郑州大学学报（工学版）2026，Vol.47Issue(4)：33-41,9.DOI:10.13705/j.issn.1671-6833.2026.01.004
含硅藻土的水下不分散灌浆材料配合比设计
Mix Proportion Design of Underwater Non-dispersible Grouting Material Containing Diatomite
摘要
Abstract
Aiming at the dispersion problem of underwater crack repair materials for concrete dams,an underwater non-dispersible grouting material containing diatomite was designed.Firstly,the mesh number and content of diat-omite were determined by mercury intrusion test and single mixing test,and the influence of diatomite on the me-chanical properties of grouting materials was analyzed by compressive strength and splitting tensile strength tests.Secondly,the effects of hydroxypropyl methyl cellulose flocculant(HPMC)and ordinary PCA®-typeⅠ polycarbox-ylic acid high performance water reducing agent on the flowability and anti-washout performance of grouting materi-als were further studied by cone flowability method,visual observation method,pH value method,and plunge test.Finally,based on the orthogonal test method,the specific ratio of underwater grouting repair materials was deter-mined.The results showed that when the water-cement ratio was 0.50,the diatomite had good compatibility with the slurry,and the addition of 2%(mass fraction,the same below)100 mesh diatomite could improve the com-pressive strength and splitting tensile strength of the grouting material.On this basis,the addition of 0.6%HPMC could improve the anti-washout performance of the slurry,and the addition of 0.10%water reducing agent could improve its flowability.The diatomite mesh of underwater grouting material was determined to be 100 mesh,the content was 2%,the content of HPMC was 0.6%,and the content of PCA®-typeⅠ polycarboxylic acid high per-formance water reducing agent was 0.10%.关键词
水下修补灌浆材料/多孔材料/抗分散性/流动性Key words
underwater repair grouting material/porous material/anti-washout performance/flowability分类
建筑与水利引用本文复制引用
孙啸,王相洋,杨专家,张鑫玉..含硅藻土的水下不分散灌浆材料配合比设计[J].郑州大学学报（工学版）,2026,47(4):33-41,9.基金项目
国家自然科学基金资助项目(52279131) （52279131）
