Article
Environmental Sciences
Manuel Contreras Llanes, Maximina Romero Perez, Manuel Jesus Gazquez Gonzalez, Juan Pedro Bolivar Raya
Summary: The study showed that using up to 50% of recycled aggregates from construction and demolition waste is feasible for manufacturing eco-friendly concrete, and can also be used to produce paving blocks that meet industrial standards. By reducing cement incorporation, production costs were saved and environmental impact minimized.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Jeonghyun Kim, Anna M. Grabiec, Andrzej Ubysz
Summary: This study evaluates the effects of different recycled concrete materials on the mechanical properties of concrete. The results show that the concrete properties deteriorate with increasing replacement ratio of recycled materials.
Article
Construction & Building Technology
Juan A. Ferriz-Papi, Edward Weekes, Nik Whitehead, Angela Lee
Summary: This paper presents a simple and cost-effective procedure for characterizing recycled aggregates from construction and demolition waste. The procedure, known as Aggregate Potential (Physical) (AP(P)), utilizes tests to evaluate the quality and potential uses of the aggregates, and suggests methods to improve their manufacturing and market application for a more circular economy.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Seweryn Malazdrewicz, Krzysztof Adam Ostrowski, Lukasz Sadowski
Summary: The demolition of old concrete structures is increasing due to technical issues, end of service-life, and modernization plans. This process generates Concrete Construction and Demolition Waste (CC&DW), which is often transported and deposited in landfills if not recycled. Researchers have studied the use of recycled materials from CC&DW in Self-Compacting Concrete (SCC), particularly in the form of Recycled Coarse Aggregate (RCA), as it can significantly reduce waste. However, there is still a lack of complete understanding of the processes involved in SCC with RCA, necessitating further research.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Hung Phong Nguyen, Anette Mueller, Van Tuan Nguyen, Cong Thang Nguyen
Summary: In Vietnam, there has been a recent increase in construction and demolition waste as well as industrial by-products, prompting the need for recycling these materials for sustainable development. Experimental results show that masonry waste and fly ash can successfully produce lightweight aggregates for lightweight concrete, contributing to sustainability in the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Yunpeng Zhao, Dimitrios Goulias, Luca Tefa, Marco Bassani
Summary: The study aims to quantitatively assess the life cycle economic and environmental benefits of using alternative stabilized-CDW aggregates in pavement construction. The results indicate that using CDW aggregate stabilized with CKD can lead to cost savings and environmental benefits, encouraging wider adoption in roadway construction. The analysis approach in this study can be applied to assess the benefits of recycled materials in roadway infrastructure in other locations.
Article
Engineering, Civil
Ana Baricevic, Dragan Kovac, Katarina Didulica
Summary: This study confirmed that by complying with standards for recycled aggregates and knowing their origin, it is possible to produce concrete with properties equivalent to those of ordinary concrete for specified durability conditions.
Article
Green & Sustainable Science & Technology
Mingyuan Zhang, Xiaoli Liu, Lingjie Kong
Summary: This study evaluated the environmental and economic benefits of using CDW to produce RA through life cycle assessment (LCA) and life cycle cost (LCC). The results showed that using CDW to produce RA was feasible and improvements such as selective demolition and mobile production mode, pre-screening of CDW, and opting for electric transportation vehicles could further enhance the carbon and economic benefits.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Zhikun Ding, Wanqi Nie, Huanyu Wu
Summary: This study explored the connection between stakeholders' purchase intention and perceived value of CDWRP, highlighting that perceived value is a key factor affecting purchase intention and is significantly influenced by the environmental, social, and economic values of the recycled products.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Review
Chemistry, Physical
Markssuel Marvila, Paulo de Matos, Erich Rodriguez, Sergio Neves Monteiro, Afonso R. G. de Azevedo
Summary: Construction and demolition activities generate large amounts of waste, requiring the extraction of vast quantities of natural aggregate. By substituting natural aggregate with recycled aggregate from waste, environmental problems can be reduced. While the use of recycled aggregate may slightly decrease concrete performance, this reduction is negligible when replacement levels are below 30%. Efforts should focus on improving the efficiency of recycled aggregate processing and standardization.
Article
Construction & Building Technology
Junhui Zhang, Cheng Li, Le Ding, Jian Li
Summary: This study experimentally investigated the performance of cement-stabilized recycled mixture, revealing that the mechanical properties of cement-stabilized mixtures change with the proportion of recycled aggregate. The conclusion suggests that in road construction, the amount of recycled aggregate should not exceed 50%, and the ratio of crushed brick to recycled concrete aggregate should not exceed 3:7.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Wanchai Yodsudjai, Kirati Nitichote
Summary: This research found that the quality of recycled aggregate waste significantly impacted the behavior of concrete, finer aggregate increased the weakness part of the concrete resulting in lower compressive strength and increased chloride ion penetration.
