Article
Green & Sustainable Science & Technology
Micaela Nicolite, Geovana C. G. Delaqua, Markssuel T. Marvila, Fernando Vernilli, Henry A. Colorado, Carlos M. F. Vieira
Summary: The reuse of industrial waste is crucial for the sustainable development of various sectors. This study focuses on the reuse of waste from the production of electrofused alumina in red ceramics. The results show that the waste can be effectively utilized in the production of red ceramic materials without negatively affecting their properties, making it a viable option for the industry.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Green & Sustainable Science & Technology
Rui Wu, Yue Xiao, Pengfei Zhang, Juntao Lin, Gang Cheng, Zongwu Chen, Rui Yu
Summary: This study synthesized zeolite for asphalt VOCs reduction using red mud and steel slag, and discussed its performance through the study of optimized synthesis conditions. The research results showed that the optimized zeolite can effectively reduce the VOC content in asphalt materials.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Zhuo Liu, Rongxin Guo, Xiao-Yong Wang, Chaoshu Fu, Run-sheng Lin
Summary: In this study, the effect of silica fume, bentonite, and glass powder on the performance of LSRM-based ceramsite was investigated using the response surface method. The optimum doping values were determined as 19.79 wt% for silica fume, 9.28 wt% for bentonite, and 12 wt% for glass powder. The ceramsite achieved the best performance with an apparent density of 1254 kg/m3, water absorption of 3.13%, and particle strength of 13.1 MPa. The formation of aluminosilicate played a positive role in heavy metal fixation and pH reduction, ensuring good environmental performance of the ceramsite.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Construction & Building Technology
Choonghyun Kang, Taewan Kim
Summary: This study aims to develop new applications for seawater desalination brine by using it in the production of high-volume red mud cement. Experiments were conducted to develop and characterize 30 mixtures of red mud, slag, and CaO. The results showed that smaller red mud particles and the addition of CaO significantly improved the strength of the cement. Brine also promoted hydration reaction and the formation of hydration reactants more than freshwater. Therefore, the combination of brine and high-volume red mud slag cement is applicable to the production of non-structural elements and small building components.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Saeed Morsali, Feriha Yildirim
Summary: This study evaluates the environmental impact of using red mud as a partial replacement for cement in concrete production. It shows that using red mud reduces the environmental impacts of concrete and alumina industries and provides a sustainable solution for its disposal problem. The study also highlights the improved durability and strength of concrete with the use of red mud.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Materials Science, Ceramics
Hongcheng Mi, Longsheng Yi, Qian Wu, Jin Xia, Binghang Zhang
Summary: High-strength ceramsite was successfully prepared without any chemical additives through a two-stage sintering process using red mud, fly ash, and bentonite. The optimal synthesis conditions resulted in ceramsite with high compressive strength, low water absorption, and effective solidification of deleterious elements.
CERAMICS INTERNATIONAL
(2021)
Article
Construction & Building Technology
Adriana Cornelia Marsolea (Cristea), Cristina Orbeci, Edina Rusen, Paul Octavian Stanescu, Oana Brincoveanu, Roberta Irodia, Cristian Pirvu, Adrian Dinescu, Constantin Bobirica, Alexandra Mocanu
Summary: The study focused on the synthesis and characterization of composite materials based on polyurethane (PUR) rigid foam reinforced with pyrite and red mud. These materials were used for the retention of mercury ions from contaminated water and as paving stones in construction. Various characterization techniques were employed. The results showed that the composite materials had improved thermal resistance and mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Zhicheng Chen, Xinhong Qiu, Jun Ke, Junwei Wen, Chen Wu, Qianqian Yu
Summary: This study developed a novel activation approach by adding dithionite citrate bicarbonate (DCB) for Bisphenol A (BPA) degradation, which improved the effectiveness of red mud (RM) as a catalytic material for organic pollutants treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Construction & Building Technology
Subhashree Samantasinghar, Suresh Prasad Singh
Summary: Red mud is a highly alkaline waste containing heavy metal ions, and its improper disposal leads to environmental issues. This study evaluates the physical, mechanical, and chemical properties of red mud treated with ground granulated blast furnace slag to determine its suitability for highway construction. Additional doses of alkali activator are used to accelerate the geopolymerization process. The results show that the stabilization of red mud reduces alkalinity and encapsulates heavy metals through geopolymeric reactions. The optimal combinations of slag and alkali can achieve target strengths for different constructions.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Chaoqun Yan, Zhiliang Cheng, Xuan Zhang, Yumei Zhang, Xianghan Chen, Guoquan Zeng, Heng Xu
Summary: An effective catalyst was obtained by hydrogenation heating modification of red mud, which exhibited remarkable catalytic activities in the degradation of levofloxacin. It also showed excellent catalytic stability and could effectively detoxify hexavalent chromium. This research provides an effective means for the reuse of industrial waste and achieves the purpose of treating pollution with wastes.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Physical
Alessio Occhicone, Mira Vukcevic, Ivana Boskovic, Serena Mingione, Claudio Ferone
Summary: The study investigates the use of red mud as a precursor for alkali-activated materials. By combining blast-furnace slag and inert construction sands, mortar samples with low environmental impact are produced. These samples show promising compressive strength values and can serve as alternatives to cement and ceramic materials in the construction industry.
Article
Environmental Sciences
Enio Tarso de Souza Costa, Guilherme Lopes, Geila Santos Carvalho, Henrique Gualberto Vilela Penha, Nilton Curi, Luiz Roberto Guimaraes Guilherme
Summary: This study evaluated the use of red mud and a mixture of red mud with phosphogypsum (RMPG) as amendments to reduce arsenic availability in contaminated soils. The amendments increased pH, EC, and sodium concentration in soils, while decreasing arsenic concentration in leachates and plant tissues. RMPG was found to be particularly advantageous, providing both arsenic reduction and additional nutrients for plant growth.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Xue Zhang, Rong Huang, Yijun Cao, Chongqing Wang
Summary: The innovative strategy of rapid conversion of red mud into soil matrix by cohydrothermal carbonization effectively neutralizes the alkalinity, improves soil properties, and verifies the feasibility and practicality of the process, promoting future application of phytoremediation of red mud at full field scale.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Zhanghao Jiang, Xuejun Quan, Shuai Zhao, Kui Zeng, Hao Chen, Yankuo Zhou
Summary: Using waste acid for dealkalization of red mud was studied, with a leaching ratio of sodium reaching 92.3591% under specific conditions. The residual alkali content in the treated RM was reduced to 0.2674%, meeting the requirements for building materials and providing potential for further development as building material products.
Review
Green & Sustainable Science & Technology
Nathalia C. G. Silveira, Maysa L. F. Martins, Augusto C. S. Bezerra, Fernando G. S. Araujo
Summary: Approximately 120 million tons of red mud is produced globally each year, posing critical environmental challenges due to its high basicity and potential leaching. Industrial solutions consuming large volumes of this material are needed, with potential reuse in metallurgical procedures, building materials, and chemical industry.
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)