Article
Construction & Building Technology
Kezhen Yan, Haozhen Lan, Qun Li, Dongdong Ge, Yiran Li
Summary: With the development of the economy and society, a large amount of construction and biomass waste is produced annually. Improper disposal of waste can lead to air, soil, and groundwater pollution. This paper studies the influence of rice husk ash (RHA) content on the road performance of cement stabilized base material with recycled aggregate, and draws some conclusions.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Ruidong Wu, Shuning Shi, Yu Shen, Chen Hu, Mengfei Luo, Zichen Gan, Bin Xiao, Zeyu Wang
Summary: Urban construction generates a significant amount of construction waste, leading to substantial environmental issues. The sponge city concept is the direction of urban development, and permeable pavement concrete is a crucial material for sponge city construction. This study investigates the performance of recycled aggregate permeable pavement concrete under different influencing factors and provides insights on water binder ratios, aggregate particle gradations, fly ash content, and admixture effects. The research findings show the optimal conditions for desired strength and permeability of the concrete.
Article
Construction & Building Technology
Xu Cai, Kuanghuai Wu, Wenke Huang, Jiangmiao Yu, Huayang Yu
Summary: This study evaluated the performance of cement treated permeable concrete containing CB as the road base and found that CB contributed to fast-drying and low shrinkage. It was recommended that concrete containing 15% of CB in weight (CB-15) was suitable for moderate traffic level, and the concrete without CB (CB-0) for high traffic level. This study suggested a potential direction for large-scale application of RCA and CB as the concept of environmental protection becomes recognized worldwide.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Apichat Suddeepong, Apinun Buritatum, Sutep Dasdawan, Suksun Horpibulsuk, Teerasak Yaowarat, Menglim Hoy, Arul Arulrajah
Summary: In this study, the byproduct bottom ash (BA) with high porosity from coal-fired power plants was used to improve the quality of traditional asphalt cement AC60/70, producing low-cost porous asphalt concrete (PAC). Increasing the BA replacement ratio decreased the draindown and particle loss values of BA-AC60/70-PAC, and improved the Marshall properties, strength index, indirect tensile strength, indirect tensile resilient modulus, indirect tensile fatigue life, permanent deformation, rut depth, and skid resistance. At the same design criteria, the 20% BA replacement ratio yielded a 33% reduction in total construction cost for the BA-AC60/70-PAC surface course compared to the conventional PMA-PAC surface course.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Yaowen Hu, Hongzhou Zhu, Jue Li, Miao Yu, Yongsheng Yao
Summary: This study aims to investigate the effect of Solution Road RomixSoilfix (SRX) on the deformation performance of granular base material (GBM), and evaluate the feasibility of SRX modified GBM (SRX-GBM) as a flexible base in expressway structures. Experimental tests were conducted to analyze the influence of SRX content on the curing process, stability, and deformation performance of SRX-GBM. Results demonstrate that the use of SRX improves the California bearing ratio (CBR) of GBM and enhances its dry shrinkage resistance and water stability.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Meng Gao, Jun Dai, Hongjun Jing, Wanjun Ye, Taiwo Sesay
Summary: The study investigates the applicability and feasibility of using magnesium slag (MS) as a substitute for aggregate in cement-stabilized base course materials for road construction. The results show that when the cement dosage is above 5%, the mechanical properties of the cement-stabilized magnesium slag mixture (CMSM) meet the requirements for road base courses under medium-to-light traffic. MS enhances the development of the pozzolanic reaction, resulting in improved strength and compactness of CMSM. The use of MS as an aggregate for road base courses offers a sustainable solution that not only maximizes the use of solid wastes but also avoids potential safety hazards and environmental pollution.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Helena Lunkes Strieder, Vanessa Fatima Pasa Dutra, Angela Gaio Graeff, Washington Peres Nunez, Felipe Raul Meert Merten
Summary: This study evaluates the performance of pervious concrete produced with construction and demolition waste (CDW) aggregates. Different replacement levels of natural aggregates (NA) by recycled concrete aggregate (RCA), the use of rheology modifying admixture, and reduction of water-cement ratio were investigated. The laboratory and field results showed that RCA replacement improved hydraulic properties but decreased mechanical behavior of pervious concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Hasan Al-Mosawe, Amjad Albayati, Yu Wang, Nuha S. Mashaan
Summary: With rapid worldwide urbanization and population growth, there is an increasing demand for new road construction, which will lead to the consumption of a substantial amount of natural resources. The use of recycled concrete aggregate could be a possible solution to address the shortage of aggregates and reduce environmental pollution. This paper presents an experimental study on the use of recycled concrete aggregate for pavement subbase construction, examining its properties and performance under different stress conditions.
