Article
Construction & Building Technology
Sam A. Walling, Laura J. Gardner, Dale P. Prentice, Malin C. Dixon Wilkins, Adham A. Hammad, Wooyong Um, Claire L. Corkhill, Neil C. Hyatt
Summary: The stability and reactivity of SrCO3 in blended Portland-slag cement were investigated using XRD, TG-MS, SEM-EDX, and thermodynamic modelling. It was found that the addition of 30 wt% SrCO3 caused minor reactions and increased formation of carbonated AFm phases at 20 degrees C. However, at 60 degrees C, the stability of ettringite decreased and prevented its stabilization. Thermodynamic modelling showed that SrCO3 had only minor reactivity up to 360 days, and carbonate remained stable. This suggests that SrCO3 is an effective immobilisation matrix for 14C in a blended Portland-slag cement waste form suitable for long-term geological disposal.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Tangwei Mi, En-Hua Yang, Cise Unluer
Summary: This study evaluated the feasibility of using small proportions of Portland cement (PC) in reactive MgO cement (RMC) systems to promote the passivation of reinforcing steel. The results showed that the inclusion of 2% or more PC in RMC enabled the passivation of steel, resulting in the formation of a thicker passive film, mainly attributed to the increased pH of the pore solution.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Siqi Li, Jinbo Yang, Peng Zhang
Summary: The hydration and hardening properties of reactive magnesia and Portland cement composite were evaluated through macro and micro property tests. The content of reactive magnesia significantly affects the hydration and hardening properties of the composite. The size of Mg(OH)2 crystals in the hardened composite can cause micro cracks and also heal them under moist curing conditions. The loose cluster structure of Mg(OH)2 crystals leads to poor binding properties and an increase in pore quantity in the hardened composite.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Agricultural Engineering
Mehdi Chougan, Seyed Hamidreza Ghaffer, Pawel Sikora, Ewa Mijowska, Wojciech Kukulka, Dietmar Stephan
Summary: This study investigates the use of wheat straw as reinforcement for OPC-free composites in the construction industry. It proposes efficient and eco-friendly pre-treatment and surface functionalisation methods to improve the performance of wheat straw and its compatibility with low-carbon binders. The results show that the pre-treated and functionalised wheat straw enhances the interfacial bond between the straw and the OPC-free matrix, leading to improved mechanical properties of the composite materials.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Jiao Yu, Heping Zheng, Dongshuai Hou, Jinrui Zhang, Weixiao Xu
Summary: This study conducted a multi-scale exploration of SCA-modified rubber-cement-based materials through a combination of experiments and simulations for the first time, and found that KH570 modification can effectively improve the mechanical properties of rubber-cement-based composites. KH570 molecules can repair interfacial defects between rubber particles and cementitious material, enhancing the bonding strength between the two phases.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Mawardi Mawardi, Illyas Md Isa, Alizar Ulianas, Edtri Sintiara, Fadhlurrahman Mawardi, Rizky Zalmi Putra
Summary: This study investigates the potential of Napa soil as an alternative additive in Portland composite cement production. Adding 4% Napa soil to cement resulted in significantly better compressive strength compared to the control group. All Napa soil cements analyzed in this research met the Indonesian National Standard for cement.
