Article
Construction & Building Technology
Gao Deng, Yongjia He, Linnu Lu, Fazhou Wang, Shuguang Hu
Summary: The partial replacement of cement with high-volume slag in concrete can reduce environmental pressure caused by cement production. This study investigates the evolution of pore structure and sulfate attack in high-volume slag blended mortars, and evaluates methods for determining sulfate resistance. The results show that increasing slag content improves sulfate resistance and reduces air voids detrimental to it.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Xiancui Yan, Linhua Jiang, Pinghua Zhu, Hui Liu, Xinjie Wang, Shaowei Wang, Chunhong Chen
Summary: This study assessed the effect of compressive fatigue on sulfate ion diffusion in concrete containing slag, and found that compressive fatigue accelerated the diffusion of sulfate ions in concrete, with a more prominent effect in steam-cured concrete.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Environmental Sciences
Manu Harilal, R. P. George, John Philip, Shaju K. Albert
Summary: This study demonstrates the enhanced chemical resistance of a blended concrete mix (CFNI) containing 40% fly ash, 2% nanoparticles, and 2% sodium nitrite inhibitor against calcium leaching, acid and sulfate attacks. The addition of nanoparticles and inhibitors reduced w/c ratio, increased surface pH, converted soluble calcium hydroxide into insoluble calcium silicate hydrate, filled pores/voids, and reduced shrinkage and cracking in the concrete. The compact microstructure of CFNI prevented leaching and reduced the ingress of aggressive chemical ions, making it ideal for high-quality, low-permeable concrete structures in natural and industrial environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Yuqi Zhou, Weiwei Liu
Summary: This study aimed to analyze the feasibility of utilizing granulated copper slag (GCS) as a mineral admixture for massive concrete in saline-soil environment through experiments. Results showed that GCS can effectively reduce hydration heat, improve workability, and enhance chloride permeability resistance of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Rahul Sharma, Rizwan A. Khan
Summary: The study examined the use of copper slag as fine aggregates in self compacting concrete to improve sulfate resistance. The results showed that CS mixes blended with metakaolin exhibited the highest compressive strength and dense microstructure. Increasing the percentage of CS substitution enhanced endurance against sulfate attack, except for 100% CS substitution in certain series.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Construction & Building Technology
Md Manjur A. Elahi, Christopher R. Shearer, Abu Naser Rashid Reza, Ashish Kumer Saha, Md Nabi Newaz Khan, Md Maruf Hossain, Prabir Kumar Sarker
Summary: In general, fly ash, slag, silica fume, and metakaolin can effectively mitigate sulfate attack, but the performance depends on replacement rate, sulfate cation exposure, and their chemical and physical properties. Performance was found to be improved with increased dosage rates for all SCMs except silica fume and Class C fly ash, and mixed for metakaolin and silica fume in magnesium sulfate at higher replacement rates.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Muhammad Faisal Rasheed, Abdur Rahim, Muhammad Irfan-Ul-Hassan, Babar Ali, Nazam Ali
Summary: This research evaluated the mechanical properties and durability of sulfur concrete using different waste aggregates, comparing them with conventional binder concretes. It was found that sulfur concrete made with slag had the highest strength and performed well in harsh environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Penggang Wang, Hua Fu, Tengfei Guo, Wenqiang Zuo, Haitao Zhao, Li Tian, Chunlei Chen
Summary: The study investigates the volume deformation of steam-cured concrete, showing that autogenous shrinkage occurs during the constant temperature stage of steam curing and the shrinkage after steam curing is mainly due to drying effects. The addition of fly ash can increase shrinkage during steam curing but is beneficial for shrinkage after steam curing. A micromechanical model based on capillary tension, interior humidity, and hydration degree accurately predicts the total and autogenous shrinkage of concrete specimens after steam curing.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Mechanical
Benxing Lou, Fuheng Ma
Summary: The influences of curing temperatures on fracture characteristics were investigated for steam-cured concrete using the three-point bending method. The results showed that the optimum curing temperature was around 45°C, which provided the best fracture properties for the concrete.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Construction & Building Technology
Xu Cheng, Wei Tian, Jinfeng Gao, Yuan Gao
Summary: This study investigates the effect and mechanism of steel slag coarse aggregate on sulfate erosion resistance of concrete through erosion tests, material mechanics tests, and microscopic tests. The results show that utilizing steel slag as a substitute for coarse aggregate in concrete can significantly alleviate the damage caused by sulfate solutions. The active components in steel slag promote the production of hydrated calcium silicate gel, improving the strength and durability of the material. The prediction results indicate that concrete with a 60% steel slag coarse aggregate substitution rate has a better service lifetime under sulfate solution erosion.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Xu Cheng, Wei Tian, Jinfeng Gao, Yuan Gao
Summary: This study investigated the performance changes and resistance mechanism of steel slag coarse aggregate concrete under sulfate erosion, finding that the use of steel slag can significantly improve the durability and compressive strength of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Shipeng Zhang, Zaid Ghouleh, Alain Azar, Yixin Shao
Summary: Carbonation curing of concrete can enhance its resistance to low temperature sulfate attack by introducing calcium carbonates, resulting in improved durability against issues such as spalling, expansion, and strength reduction.
