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Chen, B. (author), Perumal, Priyadharshini (author), Aghabeyk, F. (author), Adediran, Adeolu (author), Illikainen, Mirja (author), Ye, G. (author)The pursuit of low-carbon binders as alternatives to Portland cement has sparked interest in developing alkali-activated materials (AAM).<sup>1</sup> Using municipal solid waste incineration (MSWI) bottom ash as precursor for AAM has attracted increasing attention as it offers a sustainable, resource-efficient solution to mitigate the...review 2024
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Chen, B. (author)In recent years, considerable attention has been given to the utilization of municipal solid waste incineration (MSWI) bottom ash as a mineral resource for construction materials. MSWI bottom ash is the primary residue discharged after incinerating municipal solid waste. The generation of MSWI bottom ash is increasing dramatically with the wide...doctoral thesis 2023
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Chen, B. (author), Perumal, Priyadharshini (author), Illikainen, Mirja (author), Ye, G. (author)In recent years, the widespread application of waste incineration technology has led to an increased generation of municipal solid waste incineration (MSWI) bottom ash. There is growing interest in the use of MSWI bottom ash as a mineral resource to produce construction materials. The utilization potential of MSWI bottom ash is determined by...review 2023
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Gluth, Gregor J.G. (author), Ke, Xinyuan (author), Vollpracht, Anya (author), Weiler, Lia (author), Bernal, Susan A. (author), Cyr, Martin (author), Dombrowski-Daube, Katja (author), Geddes, Dan (author), Nedeljković, Marija (author)The current ability to predict the carbonation resistance of alkali-activated materials (AAMs) is incomplete, partly because of widely varying AAM chemistries and variable testing conditions. To identify general correlations between mix design parameters and the carbonation rate of AAMs, RILEM TC 281-CCC Working Group 6 compiled and analysed...book chapter 2023
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Chen, B. (author), Zuo, Yibing (author), Zhang, Shizhe (author), Miranda de Lima Junior, L.C. (author), Liang, X. (author), Chen, Y. (author), van Zijl, Marc Brito (author), Ye, G. (author)This work evaluated the reactivity and leaching potential of municipal solid waste incineration (MSWI) bottom ash as supplementary cementitious material (SCM) and precursor for alkali-activated materials (AAM). The chemical composition of the amorphous phase in MSWI bottom ash was found to be in the same range as that of Class F coal fly ash....journal article 2023
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Gluth, Gregor J.G. (author), Ke, Xinyuan (author), Vollpracht, Anya (author), Bernal, Susan A. (author), Cizer, Özlem (author), Cyr, Martin (author), Dombrowski-Daube, Katja (author), Geddes, Dan (author), Nedeljković, Marija (author)The current understanding of the carbonation of alkali-activated concretes is hampered inter alia by the wide range of binder chemistries used. To overcome some of the limitations of individual studies and to identify general correlations between their mix design parameters and carbonation resistance, the RILEM TC 281-CCC working group 6...book chapter 2023
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Zhang, Shizhe (author)Alkali-activated Materials (AAMs), including those classified as geopolymer, are obtained through the reaction between a solid precursor and an alkaline solution. Compared with ordinary Portland cement (OPC) binders, these materials maintain comparable mechanical properties but have the advantage of reducing greenhouse gas emissions and...doctoral thesis 2022
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Yang, Tingli (author), Fan, Xiaochun (author), Gao, Xu (author), Gu, Qian (author), Xu, S. (author), Shui, Zhonghe (author)In this study, a modified alkali activated slag system is designed by introducing additional calcium and aluminum containing phases in the binder, aiming at promote the formation of Friedel's salt (Fs) within the reaction products and therefore achieve a better chloride binding capacity. The effect of calcium and alumina contents on phase...journal article 2022
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Gluth, Gregor J.G. (author), Ke, Xinyuan (author), Vollpracht, Anya (author), Weiler, Lia (author), Bernal, Susan A. (author), Dombrowski-Daube, Katja (author), Geddes, Daniel A. (author), Grengg, Cyrill (author), Nedeljković, Marija (author)The current understanding of the carbonation and the prediction of the carbonation rate of alkali-activated concretes is complicated inter alia by the wide range of binder chemistries used and testing conditions adopted. To overcome some of the limitations of individual studies and to identify general correlations between mix design...journal article 2022
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Sun, Yubo (author), Zhang, Shizhe (author), Rahul, A. V. (author), Tao, Yaxin (author), Van Bockstaele, Filip (author), Dewettinck, Koen (author), Ye, G. (author), De Schutter, Geert (author)This study aims to interpret the early-stage rheology of alkali-activated slag (AAS) paste from microstructure perspectives. The microstructures visualized by cryogenic scanning electron microscopy (cryo-SEM) revealed the essential distinction between hydroxide and silicate-activated slag pastes. The hydroxide-based mixture showed typical...journal article 2022
