湖南大学学报（自然科学版）2016，Vol.43Issue(6)：83-88,6.
防水剂对石灰偏高岭土修补砂浆性能的影响
Effect of Water-repellent Admixtures on Repair Mortars Made of Lime and Metakaolin
彭小芹 1曹春鹏 1季晓丽 1曾路1
作者信息
- 1. 重庆大学材料科学与工程学院，重庆 400045
- 折叠
摘要
Abstract
A kind of repair mortar for geotechnical building was prepared with lime and metakaolin as major materials .Two kinds of water‐repellent admixtures (tung oil and calcium stearate) were used to im‐prove the water resistance of the mortars .Different properties of the mortars were evaluated ,such as strength ,the process of reaction ,water absorption ,softening coefficient and shrinkage .Phase and micro‐structure analysis of the mortars were carried out through XRD and SEM .The results show that tung oil and calcium stearate can improve water resistance of the mortars significantly .Water absorption of the mortars with tung oil or calcium stearate can be below 2 .5% .Tung oil and calcium stearate hinder the poz‐zolanic reaction of metakaolin ,which as a result decrease the mortars’ strength .But 28 d compressive strength of the mortars are all above 5 MPa .Also ,tung oil and calcium stearate can regulate the growth of products and affect the micromorphology and structure of mortars .Tung oil make the particle size smaller and the structure more compact ,while calcium stearate leads to a looser structure .Considering both the mortar strength and water resistance ,the optimum dosage of tung oil and calcium stearate was 5% and 1 .5% respectively .关键词
石灰/偏高岭土/砂浆/桐油/硬脂酸钙/耐水性Key words
lime/metakaolin/mortar/tung oil/calcium stearate/water resistance分类
土木建筑引用本文复制引用
彭小芹,曹春鹏,季晓丽,曾路..防水剂对石灰偏高岭土修补砂浆性能的影响[J].湖南大学学报（自然科学版）,2016,43(6):83-88,6.
