Article
Construction & Building Technology
Sean Monkman, Mark MacDonald, Larry Sutter
Summary: A new method utilizing carbon dioxide treatment to allow the use of wash water as mixture water in concrete production was investigated. The CO2-treated solids displayed latent hydraulicity and reduced negative impacts associated with untreated water. This approach enables the reuse of three waste streams to produce more sustainable concrete.
MATERIALS AND STRUCTURES
(2021)
Article
Chemistry, Physical
Danute Vaiciukyniene, Aras Kantautas, Simona Tuckute, Fallon Manhanga, Eugenijus Janavicius, Ernestas Ivanauskas, Zymantas Rudzionis, Aloyzas Gaudutis
Summary: Concrete plants generate alkaline concrete wash water which harms the environment, but when combined with zeolitic by-product it can enhance mechanical properties and create a denser microstructure in concrete. Reusing wash water in concrete production can effectively reduce the consumption of tap water.
Article
Chemistry, Physical
Tao Liu, Jianfeng Fan, Ziqiang Peng
Summary: This study investigates the properties of fine and ultrafine recycled concrete aggregate (RCA) and their influence on the long-term performance of the designed matrix. The results show that increasing ultrafine RCA content can improve compressive strength and resistance to water penetration, but it also increases drying shrinkage. These findings contribute to the understanding of the utilization of ultrafine RCA in road construction.
Article
Construction & Building Technology
Sayyed Farshad Ahmadi, Mohammad Reisi, Mohammad Chalkesh Amiri
Summary: This study investigates the feasibility of reusing granite waste from natural stone processing factories in the production of foamed concrete. It is found that the foamed concrete made with granite waste exhibits similar performance to that made with fine sand, with higher compressive and flexural strength. However, it also has higher water absorption. Additionally, the use of granite waste instead of fine sand improves the life cycle assessment indicators of the specimens.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Murtadha Adekilekun Tijani, Wasiu Olabamiji Ajagbe, Oluwole Akinyele Agbede
Summary: This study explores the use of sorghum husk ash (SHA) and recycled concrete aggregate (RCA) as alternatives to cement and natural aggregate (NA) in standard pervious concrete (PC) mixtures. The results show that the incorporation of SHA decreases the density and compressive strength of PC, while the incorporation of RCA improves the hydraulic properties but reduces the compressive strength. Additionally, the use of SHA and RCA can reduce CO2 emission and production cost.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Construction & Building Technology
Mohanna Bahraman, Gholamreza Asadollahfardi, Amir Masoud Salehi, Behnaz Yahyaei
Summary: The use of wash water or synthetic wastewater instead of tap water in SCC shows feasibility, but it may have impacts on workability and strength. Further research is needed for practical application.
JOURNAL OF BUILDING ENGINEERING
(2021)
Review
Construction & Building Technology
Amin Hamdi, Gamal Abdelaziz, Khatib Zada Farhan
Summary: Over 1.5 billion waste tires are generated annually worldwide, with a predicted 4% increase in demand reaching 3 billion units by 2019. The black pollution caused by these non-biodegradable waste tires poses a potential threat to the environment. Incorporating discarded tires into concrete as aggregates can be an effective way to immobilize waste and reduce environmental impact.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Environmental Sciences
Jamil Ahmed, Li Ping Wong, Yan Piaw Chua, Muhammad Zafar Iqbal Hydrie, Najeebullah Channa
Summary: This study aimed to evaluate WASH services in primary schools in Pakistan and their relationship with school performance. Findings revealed low Basic WASH facilities coverage in schools in Sindh province, with inconsistencies in availability, accessibility, and functionality of WASH facilities. School performance was significantly associated with the presence of WASH interventions and/or policies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Vishojit Thapa, Daniele Waldmann
Summary: The study showed that using calcined GWM powder as a partial replacement for Ordinary Portland cement in blended cement pastes and concretes can enhance the long-term properties of the concrete, reducing drying shrinkage and progression of carbonation.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Mohd Salman Rais, Rizwan Ahmad Khan
Summary: Recycling of concrete waste can enhance the sustainability of concrete construction, improving the performance of recycled aggregate concrete through biomineralization technique, while bacterial activity boosts compressive strength and durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Zhihai He, Ruihan Hu, Zhiming Ma, Xin Liu, Changqing Wang, Huixia Wu
Summary: The objective of this study was to investigate the micro-structure and chloride transport of cement concrete using thermoactivated construction spoil powder (CSP) as a substitute for cement. The results highlighted that the thermoactivated CSP improved the micro-structure and strength of the concrete, while un-treated CSP had a negative impact.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Agricultural Engineering
Pei Lyu, Liangjun Xia, Xin Liu, Weilin Xu, Christopher Hurren, Xungai Wang