Article
Construction & Building Technology
Piotr Gorak, Przemyslaw Postawa, Lidia Natalia Trusilewicz, Artur Lagosz
Summary: This study presents testing results of cement mortars using Composite Lightweight Aggregates (CLA) as partial substitutes of natural aggregates, which are sustainable products obtained from waste by-products. The research evaluates the physicochemical properties of fresh and hardened mortars with different CLA production methods and fly ash types, showing improvements in mortar properties when using surface-modified PET and FA-based CLA aggregates. The study suggests that using CLA aggregates can enhance the mechanical properties of mortars and provide a potential ecological solution for building applications.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Kamila Gawel, Sigurd Wenner, Narjes Jafariesfad, Malin Torsaeter, Harald Justnes
Summary: This study investigates the effects of electrochemical polarization on cement hydration products in the vicinity of conductive surfaces. The results show that there are differences in hydration products on the anode and cathode surfaces, and different compounds are formed on steel and graphite electrodes. These differences are mainly caused by electrophysical and electrochemical processes, which are important for the engineering design of electrically conductive cement composites.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Djassou Adjoavi Colette, Adjoumani Yao Joseph, Yao Kouassi Benjamin, Drogui Allali Patrick
Summary: The purpose of this study was to optimize the treatment conditions of rubber aggregates using a full factorial design. The results showed that NaOH concentration and treatment duration, as well as the interaction between NaOH treatment duration and devulcanization, significantly influenced the compressive strength of rubberized concrete. The optimal treatment conditions were 10% NaOH concentration, 60 min NaOH treatment duration, and 30 s devulcanization, resulting in a 12.11% increase in compressive strength compared with concretes incorporating untreated rubber aggregates.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Ran Zhang, Haoxiang Wang, Jie Ji, Zhi Suo, Ziheng Ou
Summary: This study investigated the effects of different modification methods on the surface activation of waste tire rubber powder. Both physical cleaning and chemical reaction methods improved the surface activation and hydrophilicity of the rubber powder. The physical cleaning method using 5% NaOH solution showed the best improvement in hydrophilicity and activity. The chemical reaction method using KH-550 had the highest activation effect on the rubber powder.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Civil
Yongfeng Deng, Yun Jiang, Jun Wu, Honglei Sun, Xueyu Geng
Summary: The paper presents a study on the modification of desert silty sands using anionic polyacrylamide (PAM) with ordinary Portland cement (OPC). The results show that a rational PAM dosage can significantly improve the mechanical performance and durability of the modified sands.
TRANSPORTATION GEOTECHNICS
(2022)
Article
Crystallography
Dongqing Zhong, Shuguang Wang, Yu Gao, Luming Wang, Yanbo Li, Jiaqing Wang
Summary: In this study, three different modification methods were used to modify waste rubber powders, and their effects on the mechanical properties and frost resistance of magnesium oxychloride cement were examined. It was found that magnesium oxychloride cement mixed with NaOH modified rubber powders showed the best improvement in mechanical properties, while styrene-acrylic emulsion had the weakest effect. Increasing the content of rubber powders reduced the mass loss of specimens during freeze-thaw cycles.
Article
Construction & Building Technology
Sandra L. R. Rodriguez, O. Dominguez, Jorge H. A. Diaz, Christian Garcia, Fidencio Tapia
Summary: The study investigated the effects of incorporating rubber-tire-powder and fluorogypsum in Portland cement mixtures. The results showed that using these two waste materials simultaneously improved the properties of the cement, making it a more ecological and relatively cheaper option compared to other surface treatments.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Peerayut Tapangnoi, Pongdhorn Sae-Oui, Weerawut Naebpetch, Chomsri Siriwong
Summary: Spent coffee ground (SCG) was purified and characterized. The purified SCG (PSCG) was treated with Bis-triethoxysilylpropyl tetrasulfide (TESPT). Both PSCG and TESPT-treated PSCG were incorporated into natural rubber (NR) to investigate their reinforcement magnitude. The results showed that the purification of SCG led to the eradication of lignin and other non-polysaccharide components, resulting in increased specific surface area and cellulose content of PSCG. The addition of PSCG into NR improved modulus and hardness, but the reinforcement was not very high. The TESPT treatment significantly improved the reinforcement of PSCG. However, the reinforcement of both PSCG and TESPT-treated PSCG was relatively low compared to commercial nanofillers, making them a cheap and ecofriendly filler in NR.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Construction & Building Technology
