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Wu, Haoming (author)Alkali-activated material (AAM) is one of the most attractive alternatives to ordinary Portland cement (OPC). Recently, more and more research interests are devoted to durability performance. In cold areas, freeze-thaw resistance is a crucial durability factor for concrete. However, the understanding of the freeze-thaw resistance of AAMs is...master thesis 2023
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Sun, Yubo (author), Miranda de Lima Junior, L.C. (author), Rossi, Laura (author), Jiao, Dengwu (author), Li, Z. (author), Ye, G. (author), De Schutter, Geert (author)To better understand early stiffening of AAS pastes, distinctive microstructural features by varying the silicate modulus (Ms) have been visualized with in-situ microscopy. In addition, the activation reaction was monitored with multiple approaches, while solid and liquid phases in hydrating AAS were characterized separately. In silicate...journal article 2023
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Li, Z. (author), Chen, Y. (author), Provis, John L. (author), Cizer, Özlem (author), Ye, G. (author)This paper provides a critical review on autogenous shrinkage of alkali-activated slag (AAS). It is reported that AAS paste, mortar, and concrete generally show larger autogenous shrinkage than Portland cement (PC) counterparts. Self-desiccation is the main driving force of the autogenous shrinkage of hardened AAS, but other mechanisms also...review 2023
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Zuo, Yibing (author), Liao, Yishun (author), Ye, G. (author)Thermodynamic parameters of chloride and sulfate intercalated hydrotalcites were deduced. The phase evolutions in alkali‑activated slag cement upon only sodium chloride or only magnesium sulfate attack and combined attack of those two salts were investigated via thermodynamic modelling. Friedel's salt was predicted to form under sodium...journal article 2023
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Liu, C. (author), Liang, X. (author), Chen, Y. (author), Li, Z. (author), Ye, G. (author)In this study, the impacts of tap water immersion on the pore solution, phase assemblages, gel chemistry and structure, and pore structure of alkali-activated slag (AAS) pastes were studied. AAS degrades under such condition and the potential mechanisms can be concluded as lower reaction rates, gel decomposition and carbonation. The leaching...journal article 2023
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Sun, Renjuan (author), Bu, Linglai (author), Zhang, Hongzhi (author), Guan, Yanhua (author), Ma, Chuanyi (author), Ge, Zhi (author), Šavija, B. (author)White mud is a solid waste from the papermaking industry, composed mainly of CaCO<sub>3</sub> and residual alkali metal ions (such as Na+, Mg<sup>2+</sup>). In the current study, the feasibility of using white mud as partial replacement of slag in alkali activated materials is explored. The fluidity, setting time, autogenous shrinkage,...journal article 2023
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Sun, Yubo (author), Ghorbani, Saeid (author), Ye, G. (author), De Schutter, Geert (author)Alkali-activated material (AAM) is developed as a green alternative binder to replace Portland cement (PC) in the construction field. However, the large-scale application with AAM concrete is limited so far, with the insufficient knowledge of rheological behavior being a major obstruct. Thixotropy of concrete is of great interest, which can...book chapter 2023
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Bezemer, H.J. (author), Awasthy, N. (author), Lukovic, M. (author)A promising solution for reducing the carbon footprint of concrete is the use of alkali-activated concretes (AAC). Before this material can be widely applied, its long-term behaviour needs to be understood, especially since some studies reported a decrease of mechanical properties over time. Similarly, Prinsse et al. reported decreasing...book chapter 2023
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Ren, Jie (author), Sun, Hongfang (author), Li, Qun (author), Li, Z. (author), Zhang, Xiaogang (author), Wang, Yanshuai (author), Li, Linfei (author), Xing, Feng (author)In this research, the effects of natural seawater (SW) on the properties of alkali-activated slag/fly ash (AASF) are studied. AASF prepared with deionized water is set as the reference mixture. The results showed that the use of natural SW resulted in a prolonged setting time and lower heat release, but no obvious impact on the flowability of...journal article 2022
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Yin, Kangting (author), Jiang, Yaqing (author), He, Hui (author), Ren, Jie (author), Li, Z. (author)In this paper, fresh (setting and rheology) and hardened properties (strength and shrinkage) of one-part alkali-activated slag (AAS) with and without rice straw ash (RSA) are comprehensively investigated. The reaction kinetics and microstructure of the mixtures are characterized by a series of experimental techniques. The results reveal that...journal article 2022
