Searched for: subject%3A%22leaching%22
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Liu, C. (author), Li, Zhenming (author), Nie, Shuai (author), Skibsted, Jørgen (author), Ye, G. (author)
Calcium sodium aluminosilicate hydrate C-(N-)A-S-H gels, formed through the alkali-activation of calcium silicate-based materials, may exhibit greater susceptibility to aqueous environments when compared to traditional C-(A-)S-H phases formed by hydration of blended Portland cements. This study investigates structural changes in synthesized C...
journal article 2024
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Nativio, A. (author), Jovanovic, O. (author), van der Hoek, J.P. (author), Kapelan, Z. (author)
The concept of circular economy, aiming at increasing the sustainability of products and services in the water and other sectors, is gaining momentum worldwide. Driven by this concept, novel bio-composite materials produced by recovering resources from different parts of the water cycle are now manufactured in The Netherlands. The new materials...
journal article 2024
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)
Crystallisation due to commonly occurring salts like sodium chloride (NaCl) is a known cause of damage in the built environment. Use of crystallisation inhibitors is a potential solution to reduce salt decay in building materials. Researchers have reported lower damage when sodium ferrocyanide (NaFeCN), a known NaCl crystallisation inhibitor, is...
abstract 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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Zhao, Yingliang (author), Sun, Yong (author), Guo, Z. (author), Sun, Xiaogang (author), Qiu, Jingping (author)
The aim of this study was to improve the immobilization capacity of a binder prepared from As-containing biohydrometallurgy waste (BAW) on arsenic (As) by modifying it with halloysite nanotubes (HNTs) and biochar (BC). The study investigated the influence of HNTs and BC on the chemical fractions and leaching characteristics of As, as well as...
journal article 2023
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Zhao, Lingqin (author), Zhang, Dongming (author), Hu, Yanjun (author), Guo, Qianqian (author), Jiao, Long (author), Zhou, Nan (author), Di Maio, F. (author)
The bottom ash is increasingly used as a substitute aggregate material in road construction in China, and road salting is the major salt source in groundwater. Continuous rainfall releases soluble salts from the bottom ash subgrade into the surrounding soil and groundwater, resulting in potential hazards. Different methods were employed to...
journal article 2023
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)
This paper investigates the leaching behaviour of sodium ferrocyanide, a known crystallisation inhibitor of sodium chloride, which is added to mortars for mitigation of salt decay. Leaching and depletion of the inhibitor is a practical performance related issue that might over time, make the inhibitor less effective against salt decay. In...
journal article 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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Liu, Qing feng (author), Shen, Xiao-han (author), Šavija, B. (author), Meng, Zhaozheng (author), Tsang, Daniel C.W. (author), Sepasgozar, Samad (author), Schlangen, E. (author)
In circumstances with wastewater and seawater, the behavior of multi-ions including calcium, chloride and others in concrete attracts attention. The present study investigated the multiple mechanisms that could happen under the special field situation above, including calcium leaching, chloride transport and multi-ion coupling. To realize the...
journal article 2023
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Zhuang, Linzhou (author), Li, Zhiheng (author), Li, Mengran (author), Tao, Haolan (author), Mao, Xin (author), Lian, Cheng (author), Ge, Lei (author), Du, Aijun (author), Xu, Zhi (author)
The highly efficient and stable electrolysis needs the rational control of the catalytically active interface during the reactions. Here we report a new operando surface restructuring pathway activated by pairing catalyst and electrolyte ions. Using SrCoO<sub>3-δ</sub>-based perovskites as model catalysts, we unveil the critical role of...
journal article 2023
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Tiesma, Menno (author)
Leaching of phosphorus (P) from agricultural land is an important source of eutrophication in the Bollenstreek in the Netherlands. This is because floriculture has led to high P concentrations in the sandy soils with low organic carbon content, which are characterised by a low retention capacity for P. In this study, P concentrations in...