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Wang, Yi (author), Zhang, Mingzhong (author)Strain hardening geopolymer composites (SHGC) as a tailored group of fibre reinforced geopolymer composites are featured by large tensile strain capacity with multiple micro-cracks. This paper experimentally investigates the strain hardening behaviour of SHGC in terms of flexural stress-deflection response, failure mode and cracking, flexural...conference paper 2021
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Delsaute, B. (author), Gambacorta, J. (author), Staquet, S. (author)Blended pastes composed of slag and fly ash (ratio 50:50) are used with sodium hydroxide and sodium silicate as precursors. Each composition has the same solution to binder ratio (S/B) and the Ms-modulus varies between 1.04 and 1.58. All the experiments were conducted at a constant temperature of 20°C. The physical mechanisms related to the...conference paper 2021
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Krajnović, Ivana (author), Matthys, Stijn (author)Repair mortars are costly materials with high level of Portland cement and various additives which questions their eco-efficiency. In this respect, cement free material solutions such as alkali-activated mortars based on ground granulated blast furnace slag (BFS) are gaining interest for structural repair. The aim of this research is to study...conference paper 2021
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Nguyen, Thi Nhan (author), Phung, Quoc Tri (author), Frederickx, Lander (author), Jacques, Diederik (author), Dauzeres, Alexandre (author), Elsen, Jan (author), Pontikes, Yiannis (author)This work investigates the water permeability of alkali-activated materials (AAMs), which is one of the key transport properties beside the diffusivity to assess the material durability. The AAMs were produced from granulate blast furnaces slag (BFS) and metakaolin (MK) with various water/binder ratios of 0.35, 0.45, 0.55, and 0.75, 0.85, 0.95...conference paper 2021
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Li, Z. (author)Alkali-activated materials (AAMs), as eco-friendly alternatives to Ordinary Portland cement (OPC), have attracted increasing attention of researchers in the past decades. Unlike cement, which requires calcination of limestone, AAMs can be made from industrial by-products, or even wastes, with the use of alkali-activator. The production of AAMs...doctoral thesis 2021
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Zhang, Shizhe (author), Duque-Redondo, Eduardo (author), Kostiuchenko, A. (author), Sanchez Dolado, J. (author), Ye, G. (author)This paper aims to study the adhesion mechanism of polyvinyl alcohol (PVA) fiber within alkali-activated slag/fly ash (AASF) matrix using molecular dynamics (MD) simulation in combination with systematic experimental characterization. The adhesion of PVA to C-(N-)A-S-H gel with different Ca/(Si+Al) and Al/Si ratios was modeled using MD...journal article 2021
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Li, Z. (author), Liang, X. (author), Chen, Y. (author), Ye, G. (author)The high autogenous shrinkage of alkali-activated materials made from slag and fly ash is recognised as a major drawback with regard to the use as construction materials. In this study, metakaolin was introduced into the alkali-activated slag-fly ash (AASF) paste to mitigate the autogenous shrinkage. The shrinkage mitigation mechanism of...journal article 2021
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Nedeljković, Marija (author), Ghiassi, Bahman (author), Ye, G. (author)Understanding the role of curing conditions on the microstructure and phase chemistry of alkali-activated materials (AAMs) is essential for the evaluation of the long-term performance as well as the optimization of the processing methods for achieving more durable AAMs-based concretes. However, this information cannot be obtained with the...journal article 2021
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Li, Z. (author), Zhang, Shizhe (author), Liang, X. (author), Kostiuchenko, A. (author), Ye, G. (author)Alkali activated concrete (AAC) has not received broader industry acceptance, one reason of which lies in the uncertainties in the durability against shrinkage and potential cracking. Many studies reported that AAC exhibit larger autogenous shrinkage than OPC concrete. However, it is unable to deduce that AAC should show higher cracking...book chapter 2021
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Li, Z. (author), Zhang, Shizhe (author), Liang, X. (author), Ye, G. (author)This study aims to investigate the cracking potential of alkali-activated slag (AAS) and alkali-activated slag-fly ash (AASF) concrete subjected to restrained autogenous shrinkage. Temperature Stress Testing Machine (TSTM) is utilized, for the first time, to monitor the stress evolution and to measure the cracking time of alkali-activated...journal article 2020
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