Article
Green & Sustainable Science & Technology
Salman Shooshtarian, Savindi Caldera, Tayyab Maqsood, Tim Ryley, Peter S. P. Wong, Atiq Zaman
Summary: Growing population and urbanization have led to an increase in construction and demolition waste generation, calling for better waste management methods. Creating and stimulating a market for recycled C&D waste is an intervention aimed at diverting waste from landfills and giving waste materials a second life. This study identifies key factors and barriers affecting the market for C&D recycled waste products in Australia and applies institutional theory to explain stakeholder decisions. The study proposes a Framework for Waste Market Development to overcome current barriers and guide government decision-makers and AEC industry practitioners in promoting end markets for C&D waste, contributing to a circular economy.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Construction & Building Technology
Cuizhen Xue, Hongxia Qiao, Hui Cao, Qiong Feng, Qiong Li
Summary: The characteristics of brick powder particles have a significant impact on the strength of cement mortar, with the strength of mortar being significantly dependent on specific surface area and the fraction of particles smaller than 20 μm. Proper content of brick powder can increase the 28-day strength of cement mortar.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Chemistry, Physical
Evelio Teijon-Lopez-Zuazo, Jorge Lopez-Rebollo, Luis Javier Sanchez-Aparicio, Roberto Garcia-Martin, Diego Gonzalez-Aguilera
Summary: This study investigates different predictive models for estimating the unconfined compressive strength and maximum peak strain of non-structural recycled concretes. The results show that it is possible to accurately estimate the properties of different types of recycled concretes, confirming the impact of ceramic waste on performance.
Article
Multidisciplinary Sciences
Anant Aishwarya Dubey, K. Ravi, Abhijit Mukherjee, Lingaraj Sahoo, Moses Akindele Abiala, Navdeep K. Dhami
Summary: Riverbank erosion is a global issue with significant socio-economic impacts. This study examines the potential of selectively enriched native calcifying bacterial communities to reduce soil erodibility in the Brahmaputra river. The research demonstrates the substantial reduction in soil erosion with the supplementation of calcifying cultures, indicating the significant potential for mitigating erosion.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Asha Latha Ramachandran, Abhijit Mukherjee, Navdeep K. Dhami
Summary: Bacterial biopolymers produced extracellularly have gained significant interest in engineering applications. This study quantifies the mechanical properties of in-situ bacterial biopolymer dextran and reveals their cementation mechanism. The macro-mechanical properties of soils stabilized by bacterially produced biopolymers are comparable to commercial biopolymers. This research provides novel testing methods and applications for in-situ polymers.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Environmental
Anant Aishwarya Dubey, Raja Murugan, K. Ravi, Abhijit Mukherjee, Navdeep K. Dhami
Summary: Biomediated soil improvement has emerged as a promising solution for enhancing soil engineering properties in the past decade. The efficacy of biocementation depends largely on the material properties of the precipitated crystals, which are influenced by the concentration of cementation reagents. In this study, specific microbes were investigated for their biocementation potential at different concentrations of cementation media (CM). The soil strength improvement was evaluated through a needle penetration test, and the biochemical properties of the microbes were analyzed to understand the reasons behind the variation in penetration resistance. The findings suggest that the concentration of CM plays a significant role in the response of microbes, and the morphology, texture, and quantity of precipitated CaCO3 crystals are important factors influencing the strength of the biocemented soil.
JOURNAL OF HAZARDOUS TOXIC AND RADIOACTIVE WASTE
(2022)
Article
Computer Science, Interdisciplinary Applications
Aparna Harichandran, Benny Raphael, Abhijit Mukherjee
Summary: This study proposes a framework called hybrid unsupervised and supervised machine learning (HUS-ML) for equipment activity recognition and fault detection. The framework identifies normal operations and known faulty conditions through supervised learning, and utilizes an anomaly detection algorithm to spot unseen faulty conditions. Experimental results demonstrate the superiority of HUS-ML in activity recognition and fault detection, with successful identification of known and unseen faulty operations.