master thesis 2022
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Zhu, Yonghao (author), Hu, Yanjun (author), Guo, Qianqian (author), Zhao, Lingqin (author), Li, Lianming (author), Wang, Y. (author), Hu, Guixiang (author), Wibowo, Haryo (author), Di Maio, F. (author)
One of the main challenges of bottom ash reutilization is heavy metal and salts' leaching potential. The effect of wet treatment on chemical composition and leaching toxicity of bottom ash were investigated in this study to mitigate this leaching potential. Batch leaching and column leaching tests were first conducted to investigate the...
journal article 2022
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Wu, Xiao Min (author), Xie, Fei (author), Yao, Yong Lin (author), Sun, Yue (author), Hua, Zhong Sheng (author), Zhao, Zhuo (author), Yang, Y. (author)
In order to take full advantage of the secondary resources, in this paper, we reported a template-free process to prepare porous Co microfibers from spent lithium-ion batteries (LIBs). First, the waste LiCoO<sub>2</sub> powders were leached by oxalic acid at a suitable temperature, and rod-like cobalt oxalate powders were obtained. Second,...
journal article 2022
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Nie, Ding (author), Shang, Feng (author), Han, Xun (author)
Concrete dams are subjected to soft water penetration of a high water head during their long service lives. Degradation due to calcium leaching will decrease the durability of the concrete and affect dam safety. The long-term performance of concrete dams due to calcium leaching should be evaluated and predicted accurately to complete the...
conference paper 2021
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YAN, Peiyu (author)
The hydration of slag in complex binder with different dosage was studied by identifying Ca(OH)2 content in hardened paste and Ca/Si ratio of formed C-A-S-H gel. The results shows that: elevated temperature curing could improve the slag’s reaction degree in early ages, but hinder the further hydration in late time. Some Ca(OH)2 is consumed when...
conference paper 2021
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Pang, Min (author), Sun, Zhenping (author), Ji, Yanliang (author), Yang, Jingbin (author), Wang, Peiming (author), Xu, Yaling (author), Li, Huanhuan (author), Liu, Jiaying (author), Li, Fei (author)
Characteristics of fly ash(FA) blended mortars (50%, 70% and 90%) at different curing ages (28 days and 180 days) under ammonium chloride solution(ACS) leaching were investigated. Mass loss under leaching, initial CaO content, Ca(OH)2 content(CH), content of chemical bonded water, and hydration degree of blended pastes were tested by XRF and DSC...
conference paper 2021
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Visser, P. (author), Ranade, S. (author), Laird, J. S. (author), Glenn, A. M. (author), Hughes, A. E. (author), Terryn, H.A. (author), Mol, J.M.C. (author)
Depletion depths of inorganic components from a scribe edge in a polyurethane primer containing Li<sub>2</sub>CO<sub>3</sub>, MgO, BaSO<sub>4</sub> and TiO<sub>2</sub> beneath a topcoat, were determined using a range of techniques including SEM/EDS and proton induced X-ray and γ-ray emission spectroscopies. SEM of sections cut using an ion...
journal article 2021
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Chen, Guangmeng (author), Wen, Shifeng (author), Ma, Jiacheng (author), Sun, Zhiyong (author), Lin, Cunguo (author), Yue, Zhufeng (author), Mol, J.M.C. (author), Liu, M. (author)
Multifunctional intrinsic self-healing polymers (ISP) are gaining increasing attention these days, and many studies have been devoted to solving the conflict between achieving high mechanical polymer strength and active polymer chain diffusion. In this research, we developed an optimized self-healing composite coating by adding Benzotriazole ...
journal article 2021
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Borra, C.R. (author), Vlugt, T.J.H. (author), Yang, Y. (author), Spooren, Jeroen (author), Nielsen, Peter (author), Amirthalingam, Murugaiyan (author), Offerman, S.E. (author)
The circular economy demands waste utilization for the production of high-value products, and this requires the development of novel processing routes. In this study, rare earth (La and Ce) oxides were completely (&gt;99%) recovered from polishing waste by a combined novel reductive acid leaching and alkali treatment process. About 70% of...
journal article 2021
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Perko, Janez (author), Ukrainczyk, Neven (author), Šavija, B. (author), Phung, Quoc Tri (author), Koenders, Eddie A. B. (author)
A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis...
journal article 2020
Searched for: subject%3A%22leaching%22
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