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Yin, Kangting (author), Jiang, Yaqing (author), Wang, Yu (author), Zhao, Wenhao (author), Pan, Zhenghua (author), Li, Z. (author)One-part alkali-activated slag (AAS) as a binder material has a promising application in the construction industry. The properties of one-part AAS incorporating agricultural wastes have been seldom studied. In this paper, the fresh and hardened properties of one-part AAS with the addition of rice straw powder (RSP) were investigated. The...journal article 2022
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Sun, Yubo (author), Ghorbani, Saeid (author), Dai, Xiaodi (author), Ye, G. (author), De Schutter, Geert (author)This study provides a detailed investigation on the reproducibility of two groups of alkali-activated slag (AAS) mixtures, from both fresh properties and strength development perspectives. Three different commercial sodium silicate solutions and one lab-produced silicate activator (made of silica fume and sodium hydroxide) were used to...journal article 2022
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Li, Jing (author), Yin, Suhong (author), Huang, Haoliang (author), Hu, Jie (author), Yi, Chaofan (author), Chen, Zheng (author), Ma, Yuwei (author), Ye, G. (author)This study is undertaken to explore the relationship between the reaction products and the drying shrinkage of alkali-activated slag (AAS) with the varying hydroxide dosage. AAS pastes were firstly produced with either Al(OH)3 or Mg(OH)2 to investigate the effects of hydroxide on the composition of reaction products and the drying shrinkage of...journal article 2022
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Yang, Zhengxian (author), Shi, Peng (author), Zhang, Yong (author), Li, Z. (author)The influences of liquid-binder ratio and mixing sequence on the performance of superabsorbent polymer (SAP)-containing alkali-activated slag (AAS) mortar are investigated in this study. It is found that the SAP absorbs much less liquid in upper supernatant of AAS than in water. Mixing SAP with liquid first induces a larger absorption...journal article 2022
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Yang, Zhengxian (author), Shi, Peng (author), Zhang, Yong (author), Li, Z. (author)Internal curing by superabsorbent polymer (SAP) has been applied in alkali-activated slag (AAS) systems by a few previous studies with the purpose to mitigate the autogenous shrinkage. However, the effects of SAP on other properties of AAS have been rarely studied. In this paper, the workability, strength, permeability, and frost resistance...journal article 2022
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Mangla, Deepanshu (author)Currently, Ordinary Portland cement (OPC) concrete accounts for the world's 8-10% anthropogenic carbon/ greenhouse (GHG) emissions, where 90-95% of the emissions are due to the production of OPC. A 200% increase in OPC demand is projected by 2050 from 2010 levels. Therefore, it is urgent to reduce these emissions arising from its production....master thesis 2021
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Xu, Zhiyuan (author), Zuo, Yibing (author), Ye, Guang (author)In this work, a numerical model is proposed to study chloride transport in alkali-activated materials. This model is based on multiple-relaxation-time lattice Boltzmann method, where particle distribution function is introduced to simulate the chloride binding and diffusion. This model takes into account diffusion, homogenous reaction between...conference paper 2021
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Tavasoli, S. (author), Breit, W. (author)The effect of type of activator on porosity and CO2 penetration of the alkali activated ground granulated blast furnace slag (GGBS) mortar is an important behavior which is required for designing a durable concrete mixture. This research article investigates the influence of three types of activators consisting of NaOH, Na2.nSiO2 and K2.nSiO2 on...conference paper 2021
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Xu, Z. (author), Zuo, Y. (author), Ye, G. (author)In this work, a numerical model is proposed to study chloride transport in alkali-activated materials. This model is based on multiple-relaxation-time lattice Boltzmann method, where particle distribution function is introduced to simulate the chloride binding and diffusion. This model takes into account diffusion, homogenous reaction between...conference paper 2021
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Zuo, Y. (author), Ye, G. (author)For the first time, this study developed a novel model, named GeoMicro3D, to simulate the reaction process and microstructure formation of alkali-activated slag. The GeoMicro3D model consists of four modules that are designed to simulate, respectively: (i) the initial spatial distribution of real-shape slag particles in alkaline activator, ...journal article 2021
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