Article
Materials Science, Multidisciplinary
Feihan Jia, Hao Sun, Linyu Yu, Xiaolei Lu, Yiming Zhou, Mohamed Elchalakani, Peng Du
Summary: The preparation of ferrite-rich sulfoaluminate cement using red mud and desulfurization gypsum is feasible and can exhibit rapid mechanical strength development in the early and continuous development in the later stage.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Environmental
Xianrong Zheng, Guangyuan Tian, Yongjia Li
Summary: Cu modified red mud-fly ash sorbent (CuRMFA) prepared by hydration impregnation method can effectively remove SO2 from coal-fired flue gas. The removal of SO2 is mainly through chemical reaction, resulting in SO42- as the desulfurized product. The conversion of Cu+ to Cu2+ enhances the adsorption oxygen conversion and catalytic oxidation performance, playing an important role in improving the desulfurization efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Engineering, Environmental
Shuai Liu, Zewei Liu, Hengxi Zhu, Zixuan Wang, Junjiang Guo, Xiaoyue Zhang, Hongxin Yu, Xiangdong Yue, Ping Ning, Bin Li
Summary: This paper is a review of the role of red mud in flue gas desulfurization and denitrification. It compares new technologies with traditional ones and summarizes the characteristics, advantages, and disadvantages of new technologies, providing a foundation for their large-scale application. The review also gives suggestions for future research on red mud utilization, desulfurization technology, and denitration technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Yaguang Wang, Xiaoming Liu, Xiang Zhu, Wenxi Zhu, Jianwei Yue
Summary: The use of industrial solid waste to prepare cementitious materials can help solve pollution, reduce carbon emissions, and achieve sustainable development. This study investigated the synergistic effect of red mud, desulfurization gypsum, and fly ash on the mechanical performances and hydration products of cementitious materials. The results showed significant improvement in the mechanical performances of cementitious materials under the synergistic effect of the three solid wastes.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Yong Wan, Xinminnan Hui, Xingxing He, Jiangshan Li, Jianfei Xue, Dianzhi Feng, Xiaoli Liu, Shiquan Wang
Summary: This study aims to develop a green binder using FGDG and FA from coal-fired power plants in a sustainable way. The results show that the addition of FGDG can decrease the initial setting time and water absorption of the blended paste, and improve the early strength. The maximum compressive strength of the blended paste is achieved when the dosages of FA and cement are the same. Micro-analysis reveals the presence of C-S-H gels and ettringite, which greatly enhance the water resistance of the binder.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Danying Gao, Zhenqing Zhang, Yang Meng, Jiyu Tang, Lin Yang
Summary: The research shows that the addition of FGDG can promote the hydration and improve the mechanical strength of CSAC-GGBFS mixture, but the content of FGDG should not exceed 6%.
Article
Construction & Building Technology
Chenzhi Li, Linhua Jiang
Summary: The study showed that adding FGD gypsum decreases the critical chloride content for rebar depassivation in fly ash concrete. XRD analysis and MIP results indicated that adding FGD gypsum facilitates the formation of ettringite phase, increasing the solid volume of hydrates and decreasing the critical pore diameter to restrain chloride transport.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Junge Zhu, Hongzhi Yue, Laijun Ma, Zichao Li, Rong Bai
Summary: By adding different solid waste additives, the hydration mechanisms, mechanical properties, and environmental safety of RM-based cementitious materials can be improved. The samples prepared from different solid waste materials and RM formed similar hydration products, and met the single flexural strength criterion for first-grade pavement brick. The alkali substances in the samples existed stably, and the leaching concentrations of heavy metals reached class III of the surface water environmental quality standards. The results demonstrate that RM-based cementitious materials have the characteristics of environmentally friendly materials and have the potential to replace traditional cement in engineering and construction applications, providing innovative guidance for the combined utilization of multi-solid waste materials and RM resources.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Qing Guo, Min Chen, Junhong Zhang, Lihua Gao, Lei Xu
Summary: This paper proposes an efficient and low-cost desulfurization and denitrification adsorption technology using microwave-assisted fly ash and carbide slag as adsorbents. The effect of various parameters on the removal of SO2 and NO is investigated. Optimized preparation and adsorption conditions achieve high removal rates and adsorption capacities.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Environmental Sciences
Sen Liu, Wei Liu, Fen Jiao, Wenqing Qin, Congren Yang
Summary: This article reviews the production and beneficial utilizations of FGD gypsum in China, where the government has implemented numerous desulfurization measures since 2006 to address serious SO2 emissions. With production exceeding 108 tons and continually increasing energy consumption, the properties and applications of FGD gypsum are summarized here.