Murat Dener, Mehmet Karatas, Mehrzad Mohabbi
Summary: This study fabricated a self compacting alkali activated slag/Portland cement composite design using lightweight aggregate for high temperatures. Six composite mixtures were determined for high temperature experiment, and compressive strength began to decrease with increasing temperature, reaching a minimum at 800 degrees C. Microcracks became more evident at 600 degrees C and 800 degrees C for different mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wei Hu, Xiaoyang Jia, Xingyi Zhu, Aiwu Su, Yong Du, Baoshan Huang
AUTOMATION IN CONSTRUCTION
(2020)
Article
Green & Sustainable Science & Technology
Yongfeng Wang, Qingke Nie, Baoshan Huang, Huicai Cheng, Liang Wang, Qiang He
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Green & Sustainable Science & Technology
Rui Xiao, Yuetan Ma, Xi Jiang, Miaomiao Zhang, Yiyuan Zhang, Yanhai Wang, Baoshan Huang, Qiang He
JOURNAL OF CLEANER PRODUCTION
(2020)
Editorial Material
Construction & Building Technology
Bingye Han, Baoshan Huang
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2020)
Article
Engineering, Environmental
Wei Hu, Yuetan Ma, Michael Koehler, Hongren Gong, Baoshan Huang
Summary: Geopolymer has the potential to utilize industrial and urban wastes, but the complexity of mixture design necessitates a quick scanning tool for optimization. This study demonstrates that isothermal calorimetry can quantify compositional differences between source materials, predict mechanical properties of geopolymers, and find correlations between heat and strength for similar microstructure materials.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Yuandong Xu, Chao Fu, Ning Hu, Baoshan Huang, Fengshou Gu, Andrew D. Ball
Summary: The article introduces a phase linearisation-based modulation signal bispectrum method that can effectively handle noise in bearing vibration signals, obtaining accurate and reliable diagnostic results.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2021)
Article
Construction & Building Technology
Hongren Gong, Yiren Sun, Yuanshuai Dong, Wei Hu, Bingye Han, Pawel Polaczyk, Baoshan Huang
Summary: This study developed gradient decision tree boosting models to estimate dynamic moduli of hot mix asphalt mixtures using data from the NCHRP report, achieving higher predictive accuracy compared to Witczak's models and comparable to neural networks in terms of complexity.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Wei Yin, Hang Lu, Jie Yuan, Baoshan Huang
Summary: Loading tests were conducted on the dowel bar-concrete substructure of concrete pavement to investigate the mechanical characteristics of dowel bar-concrete interaction. The study calculated the bearing modulus and deduced a theoretical equation for tangential stress at the most dangerous point of concrete. Additionally, the deterioration process of concrete around the dowel bar was revealed, showing two failure modes.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Engineering, Civil
Wei Hu, Pawel Polaczyk, Xiaoyang Jia, Hongren Gong, Baoshan Huang
TRANSPORTATION GEOTECHNICS
(2020)
Article
Construction & Building Technology
Yuetan Ma, Shifeng Wang, Hongyu Zhou, Wei Hu, Pawel Polaczyk, Miaomiao Zhang, Baoshan Huang
Summary: This study focused on improving the compatibility of asphalt modified with recycled plastic and rubber, which has shown significant enhancement in physical properties through the increase of recycled rubber content, addition of compatibilizer, and use of pre-combined recycled rubber-plastic blends. These improvements present a promising pathway for large-scale commercial applications of plastic and rubber modified asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Xiaoyang Jia, Mark Woods, Hongren Gong, Di Zhu, Wei Hu, Baoshan Huang
Summary: This study focused on the influence of pavement data on deflection measurements, finding that pavement type, surface condition, and distress have a significant impact on deflection indices, with surface condition indices on flexible pavements being more closely related to deflection indices.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Ergonomics
Wei Hu, Violet Freudenberg, Hongren Gong, Baoshan Huang
JOURNAL OF SAFETY RESEARCH
(2020)
Article
Construction & Building Technology
Xi Jiang, Rui Xiao, Yuetan Ma, Miaomiao Zhang, Yun Bai, Baoshan Huang
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Miaomiao Zhang, Hongren Gong, Xiaoyang Jia, Rui Xiao, Xi Jiang, Yuetan Ma, Baoshan Huang
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Yongjie Ding, Xuejuan Cao, Hongren Gong, Baoshan Huang, Peng Guo
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2020)
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)
