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影响因子：14.3

DOI码：10.1002/advs.202503333

发表刊物：Advanced Science

关键字：anti-seepage; calcium-silicate-hydrate; grouting materials; mechanical properties; stone conservation

摘要：Hydraulic calcium-silicate-hydrate (C-S-H), a key binding agent in both ancient mortars and modern cement, holds significant promise for heritage conservation. Drawing inspiration from ancient Roman techniques, this study investigates the development of C-S-H-based grouting materials to address water-induced erosive damage in the Beishan Grottoes of the Dazu Rock Carvings. The interfacial interactions between C-S-H mortar and sandstone are analyzed using molecular dynamics simulations, revealing the crucial role of hydrogen bonding at the interface of C-S-H and mineral phases for adhesion. In the in situ synthesis of C-S-H with a reticulated structure from Ca(OH)2/silica fume mixtures under ambient conditions, this work systematically investigates the impact of varying calcium-to-silica (C/S) ratio and water-to-binder ratios on the mechanical properties and pore structure of C-S-H-based mortars. The optimal mechanical and physical properties are achieved with a C/S ratio of 0.8, water/binder ratio of 2.0, binder/aggregate ratio of 1:3, and 4 wt% polycarboxylate superplasticizer. Laboratory-scale experiments confirm its excellent compatibility with sandstone, offering a potential effective grouting solution for the Beishan Grottoes and emphasizing the importance of material compatibility in heritage conservation. This integrated approach encompassing materials design, synthesis, characterization, and interfacial analysis, presents a robust framework for developing tailored binding agents for various applications.

第一作者：Mengjun Jia,Huimin Yan,Qingqing Xu

合写作者：Celestino Grifa,Gang Zhao,Siwei Jiang

论文类型：期刊论文

通讯作者：Jinhua Wang,Zhenhua Wei,Han Liu,Xiao Ma

论文编号：202503333

是否译文：否

发表时间：2025-05-09

收录刊物：SCI

发布期刊链接：https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202503333