COMPUTER-AIDED CIVIL AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Engineering, Mechanical
Atri Nath, Sudhirkumar Barai, Kalyan Kumar Ray
Summary: This study examines a methodology that combines Chaboche's CIKH model and genetic algorithm optimization technique to simulate the cyclic-plastic response of materials exhibiting cyclic hardening or softening behavior. The results demonstrate the accuracy of this approach in predicting the experimental results for various materials and its comparability with existing predictions, validating its applicability.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Engineering, Geological
Anant Aishwarya Dubey, Jack Hooper-Lewis, K. Ravi, Navdeep Kaur Dhami, Abhijit Mukherjee
Summary: The increased occurrence of extreme weather events has raised global concerns about the conservation of riverbanks and coastlines. This study explores the erosion characteristics of soil treated with microbially induced calcite precipitation (MICP) and investigates the effectiveness of biopolymer composite treatment in improving soil resilience against erosion.
Article
Construction & Building Technology
Abhijit Mistri, Navdeep Dhami, Sriman Kumar Bhattacharyya, Sudhirkumar Barai, Abhijit Mukherjee
Summary: Reutilising construction and demolition waste as aggregate in concrete is sustainable and prevents depletion of natural resources. Bio-treatment of recycled coarse aggregate has been shown to improve the drawbacks caused by attached mortar, and is more cost-effective than conventional cement slurry treatment.
MATERIALS AND STRUCTURES
(2022)
Article
Construction & Building Technology
Priyadarshini Das, Venkata Ravi Sankar Cheela, Abhijit Mistri, Sushanta Chakraborty, Brajesh Dubey, Sudhirkumar V. Barai
Summary: This paper investigates the techno-environmental sustainability of concrete utilizing ferrochrome slag and fly ash. The results show that by adopting an optimized mix design method, concrete with better performance and environmental savings can be achieved. Sensitivity analysis reveals that the studied concrete mix design is not sensitive to transportation distance, mode of transport, and energy mix.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yikuan Wang, Abhijit Mukherjee, Arnaud Castel
Summary: This paper proposes a combined electrochemical and ultrasonic method for monitoring incipient corrosion in reinforced concrete (RC), and experimental corrosion was induced by accelerated chloride. Through the use of four monitoring techniques and the analysis of results, the progression of corrosion and concrete cracking can be successfully identified and traced.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Abhijit Mistri, Navdeep Dhami, Sriman Kumar Bhattacharyya, Sudhirkumar Barai, Abhijit Mukherjee
Summary: The variable quality of recycled coarse aggregate (RCA), especially the attached mortars leading to weak interfaces, is a major drawback. This study investigates the strengthening of RCA using biocement treatment and compares it with conventional cement slurry treatment. The effects of the treatments on water absorption and mechanical properties of the aggregates are recorded. A novel method of fabricating concrete cubes with one aggregate is developed to study the concrete-aggregate interface. Advanced monitoring techniques are used to record damage evolution at the interfaces. Microstructural behavior and elemental composition in the interface are also recorded. The test results show that biocement treatment reduces the water absorption of RCA by about 71%. Microstructural study demonstrates that biocement can penetrate the porous interfacial mortar within RCA and densify it due to its low viscosity. The micromechanical properties using nanoindentation provide more insights into improving interfacial transition zones. The treatment improves the aggregates to a level where they can replace natural aggregates without compromising performance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Environmental
Abhijit Mistri, Venkata Ravi Sankar Cheela, Brajesh Kumar Dubey, Navdeep Dhami, Sriman Kumar Bhattacharyya, Abhijit Mukherjee, Sudhirkumar Barai
Summary: This article compares the environmental impacts of different treatment methods on recycled coarse aggregate (RCA) and aims to find the most suitable method with minimum impacts.
WASTE MANAGEMENT & RESEARCH
(2023)
Article
Construction & Building Technology
Yikuan Wang, Abhijit Mukherjee, Arnaud Castel
Summary: This study proposes a non-destructive method based on guided ultrasonic waves to monitor corrosion in reinforced concrete with top-bar defect. Through accelerated corrosion experiments and monitoring with guided ultrasonics, the research reveals that top-bar defect significantly influences the corrosion process, and specimens with defects have a significant loss of strength after corrosion exposure.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Construction & Building Technology
Nimrat Pal Kaur, Yikuan Wang, Navdeep Kaur Dhami, Abhijit Mukherjee
Summary: Bacterial biocementation has the ability to heal cracks in concrete, but there is a concern about the potential corrosion caused by the materials used. This paper examines the performance of bacterially healed reinforced concrete when exposed to chloride-induced corrosion. Different calcium sources were used for the healing process, and electrochemical techniques and ultrasonic-guided waves were used to assess the state of corrosion. The study found that the presence of electrolytes in the healing fluid affected the electrochemical measurements and gave misleading results, but the ultrasonic-guided waves method provided an accurate assessment of corrosion.
JOURNAL OF MATERIALS IN CIVIL 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)