MATERIALS AND STRUCTURES
(2021)
Article
Construction & Building Technology
Benxing Lou, Fuheng Ma
Summary: This paper investigated the fracture properties of concrete after steam curing at a constant temperature of 60 degrees C for various time periods. The results showed that the initial fracture toughness of concrete increased and then decreased with increasing steam curing time, while the unstable fracture toughness and fracture energy increased monotonously and leveled off between 16 h and 48 h. The equivalent maturity approach was proven to be effective in evaluating fracture parameters of steam-cured concrete. Additionally, it was recommended to keep the steam curing time within 16 hours for better development of fracture properties.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Multidisciplinary Sciences
Wei Feng
Summary: This study evaluates the impact of landfill leachate on the mechanical properties of concrete using micro-nano indentation tests and uniaxial compression tests. The results show that landfill leachate erosion leads to an increase in microscopic cracks on the concrete surface and has the most significant weakening effect on the elastic modulus of concrete.
SCIENTIFIC REPORTS
(2022)
Article
Construction & Building Technology
Changjiang Liu, Fulian Chen, Xiaowei Deng, Yuyou Wu, Zhoulian Zheng, Bo Yang, Dawei Yao, Jingwei Yang, Jiangying Yang
Summary: This paper compares the different properties of nano-silica modified manufactured sand concrete under standard curing and steam curing. The results show that nano-silica has a similar effect on concrete under the two curing methods. The addition of nano-silica can mitigate the loss of later strength and impermeability caused by steam curing, and it has a synergistic effect with steam curing, resulting in higher early strength and higher corrosion resistance coefficient.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Yujia Xiao, Ming-Zhi Guo, Ba Tung Pham, Tung-Chai Ling
Summary: This study investigates the feasibility of using luminescent material on recycled glass aggregate for decorative architectural mortar. The study finds that the luminescent-glass aggregate (LGA) can enhance the properties of architectural luminescent-glass mortars (ALM), such as compressive strength and resistance to alkali-silica reaction. The luminescent surface emits yellowish-green light and remains bright for 8 hours in a dark environment.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Yunchao Liang, Hongqiang Chu, Youxu Zeng, Ming-Zhi Guo, Zijian Song, Zhengyu Zhu, Linhua Jiang
Summary: This study investigated the effects of electroless plating time and temperature on the preparation of Cu-plated hardened cement paste (HCP) and successfully applied electroless copper plating to modify the HCP surface for antibacterial properties.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Xiaoli Wang, Ming-Zhi Guo, Gongbing Yue, Qiuyi Li, Tung-Chai Ling
Summary: This study investigated the synthesis of high belite sulfoaluminate cement using petroleum coke desulfurization residue, fly ash, carbide slag, and bauxite at low sintering temperatures. The thermal behavior, mechanical properties, heat of hydration, and hydration products of the cement were studied. The results showed successful production of the desired phases at low sintering temperatures, and the industrial solid wastes can be utilized up to 80%. The developed cement exhibited satisfactory clinker strength and had lower cumulative heat release compared to traditional sulfoaluminate cement.
CEMENT AND CONCRETE RESEARCH
(2022)
Review
Construction & Building Technology
Qifeng Song, Ming-Zhi Guo, Tung-Chai Ling
Summary: This paper investigates the development and mechanism of alternative binders in high temperature performance. It is found that different types and contents of supplementary cementitious materials have significant effects on high temperature properties, and the alteration of minerals and microstructure changes are summarized.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Wenhao Xu, Zijian Song, Ming-Zhi Guo, Linhua Jiang, Hongqiang Chu
Summary: In this study, magnesium oxychloride cement (MOC) was used as a sustainable carrier for effective recycling of dredged sediment (DS). The research found that DS can enhance the water resistance of MOC pastes, despite the negative influence of dilution on their mechanical properties. Strength retention tests showed that the compressive strength retention rate of MOC pastes blended with 10%-40% DS positively correlated with the DS content, and the modification induced by DS was superior to that by calcined dredged sediment (CDS). Multiple microscopic approaches were adopted to elucidate the modification of MOC by DS, and it was found that the addition of DS increased the porosity of the modified MOC pastes, thereby providing more channels for water intrusion and improving the water resistance of the MOC pastes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Construction & Building Technology
Guohui Yang, Linhua Jiang, Fangfang Zhi, Weizhun Jin, Geyang Li
Summary: This study aims to evaluate the influence of cation types on the rust resistance performance of new nucleic acid corrosion inhibitors in simulated concrete pore solution. The results show that cation types affect the thickness and compactness of the passivated film on the steel surface, and also impact the critical chloride concentration of the nucleic acid inhibitor.
