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Ouyang, Xiaowei (author), Wang, Liquan (author), Xu, Shida (author), Ma, Yuwei (author), Ye, G. (author)Carbonation treatment can effectively improve the performance of recycled concrete aggregate and fines due to the reactions of CO<sub>2</sub> with CH and C–S–H gel of cement paste. To better understand the mechanisms involved in the performance improvement, the surface properties of carbonated recycled cement paste powder (CRP) and its effect...journal article 2020
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Ouyang, Xiaowei (author), Ma, Yuwei (author), Liu, Ziyang (author), Liang, Jianjun (author), Ye, G. (author)This paper presents the results of an experimental study performed to investigate the effect of activator modulus (SiO<sub>2</sub>/Na<sub>2</sub>O) and slag addition on the fresh and hardened properties of alkali-activated fly ash/slag (AAFS) pastes. Four activator moduli (SiO<sub>2</sub> /Na<sub>2</sub>O), i.e., 0.0, 1.0, 1.5, and 2.0, and...journal article 2020
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Ouyang, X. (author), Pan, Z. (author), Qian, Zhiwei (author), Ma, Yuwei (author), Ye, G. (author)The interface between filler and hydration products can have a significant effect on the mechanical properties of the cement paste system. With different adhesion properties between filler and hydration products, the effect of microstructural features (size, shape, surface roughness), particle distribution and area fraction of filler on the...journal article 2018
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Ouyang, X. (author), Koleva, D.A. (author), Ye, G. (author), van Breugel, K. (author)A complete understanding of the mechanisms upon which a filler acts in a cement-based material, e.g. as a C–S–H nucleation and/or growth-inducing factor, is of high importance. Although various studies report on accelerated cement hydration in the presence of fillers, the reason behind these observations is not completely understood yet. This...journal article 2017