ENVIRONMENTAL POLLUTION
(2021)
Article
Construction & Building Technology
Zhengning Sun, Xianjun Tan, Weizhong Chen, Ru Mu
Summary: This study investigated the chemical shrinkage of FCSA clinkers with gypsum after 28 days of hydration, revealing the influence of gypsum content on hydration products and chemical shrinkage.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Dedan Duan, Hongqiang Liao, Fang Wei, Jiana Wang, Jianfang Wu, Fangqin Cheng
Summary: This study investigates the hydration characteristics, performance, and economic feasibility of inorganic cementitious materials prepared using circulating fluidized bed fly ash, carbide slag, and flue-gas-desulfurization gypsum. The ternary cementitious system exhibits higher compressive strength and shows promising practical applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Chemical
Bing Bai, Fan Bai, Qingke Nie, Xiangxin Jia
Summary: In response to the requirement for comprehensive utilization of industrial waste, high-strength geopolymers were prepared from red mud and fly ash. Increasing curing temperature and maintaining humidity during curing were found to enhance the strength of the geopolymer. The use of sodium hydroxide solution improved strength, but excessive concentration caused efflorescence. Strength of the geopolymer increased with the concentration of the mixed solution composed of sodium hydroxide solution and water glass.
Article
Engineering, Environmental
Raghavendra Ragipani, Eleanor Escobar, Dale Prentice, Steven Bustillos, Dante Simonetti, Gaurav Sant, Bu Wang
Summary: The high-sulfur fly ash residues from semi-dry flue gas desulfurization units in coal-fired power plants are not suitable for concrete production as supplementary cementitious material (SCM) or carbon dioxide utilization. However, this study successfully demonstrated the upcycling of a spray dry absorber ash into concrete-SCM through selective sulfur removal using weak acid dissolution. Experimental results showed that parametric studies varying liquid-to-solid ratio, acidity, and CO2 pressure can effectively remove sulfur from the ash and meet SCM standards.
Article
Green & Sustainable Science & Technology
Wen Li, Wenxiang Wang, Dongqi Wu, Shanshan Yang, Hongsheng Fang, Shuiyu Sun
Summary: In this study, red mud was used as an additive to effectively stabilize heavy metals in municipal solid waste incineration fly ash (FA). The addition of red mud significantly reduced the leaching of Pb, Cr, and Zn from FA. It was found that the formation of new phases facilitated the solidification of heavy metals. This research provides a good method for the effective stabilization of heavy metals in FA and offers a new perspective on the reuse of red mud.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Ceramics
S. T. Erdogan
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2015)
Article
Construction & Building Technology
Murat Sahin, Mahdi Mahyar, Sinan T. Erdogan
CONSTRUCTION AND BUILDING MATERIALS
(2016)
Article
Construction & Building Technology
S. T. Erdogan
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2016)
Article
Construction & Building Technology
Mandi Mahyar, Sinan Turhan Erdogan, Mustafa Tokyay
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
Murat Sahin, Sinan Turhan Erdogan, Ozgur Bayer
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Construction & Building Technology
M. Kemal Ardoga, Sinan T. Erdogan, Mustafa Tokyay
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Construction & Building Technology
Aykut Bilginer, Ogulcan Canbek, Sinan Turhan Erdogan
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2020)
Article
Construction & Building Technology
Ogulcan Canbek, Sinan T. Erdogan
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Kemal Sengul, Sinan T. Erdogan
Summary: Calcium aluminate cement concretes are known for their rapid strength development and resistance to high temperatures, sulfates, and acids. However, they face challenges of high cost and strength loss due to conversion of hydration products. Natural pozzolans like ground perlite can be used to replace part of CAC, reducing strength loss and cost.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Baki Aykut Bilginer, Sinan T. Erdogan
Summary: The study found that factors like magnesium-to-phosphate ratio and water-to-binder ratio have significant effects on setting time and early strength of MKPC pastes, while the addition of borax, fly ash, and sand does not significantly alter the mineralogy of hydrated pastes.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
B. A. Bilginer, S. T. Erdogan
Summary: Magnesium oxalate cement is a promising alternative to portland cement that can be synthesized at room temperature. By replacing magnesium oxide with granulated blast furnace slag, the properties of oxalate cement can be improved. The combination of deadburned magnesia and slag achieves the highest strength, neutral pH, and excellent water resistance.
