硅酸盐通报2023，Vol.42Issue(12)：4360-4367,8.
掺花岗岩石粉砂浆自收缩性能演变规律研究
Autogenous Shrinkage Performance Evolution Law of Mortar Mixed with Granite Powder
摘要
Abstract
In order to improve the utilization rate of granite powder,based on the analysis of the influence of grinding time on particle characteristics of granite powder,the influences of granite powder dosage and grinding time on autogenous shrinkage performance of mortar were systematically studied.The main factors affecting the self shrinkage performance of mortar with granite powder were analyzed using grey entropy method.Finally,microscopic testing methods were used to reveal the mechanism of the influence of granite powder on self shrinkage performance of mortar.The result show that with the increase of grinding time,the fineness of stone powder particles gradually increases,the content of particles with a particle size less than 10 μm increases,the content of particles with a particle size greater than 40 μm decreases,and the self-contraction deformation of granite-doped stone powder mortar gradually increases.With the increase of granite powder content,the self shrinkage deformation of mortar shows a pattern of increasing first and then decreasing.Appropriately reducing the dosage of granite powder particles with particle size less than 20 μm is beneficial for improving the self shrinkage activity index of mortar mixed with granite powder.The granite powder mainly affects the type and quantity of hydration products inside mortar,thereby affecting its self shrinkage deformation law.关键词
花岗岩石粉/砂浆/自收缩/颗粒参数/微结构/水化产物/灰熵分析Key words
granite powder/mortar/autogenous shrinkage/particle parameter/microstructure/hydration product/gray entropy analysis分类
建筑与水利引用本文复制引用
陈梅,韩依璇,张云升,胡向楠,薛翠真,王将华..掺花岗岩石粉砂浆自收缩性能演变规律研究[J].硅酸盐通报,2023,42(12):4360-4367,8.基金项目
江苏省交通厅科研项目(2020Y21) （2020Y21）
国家自然科学基金地区联合基金项目(U21A20150) （U21A20150）
