典型堵孔型养护剂溶液养护对不同砂浆表层性能的作用研究

doi:10.16552/j.cnki.issn1001-1625.2024.0960

摘要/Abstract

摘要： 本文探究了硅酸钠溶液、碳酸氢钠溶液、复合硅酸钠与氢氧化钠溶液3种典型堵孔型养护剂溶液对不同砂浆表层性能的影响,对养护剂溶液养护后的砂浆表层回弹强度、表层毛细吸水量、表层碳化深度进行了测定,并对比分析了砂浆主要配合比设计参数对砂浆表层性能养护效果的影响规律。结果表明,早龄期养护剂溶液养护制度能够有效提升砂浆的表层性能。经5%(质量分数)碳酸氢钠养护剂溶液养护后的砂浆表层回弹强度平均提高了18.8%,表层毛细吸水量下降了21.0%,表层碳化深度下降了14.1%。此外,养护剂溶液养护对高水胶密度比砂浆的作用效果更明显。

关键词: 养护剂溶液, 养护, 表层性能, 配合比, 水胶比, 水胶密度比

Abstract: In this paper, the effects of three typical pore-blocking curing agent solutions, sodium silicate solution, sodium bicarbonate solution, complex sodium silicate solution and sodium hydroxide solution, on the surface properties of different mortars were investigated. The surface rebound strength, surface capillary water absorption and surface carbonization depth of mortar after curing with curing agent solution were measured, and the effect of design parameter of main mix ratio of mortar on the curing effect of surface property of mortar was compared and analyzed. The results show that the curing system of early curing agent solution can effectively improve the surface properties of mortar. After curing with 5% (mass fraction) sodium bicarbonate curing solution, the mortar surface rebound strength increases by 18.8% on average, the surface capillary water absorption decreases by 21.0%, and the surface carbonization depth decreases by 14.1%. In addition, the curing effect of curing agent solution on mortar with high water-cement-density ratio is more obvious.

Key words: curing agent solution, curing, surface property, mix ratio, water-cement ratio, water-cement-density ratio

中图分类号:

TU528.064

张宇, 杨进波, 季善浩, 张泽. 典型堵孔型养护剂溶液养护对不同砂浆表层性能的作用研究[J]. 硅酸盐通报, 2025, 44(1): 11-20.

ZHANG Yu, YANG Jinbo, JI Shanhao, ZHANG Ze. Effect of Typical Pore-Blocking Curing Agent Solution Curing on Surface Properties of Different Mortars[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(1): 11-20.

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