Summary: In this study, ethanol-water solution was used to reuse hemp degumming solution and recover gum, reducing effluent and adding value to lignin-rich residues. The results showed that cellulose content increased and fiber tenacity improved with each degumming cycle, and spherical lignin particles were successfully extracted.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Environmental Sciences
Ankita Pran Dadhich, Pran N. Dadhich, Rohit Goyal
Summary: Rural areas in India lack improved drinking water, sanitation, and hygiene (WaSH) facilities. This study conducted a household survey using GPS technology to evaluate WaSH conditions in the region and utilized machine learning algorithms for risk mapping and prediction. Results showed that while toilet facilities have improved, there is still a gap between ownership and usage. Factors such as the presence of toilets in houses, water supply in toilets, and high literacy rates were found to increase toilet usage. The study highlights the association between gender inequalities and WaSH conditions, emphasizing the potential of the WaSH index as a monitoring tool.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Ahmed M. Elkerany, Mostafa M. Keshta, Mohamed M. Yousry Elshikh, Ahmed A. Elshami, Osama Youssf
Summary: This study designed, prepared, tested, analyzed, and compared fourteen sustainable concrete mixes containing metakaolin (MK) and magnetized water (MW). The mechanical and durability characteristics of the concrete were assessed, and microstructural and chemical analyses were conducted. The results showed that using 10% MK as a cement additive in MW concrete enhanced all measured mechanical characteristics. The microstructural and chemical analyses supported the increase in compressive strength by indicating more C-S-H gel production and less CH in MW concrete with 10% MK as a cement additive.
Article
Construction & Building Technology
Mostafa M. Keshta, Mohamed M. Yousry Elshikh, Mosbeh R. Kaloop, Jong-Wan Hu, Ibrahim Abd ELMohsen
Summary: This study focuses on exploring the use of volcanic ash as supplementary cementitious material to produce sustainable concrete. The results show that the characteristics of volcanic concrete are associated with the thermal stability of volcanic ash and the improved pH of the water used.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Analytical
Hossein Ehsani, Naser Mehrdadi, Gholamreza Asadollahfardi, Gholamreza Nabi Bidhendi, Ghasem Azarian
Summary: In this study, the continuous electrocoagulation process (CECP) was applied for pre-treatment of real wastewater from the moquette-manufacturing industry. The influences of different operational parameters were investigated, and under optimal conditions, CECP showed high removal efficiencies and proved to be a more effective and economical method compared to traditional methods.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Green & Sustainable Science & Technology
G. Asadollahfardi, N. Heidarzadeh, A. Sekhavati, M. Asadi
Summary: This study used dynamic programming approach to reassess water quality monitoring stations in Mond Basin Rivers in Iran, optimizing the stations for irrigation and drinking purposes, with the optimal number predicted to be 12. The majority of retained stations were located in the southern part of the basin, indicating potential differences in river water quality compared to the northern part.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Construction & Building Technology
Behnaz Yahyaei, Gholamreza Asadollahfardi, Amir Masoud Salehi
Summary: The aim of this study is to develop self-compacting concrete with higher workability and durability properties by replacing mixing water with nano-bubble without compromising mechanical strength. The results show that using the nano-bubble in hardened concrete increases compressive and tensile strength, but has little impact on workability of different concrete mixtures.
STRUCTURAL CONCRETE
(2022)
Article
Construction & Building Technology
Mohanna Bahraman, Gholamreza Asadollahfardi, Amir Masoud Salehi, Behnaz Yahyaei
Summary: The use of wash water or synthetic wastewater instead of tap water in SCC shows feasibility, but it may have impacts on workability and strength. Further research is needed for practical application.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Behnaz Yahyaei, Gholamreza Asadollahfardi, Amir Masoud Salehi, Negar Esmaeili
Summary: This research investigated the effect of using micro-nano bubbles and superplasticizers on the rheology of self-compacting concrete. The results showed that an increased rate of superplasticizer improved flowability and passing ability in all specimens. The samples made with micro-nano bubbles exhibited higher yield stress and plastic viscosity. Shear-thickening behavior was observed in samples produced with tap water and superplasticizer, while shear-thinning behavior was observed in SCC with micro-nano bubbles.
STRUCTURAL CONCRETE
(2022)
Correction
Environmental Sciences
Alireza Gholizade, Gholamreza Asadollahfardi, Reza Rezaei
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Civil
Asadollahfardi Gholamreza, Mojtaba Tayebi Jebeli, Amir Abbasi Khalil, Hadi Shahir
Summary: This study explores the use of waste foundry sand and treated wastewater in concrete production as a means of recycling solid waste and reusing water resources. The results show that the combination of 20% waste foundry sand and 50% treated wastewater improves the mechanical properties and durability of concrete, while reducing water adsorption.