Article
Multidisciplinary Sciences
Barnali Debnath, Partha Pratim Sarkar
Summary: This study investigates the clogging behavior of pervious concrete pavement using brick aggregate and develops a prediction model for understanding and modeling the clogging nature. Experimental results show a significant improvement in permeability after pressure washing, indicating the effectiveness of rehabilitation.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Wenke Zhao, Yaning Zhang, Lei Li, Wentao Su, Guiyang Ma, Bingxi Li
Summary: This study used the Monte Carlo method to create a thermal model of porous concrete, analyzing the effects of aggregate areal ratio, air void size, and air void ratio on the road surface temperature. The results showed that these factors have a significant impact on the thermal characteristics of porous concrete.
APPLIED THERMAL ENGINEERING
(2021)
Article
Construction & Building Technology
Tereza Pavlu, Kristina Fortova, Diana Mariakova, Jakub Repka, Tomas Vlach, Petr Hajek
Summary: High-performance concrete (HPC) is a cement-based material with excellent properties and durability. However, the use of high-quality natural resources and additional materials in HPC leads to high costs and environmental impact. This study explores the possibility of using recycled concrete aggregate as a substitute, and finds that while there is a slight decline in mechanical properties, the replacement does reduce autogenous shrinkage and contribute to the sustainability goals set by the United Nations.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Wisitsak Tabyang, Cherdsak Suksiripattanapong, Chayakrit Phetchuay, Chuthamat Laksanakit, Nuntachai Chusilp
Summary: This research investigates the possibility of using MSWI FA geopolymer to stabilise the strength of RCA in pavement applications. The study found that the maximum dry unit weight of RCA-MSWI FA geopolymer specimens increased with MSWI FA replacement up to a certain point and then decreased, and identified the optimum ingredient requirements for low-volume and high-volume road applications.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
Ekrem Burak Toka, Murat Olgun
Summary: The study investigated the usability of recycled concrete aggregates (RCAs) and crushed aggregate (CA) in granular road base (GRB) and granular road subbase (GRSB) layers. Various laboratory tests were conducted to examine the performance of different mixture designs of RCAs and CA. The results showed that incorporating 50% RCA in GRB reduced the cost without adverse effects on material properties. Recycling concrete waste in this way can significantly contribute to reducing environmental pollution and preventing resource depletion.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Environmental Sciences
Adela P. Galvin, Sorlini Sabrina, Barbudo Auxi, Adolfo Pena, Antonio Lopez-Uceda
Summary: This study presents a case study of waste incorporation in the production of new recycled concrete blocks. The study evaluated the technical feasibility and leaching performance of the blocks using different percentages of recycled aggregates. The results showed that blocks with 20% recycled aggregates incorporation exhibited optimum physic-mechanical behavior. The leaching study revealed the mobility and release mechanisms of different elements, with none of them surpassing the limits for pollutant release in construction materials.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Construction & Building Technology
Qifeng Lyu, Pengfei Dai, Anguo Chen
Summary: A new type of sandwich-structured porous concrete was developed using mortar-extrusion and aggregate-bed 3D printing, aiming to automate its manufacturing and reduce cement content. Different mixes of mortar were evaluated, and the one with a water-to-cement ratio of 0.325 was found to be most suitable for the printing process. The porosity, permeability, and mechanical strengths of the printed porous concrete were tested, showing that larger aggregates reduced porosity and increased strength, while smaller aggregates facilitated printing but reduced strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
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)