MATERIALES DE CONSTRUCCION
(2023)
Article
Construction & Building Technology
Sahra Shakouri, Ozgur Bayer, Sinan T. Erdogan
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Sinan T. Erdogan, Tumay C. Kocak
CONSTRUCTION AND BUILDING MATERIALS
(2017)
Article
Construction & Building Technology
S. T. Erdogan, A. M. Forster, P. E. Stutzman, E. J. Garboczi
CEMENT & CONCRETE COMPOSITES
(2017)
Article
Construction & Building Technology
Diego J. De Souza, Leandro F. M. Sanchez, Juarez Hoppe Filho, Marcelo H. F. Medeiros
Summary: This paper evaluates the physical and chemical properties of mortar mixtures with different binders and exposed to different sulphate solutions. A theoretical approach to describe the susceptibility of cementitious mixtures against sulphate attack is proposed. The results show that the amount of portlandite and the potential of ettringite formation are well correlated with the expansion and damage caused by sulphate attack.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Yu Chen, Hossein Rahmani, Erik Schlangen, Og uzhan Copurog
Summary: This study presents a method to accelerate the production of limestone-calcined clay-based cementitious materials using Ca(NO3)2 solution in 3D printing, and investigates the effects of adding Ca(NO3)2 solution on the material's properties. The results show that adding Ca(NO3)2 solution can improve buildability, accelerate initial setting, and increase compressive strength.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jing Xu, Xianzhi Wang, Wu Yao, Qing Chen, Hehua Zhu, Surendra P. Shah
Summary: Concrete cracks in marine engineering are caused by the hostile seawater environment, leading to serious deterioration of infrastructures. Microbial induced carbonate precipitation (MICP) is an effective and environmentally friendly approach for self-healing of concrete cracks. However, the formation and structure of MICP products for crack healing in seawater are still unclear, which hinders the application of MICP in marine structures.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhenbo Wang, Peng Sun, Yurun Fan, Yudong Han, Yudong Hu
Summary: This study investigates the potential use of engineered cementitious composites (ECCs) with strain-hardening and self-healing characteristics as a cover material in wet coral sand exposure. The results show that ECCs can effectively close cracks, reduce water permeability, and restore the load-carrying capacity of structures. Additionally, lower strain levels are associated with decreased rebar corrosion.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhengxian Yang, Xiaoli Xiong, Kang Li, Bruno Briseghella, Giuseppe Carlo Marano, Shanghong Chen
Summary: This study investigates the long-term volume stability and strength development of engineered cementitious composites (ECC) containing high-volume steel slag (SS). It is found that the strength of ECC with SS starts to decline after 90 days, while the decline is more significant compared to the matrix. The expansion of SS reduces the fracture toughness of the matrix, leading to an increase in toughness and ductility of the ECC. The introduction of ground granulated blast furnace slag (GGBFS) and PVA fibers can reduce the volume expansion and strength loss caused by SS expansion.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Bin Xi, Zhewen Huang, Salam Al-Obaidi, Liberato Ferrara
Summary: This study investigates the self-healing capabilities of Ultra-High Performance Concrete (UHPC) under the combined influence of mechanical and environmental factors. The results reveal that UHPC with narrow cracks exhibits a higher degree of self-healing, especially when exposed to tap water. Furthermore, prolonged exposure mitigates the inhibitory effect of aggressive ions on self-healing.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Zhichao Xu, Huayang Sun, Yanlin Huo, Minjie Jia, Zhitao Chen, Yingzi Yang
Summary: In this study, MXene was used to modify the surface of polyethylene fiber, improving the interfacial properties and tensile properties of strain hardening cementitious composites. The MXene-coated fiber showed increased tensile stress and strain, reduced crack width and spacing, and enhanced frictional bond strength between the fiber and matrix.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Bao Lu, Yeqiang Zhou, Lei Jiang, Zhensen Liu, Guihua Hou
Summary: This study investigated the leaching rate of Ca2+ from magnesium slag (MS) and developed a leaching-carbonation method to convert MS into high-purity vaterite and supplementary cementitious materials. The wet carbonation process with glycine as a crystal modifier successfully produced spherical vaterite with high purity and surface area. The leachate solid residue (LSR) obtained from the leaching process of MS showed a smaller size destruction and higher surface area compared to Portland cement, leading to accelerated hydration process and improved compressive strength and pore structure development. This work provides a novel treatment method for MS and enables its high value-added utilization.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Gustavo Henrique Nalon, Jose Carlos Lopes Ribeiro, Leonardo Goncalves Pedroti, Roberto Marcio da Silva, Eduardo Nery Duarte de Araujo, Gustavo Emilio Soares de Lima