AUSTRALIAN JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Mojtaba Tayebi Jebeli, Gholamreza Asadollahfardi, Amir Abbasi Khalil
Summary: Waste foundry sand (WFS) is a major industrial solid waste that can be used in making green concrete. Previous studies have shown that up to 20% of sand can be replaced with WFS. This study investigates the use of micronano bubbles water (MNBW) to further increase the replacement of sand with WFS in concrete. The results show that MNBW reduces the workability of concrete, but superplasticizers can be used to maintain it. Furthermore, the addition of MNBW accelerates cement hydration process and significantly improves compressive strength.
JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
(2022)
Article
Engineering, Environmental
Gholamreza Asadollahfardi, Mahdie Yazdani, Mohammad Sina Sarmadi, Ahmad Khodadadi Darban
Summary: This study aims to investigate the effectiveness of enhanced electrokinetic (EK) remediation in treating arsenic-contaminated sediment. The results reveal that using citric acid as an enhancement agent significantly improves arsenic removal efficiency.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Environmental
Gholamreza Asadollahfardi, Aida Hessami, Alireza Gholizade, Reza Rezaei
Summary: The textile and dyeing industries are major water-consuming and polluting industries. The wastewater from these industries is characterized by its color. Conventional purification methods are not effective in removing the colored dye compounds present in the wastewater. This study investigated the use of advanced oxidation processes (AOPs) for the removal of Reactive Blue dye 19 (RB19) from wastewater. The results showed that UV/NaOCl AOP had the highest removal efficiency of RB19 at optimal conditions.
REMEDIATION-THE JOURNAL OF ENVIRONMENTAL CLEANUP COSTS TECHNOLOGIES & TECHNIQUES
(2023)
Article
Green & Sustainable Science & Technology
Gholamreza Asadollahfardi, Salman Noghani, Azadeh Panahandeh, Amirmohsen Samadi, Ehsan Asnaashari
Summary: The environmental sustainability of the Chitgar Lake construction project in Tehran, Iran was evaluated using a life cycle assessment (LCA) method. The results showed that the construction and operation phases of the lake had significant impacts on global warming, human toxicity, acidification, eutrophication, resource depletion, climate change, ecosystem quality, and human health.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Construction & Building Technology
Haniyeh Hosseinzadeh, Amir Masoud Salehi, Mojtaba Mehraein, Gholamreza Asadollahfardi
Summary: The study compared the properties of high-strength and ordinary concrete with different types of fibers (PPFs, HPP fibers, and SF) under standard and sulfate curing conditions. The addition of PPF and SF reduced the workability of the mixtures containing supplementary cementitious material. The mixture with 1% SF and 0.2% PPF showed the highest compressive strength, while the mixture with 0.5% HPP fibers, 1% SF, and 0.2% PPF showed the highest tensile strength. The flexural strength was highest in the mixture with 0.5% HPP fibers and 1% SF. Fiber-reinforced concretes had lower 30-minute water absorption compared to non-fiber samples, with the sample containing 0.5% PPF and 20% silica fume showing the lowest absorption of 0.53%.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Seyed Mahmood Fatemi Aghda, Amirmohsen Samadi, Gholamreza Asadollahfardi, Farhad Dastafkan
Summary: This study developed a fluoride concentration zoning map using fuzzy logic and GIS techniques, and identified suitable locations for developing rural settlements. The results demonstrate that the majority of the area has poor water quality, with only a small proportion being suitable for rural settlements.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2023)
Article
Multidisciplinary Sciences
Gholamreza Asadollahfardi, Malihe Afsharnasab, Mohammad Hossein Rasoulifard, Mojtaba Tayebi Jebeli
Summary: The performance of a titanium dioxide photocatalyst reactor in removing acid red 14 was predicted using radial basis function (RBF), Adaptive Neuro-Fuzzy Inference System (ANFIS), and fuzzy regression analysis. The results showed that the ANFIS performance was more suitable compared to the fuzzy regression models. The sensitivity analysis indicated that the initial concentration of oxidizing peroxydisulfate had the most significant effect on the removal of acid red 14.
RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI
(2022)
Article
Engineering, Civil
M. Taghizadeh, G. Asadollahfardi, A. M. Salehi, J. Akbardoost
Summary: The study confirmed that the use of wash water and steel fiber in concrete may affect the mechanical properties of concrete. While the use of wash water and steel fibers can increase tensile and flexural strength, simultaneous use of both may decrease compressive strength. The maximum tensile and flexural strengths were achieved in concrete samples with 100% wash water and steel fibers, respectively.
AUSTRALIAN JOURNAL OF CIVIL ENGINEERING
(2022)
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)
