Influence of deep penetrating sealer on concrete surface performance

IF 1.8 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Magazine of Concrete Research Pub Date : 2023-05-31 DOI:10.1680/jmacr.23.00014

Bo-bo Xiong, Cheng Li, Jing Xu, X. Lu, Bin Tian, Bo-Fu Chen, Congcong Lv, Wanhao Liu

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Abstract

Deep penetrating sealer (DPS) is a general term for a class of waterproofing agents that can fill the internal pores of concrete by mixing an alkali metal silicate solution as the base material with catalysts and additives (Jiang et al. 2015). The objective of this study was to investigate the characteristics and mechanism of the effect of different amounts of DPS sprayed on concrete. The water absorption, hydrophilicity, permeability, microhardness, abrasion erosion resistance, and pore structure of concrete were tested at different water cement ratios and sprayed DPS amounts. The test and analysis results showed that compared with the control concrete, concrete absorbed less water and exhibited less permeability after being sprayed with DPS. Moreover, its hydrophilicity, microhardness, and abrasion erosion resistance improved, while its pore volume significantly decreased. The effect was more evident when the amount of sprayed DPS was higher. This study provides a reference for practical engineering applications by demonstrating the variation in concrete surface properties after spraying different amounts of DPS.

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深层渗透性密封剂对混凝土表面性能的影响

深层渗透密封剂（DPS）是一类防水剂的统称，通过将碱金属硅酸盐溶液作为基材与催化剂和添加剂混合，可以填充混凝土的内部孔隙（Jiang等人，2015）。本研究的目的是研究不同用量DPS在混凝土上喷射的特性和作用机理。测试了不同水灰比和DPS用量下混凝土的吸水性、亲水性、渗透性、显微硬度、耐磨蚀性和孔隙结构。试验和分析结果表明，与对照混凝土相比，喷射DPS后，混凝土吸水率较低，渗透性较差。此外，它的亲水性、显微硬度和耐磨蚀性都有所提高，而孔体积显著减小。DPS用量越大，效果越明显。本研究通过展示不同DPS用量后混凝土表面性质的变化，为实际工程应用提供了参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Magazine of Concrete Research 工程技术-材料科学：综合

CiteScore

4.60

自引率

11.10%

发文量

102

审稿时长

5 months

期刊介绍： For concrete and other cementitious derivatives to be developed further, we need to understand the use of alternative hydraulically active materials used in combination with plain Portland Cement, sustainability and durability issues. Both fundamental and best practice issues need to be addressed. Magazine of Concrete Research covers every aspect of concrete manufacture and behaviour from performance and evaluation of constituent materials to mix design, testing, durability, structural analysis and composite construction.