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高吸水性聚合物内部养护对疏水性水泥基材料水化的影响

Effect of internal curing by super-absorbent polymer on hydration of hydrophobic cement-based material.

作者信息

Li Yunfeng, Wang Qing, Zheng Xu, Zhang Rui, Wang Ning

机构信息

College of Civil and Architectural Engineering, Taishan University, Shandong, 271000, China.

College of Civil Engineering and Architecture, Shandong University of Science and Technology, Shandong, 266590, China.

出版信息

Sci Rep. 2025 Jul 2;15(1):23244. doi: 10.1038/s41598-025-06008-7.

DOI:10.1038/s41598-025-06008-7
PMID:40603386
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12222810/
Abstract

Hydrophobic cement-based materials are a primary focus in current research due to their potential applications. Nevertheless, the presence of a hydrophobic layer often impedes the hydration process, resulting in reduced concrete strength. In this study, the use of super-absorbent polymer (SAP) to enhance the hydration degree of cement, thereby improving the mechanical properties of hydrophobic cement-based materials, was explored. SAP maintains the intrinsic hydrophobic characteristics of these materials while promoting cement hydration. The hydration degree was assessed using a combined approach of qualitative and quantitative analyses. The underlying mechanisms contributing to the enhanced material strength were elucidated through the calculation and analysis of the cement-air ratio. Additionally, the hydration heat release process was investigated through finite element simulation. The integration of SAP not only strengthens the material but also enhances its crack resistance, significantly broadening the potential applications of hydrophobic cement-based materials.

摘要

由于其潜在应用，疏水性水泥基材料是当前研究的主要焦点。然而，疏水层的存在常常阻碍水化过程，导致混凝土强度降低。在本研究中，探索了使用超吸水性聚合物（SAP）来提高水泥的水化程度，从而改善疏水性水泥基材料的力学性能。SAP在促进水泥水化的同时保持了这些材料固有的疏水特性。使用定性和定量分析相结合的方法评估水化程度。通过计算和分析水泥-空气比阐明了材料强度提高的潜在机制。此外，通过有限元模拟研究了水化热释放过程。SAP的加入不仅增强了材料强度，还提高了其抗裂性，显著拓宽了疏水性水泥基材料的潜在应用范围。

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本文引用的文献

1
Experimental Study on the Permeability of SAP Modified Concrete.SAP改性混凝土渗透性的试验研究
Materials (Basel). 2020 Jul 29;13(15):3368. doi: 10.3390/ma13153368.
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Surface modification of cured cement pastes by silane coupling agents.硅烷偶联剂对固化水泥浆体的表面改性。
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