Summary: The mechanical behavior of mortar joints is crucial for masonry's structural performance. This study investigated the effects of different lime/cement ratios and carbon black nanoparticles content on the properties of mortars. The results showed that increasing lime content decreased mortar strength but increased self-sensing properties at the end of the percolation zone.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Yifei Wang, Lei Lei, Caijun Shi
Summary: The effects of DEIPA and EDIPA at dosages of 0.02% and 0.05% on the hydration and strength development of cement-fly ash-limestone ternary blend were investigated. It was found that both dosages of DEIPA and EDIPA promote the chemical effect of limestone and the hydration of aluminates from cement and fly ash. The hydration of silicates was accelerated by 0.02% of DEIPA or EDIPA but delayed by 0.05% due to excessive aluminates hydration. DEIPA and EDIPA also refine the pore structure and increase compressive strength of the blend mortar.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Du Pan, Ditao Niu, Zongjin Li
Summary: A thick-walled cylinder model was developed in this study to analyze the cracking behavior of seawater sea-sand concrete (SSC) cover. Damage variables were introduced to determine the extent of damage for each cracked ring, and a predictive model for the cracking time of SSC cover was established. The accuracy of the model was verified using the Digital Image Correlation (DIC) technique.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jiangyu Wu, Hong S. Wong, Hao Zhang, Qian Yin, Hongwen Jing, Dan Ma
Summary: This study explores a method of strengthening cemented rockfill by using well-graded gangue and partially replacing Portland cement with fly ash and a premixed low-alkalinity activator. The research investigated the effects of activator dosage and curing time on the mechanical properties, composition, and microstructure of cemented rockfill. Results show improved performance with low cement content and the use of a low-cost activator. The addition of premixed activator to fly ash enhanced the formation of specific minerals and caused densification of the microstructure. The study reveals an effective and low-cost method for recycling mining wastes and reducing cement.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Juntao Dang, Xiaosong Tang, Jianzhuang Xiao, Aihong Han
Summary: This study proposes a solution to improve the fresh stability and thermal insulation of alkali-activated foamed concrete by adding recycled brick powder. The study investigates the effects of activator modulus and Na2O concentration on the properties of alkali-activated foamed concrete with different bases. The presence of alkaline activator negatively affects the foamability and foam stability, but adjusting the activator concentration can achieve shorter initial setting time and higher fluidity loss. In addition, the increased activator concentration resulted in changes in the pore structure of the foamed concrete.
CEMENT & CONCRETE COMPOSITES
(2024)
Article
Construction & Building Technology
Jiandong Zuo, Bo Wu, Biqin Dong, Feng Xing, Jun Ma, Guanqi Wei
Summary: Nitrite ion intercalated Ca-Al and Mg-Al layered double hydroxides (LDHs) were successfully synthesized using two modified methods. The Ca-Al LDH synthesized by hydrothermal method (H-C-LDH) exhibited the best properties. The intercalated LDHs improved the mechanical properties, chloride penetration resistance, and permeability resistance of cement mortars without affecting the fluidity. Additionally, the intercalated LDHs provided better corrosion resistance.
CEMENT & CONCRETE COMPOSITES
(2024)
Review
Construction & Building Technology
Jingbin Yang, Zhenping Sun, Nele De Belie, Didier Snoeck
Summary: This review paper provides an overview of internal curing mechanism, common internal curing agents, and the most promising agent-superabsorbent polymers in alkali-activated materials (AAM) systems. The introduction of voids by internal curing agents typically has a negative impact on mechanical properties, but continuous water release during internal curing counteracts this effect by promoting hydration. While the effect of internal curing in reducing autogenous shrinkage of AAM systems has been well-established, the impact on drying shrinkage varies widely in different studies.
CEMENT & CONCRETE COMPOSITES
(2024)