内部结晶与抗裂双重作用的混凝土自防水研究  

Concrete self-waterproofing with dual effects of internal crystallization and crack resistance

作　　者：徐教强 王珍珍 杨晶 周智 Xu Jiaoqiang;Wang Zhenzhen;Yang Jing;Zhou Zhi(School of Civil and Architectural Engineering,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学土木建筑工程学院,海南海口570228

出　　处：《海南大学学报（自然科学版）》2024年第1期94-102,共9页Natural Science Journal of Hainan University

基　　金：海南省自然科学基金(2019RC0097)。

摘　　要：由于热带海洋环境有高温、高湿、高盐、高紫外线等特点,导致此环境下的传统防水卷材易老化开裂,不利于工程使用,因此亟需找到一种适用于热带海洋环境下的防水方法 .为此,本文提出了一种内掺水泥基渗透结晶型防水材料(Cementitions Capillary/Crystalline Waterproofing Materials,CCCW)和无机纳米抗裂减渗剂的方法,通过对不同种类的CCCW和无机纳米抗裂减渗剂混凝土进行抗压和抗渗试验并进行SEM微观分析.结果表明:内掺CCCW2和抗裂剂1混凝土性能提升最为显著,抗压强度达到了52.19 MPa,抗渗强度达到了1.4 MPa,对比基准组分别提升了22.92%和133.33%. CCCW2主要生成针状结晶,更有利于堵塞裂缝及孔隙;抗裂剂1改善孔隙的效果最好,10 nm下几乎看不到孔隙.Because the tropical marine environment has the characteristics of high temperature,high humidity,high salt and high ultraviolet rays,the traditional waterproofing membrane in this environment is easy to age and crack,which is not conducive to engineering use,it is urgent to find a waterproof method suitable for tropical marine environment.Through the compression and anti-seepage tests of different kinds of CCCW and inorganic nano anti-crack and anti-seepage agent concrete,the SEM microscopic analysis was performed.The results showed that compared with the reference component,the performance of concrete mixed with CCCW2 and anticracking agent 1 is the most remarkable,with the compressive strength reaching 52.19 MPa,and the imperme⁃ability reaching 1.4 MPa,which are increased by 22.92%and 133.33%,respectively.CCCW2 mainly produc⁃es needle-like crystals,which is more conducive to plugging cracks and pores.Anti-cracking agent 1 has the best effect on improving pores,and almost no pores can be observed at 10 nm.

关 键 词：水泥基渗透结晶型防水材料 无机纳米抗裂减渗剂 混凝土 防水性能 

分 类 号：TU528.32[建筑科学—建筑技术科学]