硅酸盐通报2018，Vol.37Issue(2)：578-585,8.
基于微观结构分析的水泥稳定碎石微裂自愈性能
Self-healing Properties of Micro-cracks of Cement Stabilized Macadam Based on Microstructure Analysis
摘要
Abstract
To make a quantitative and ocular analysis of the self-healing property of micro-cracks based on the microstructure of cement stabilized macadam,the changes of the width of micro-cracks and the generation of healing products with the increase of age at different levels of micro-cracks were monitored by the digital crack width monitor KON-FK(B) in real time and observed and analyzed by the universal stereo microscope XTZ-0ST.With the descriptive statistics function of SPSS software,the processing and statistical analysis of the width of micro-cracks were completed.As a result,ranges of micro-cracks' width before and after self-healing were concluded.Based on the principle of pixel area calculation method,images of the self-healing products as age increased were further processed and analyzed by the image processing software Imagemagick.And after the calculation,the coverage of self-healing products in different periods and logarithmic fitting equation of the pattern of the coverage at different levels of micro-cracks were concluded.The results show that micro-cracks' width of cement stabilized macadam gradually reduces with the increase of age and the coverage of self-healing products which are generated inside micro-cracks constantly enlarges.And in the later stage micro-cracks basically realize a complete healing.It proves that cement stabilized macadam after micro-cracks occur has a good capacity of self-healing in therms of both macroscopic mechanical properties and micro-structural characteristics.关键词
道路工程/水泥稳定碎石/微裂技术/自愈合/裂缝宽度/微观结构Key words
road engineering/cement stabilized macadam/micro-crack technology/self-healing/crack width/microstructure分类
化学化工引用本文复制引用
李娜,魏连雨,张静..基于微观结构分析的水泥稳定碎石微裂自愈性能[J].硅酸盐通报,2018,37(2):578-585,8.基金项目
国家自然科学基金(51578208) （51578208）
