以废玻璃为细集料的建筑砂浆透水性试验研究

An Experimental Study on Water Permeability of Architectural Mortar Using Waste Glass as Fine Aggregate.

作者信息

Jing Guoqing, Huang Gang, Zhu Wenjun

机构信息

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China.

Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety, Department of Transportation Engineering, Tongji University, Shanghai 201804, China.

出版信息

Materials (Basel). 2020 Mar 2;13(5):1110. doi: 10.3390/ma13051110.

DOI:10.3390/ma13051110

PMID:32131437

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7085014/

Abstract

This paper investigates the water permeability, consistency and density of architectural mortar with various contents of glass sand as fine aggregate. To reduce the effect of alkali-silica-reaction (ASR), metakaolin (MK) was used as supplementary cementitious material (SCM) instead of a component of white cement. The microstructure of glass sand mortar was visualized by means of scanning electron microscope (SEM) images. The experimental results showed that the permeability of the mortar increased with the glass sand, reaching its maximum at about 60-80% glass sand content. The optimum MK content varied with the content of glass sand, and higher content of MK was required for 60% glass sand. In addition, the consistency and density of mortar had a negative correlation with the increase of glass sand.

摘要

本文研究了以不同含量玻璃砂作为细集料的建筑砂浆的透水性、稠度和密度。为降低碱-硅反应（ASR）的影响，使用偏高岭土（MK）作为辅助胶凝材料（SCM）替代白水泥的一个组分。借助扫描电子显微镜（SEM）图像观察了玻璃砂砂浆的微观结构。实验结果表明，砂浆的渗透性随玻璃砂含量增加而增大，在玻璃砂含量约为60%-80%时达到最大值。最佳MK含量随玻璃砂含量变化，对于60%玻璃砂含量的情况需要更高的MK含量。此外，砂浆的稠度和密度随玻璃砂含量增加呈负相关。