aggregate (RCA) and Crumb Rubber (CR) as partial sand aggregate replacement materials. The optimal cement-sand ratio was found to be 1:6, with the best replacement of RCA and CR being R15C1.5, showing lower values during drying shrinkage and carbonation tests.
INTERNATIONAL JOURNAL OF NANOELECTRONICS AND MATERIALS
(2021)
Review
Engineering, Environmental
Syafiqa Ayob, Norzila Othman, Wahid Ali Hamood Altowayti, Faisal Sheikh Khalid, Norshila Abu Bakar, Muhammad Tahir, Eddy Setiadi Soedjono
Summary: The use of heavy metals in the manufacturing industry has led to an increase in metallic compounds in wastewater, posing significant ecological and health threats. Adsorption is an effective method for treating solid waste effluent, but the price of commercial adsorbents like activated carbon has risen. By converting commercial adsorbents into agricultural waste, a green improvement can be achieved.
JOURNAL OF ECOLOGICAL ENGINEERING
(2021)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)