MAGAZINE OF CONCRETE RESEARCH
(2023)
Article
Chemistry, Physical
Saddick Donkor, Zijian Song, Linhua Jiang, Honqiang Chu
Summary: The adsorption mechanisms of inhibitor molecules at the metal-electrolyte interface play a significant role in metallic corrosion control in aqueous conditions. Computational techniques are increasingly used in metal corrosion inhibition research due to their advantages in time, cost, and environmental constraints, as well as the limitations of experimental techniques. This paper discusses the fundamental principles of MD simulation, adsorption mechanism, quantum calculations, and major publications in anticorrosive studies, highlighting the necessity of computational and theoretical approaches to substantiate experimental results.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Construction & Building Technology
Lei Chen, LinHua Jiang, Weizhun Jin, Ming-Zhi Guo, Yalu Niu, Hongqiang Chu, Zijian Song
Summary: This paper investigated the effects of citric acid and its salts on the properties of light-burned magnesia cement-based materials. The results showed that citric acid inhibited the expansion of the materials, while magnesium citrate and lithium citrate promoted expansion. The study also observed aggregation, dissolution, and precipitation of crystals during hydration.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Zijian Song, Na Xu, Lin Yu, Ming-Zhi Guo
Summary: The study found that ultrasonic trigger mode is more effective in repairing cement mortar, there is a threshold for ultrasonic power density to affect the repair efficiency, and increasing the ultrasonic frequency appropriately can enhance the repair efficiency.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Hongjie Xue, Haoyu Zhu, Mingzhi Guo, Shuwen Shao, Shiyi Zhang, Yan Zhang
Summary: In this study, four series of samples with different recycled aggregate (RA) replacement ratios were prepared to investigate the triaxial mechanical behavior of recycled aggregate concrete (RAC). Experimental results showed that the failure stress difference decreased with increasing confining pressure for the concrete samples. Based on the test results, a modified elastoplastic model was developed to accurately predict the mechanical behavior of RAC.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Qifeng Song, Ming-Zhi Guo, Yue Gu, Tung-Chai Ling
Summary: This study examines the impact of CO2 curing on the high-temperature performance of cement paste blended with different supplementary cementitious materials (SCMs). The results indicate that the carbonated samples cured for 2 days and then standard-cured for 26 days (CS curing) exhibited the best high-temperature resistance, as evidenced by higher compressive strength, lower water absorption, and decreased water sorptivity. Moreover, the use of CS curing with SCM blended cement blocks has the potential to reduce carbon footprint and improve performance under elevated temperatures, making it an environmentally friendly option.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Zijian Song, Yingjie Zhang, Lang Liu
Summary: This study used diatomite-based materials to prepare a rapid test bar for chloride ions in fresh concrete. The preparation was optimized considering liquid uptake efficiency and coloring consistency. Microscopic properties were examined to understand the mechanisms and a relationship between indicator numbers and chloride contents was established. The environmental stability of the test bars was examined to ensure their reliability. The test bars, composed mainly of diatomite and portlandite with a mesoporous structure, showed applicability and stability in detecting chloride content in fresh concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Jie Luo, Yi Xu, Hongqiang Chu, Lu Yang, Zijian Song, Weizhun Jin, Xiaowen Wang, Yuan Xue
Summary: The utilization of a novel monolithic superhydrophobic cement material effectively prevents water infiltration and enhances the longevity of the material. A method for improving superhydrophobic concrete was investigated with the aim of increasing its strength and reducing its cost by compounding superhydrophobic substances with water repellents. The findings demonstrate that the contact angle of the specimen increases with an increase in the dosage of isobutyltriethoxysilane (IBTES), but its compressive strength decreases significantly. The water absorption of the cementitious materials is influenced by the combined effect of porosity and superhydrophobicity.
Article
Construction & Building Technology
Yi Xu, Songru Tong, Xu Xu, Juntao Mao, Xuan Kang, Jie Luo, Linhua Jiang, Ming-Zhi Guo
Summary: This study aimed to investigate the impact of mixing expanded polystyrene (EPS) particles on foamed concrete. By comparing the modified EPS foamed concrete with ordinary foamed concrete, the influence of EPS particle dosage and size on the mechanical properties and thermal conductivity was analyzed. The pore structures of the two types of foamed concrete were characterized and compared using SEM, MIP, and IPP. The results showed that replacing 60% foam with large and small EPS particles led to lower water absorption and increased compressive strength. The thermal conductivity of the EPS modified foamed concrete was similar to/even slightly lower than that of the ordinary foamed concrete. The addition of EPS in foamed concrete increased the proportion of small connected pores and reduced the proportion of medium and large pores, effectively improving the stability.
JOURNAL OF BUILDING ENGINEERING
(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)
