铁道科学与工程学报2016，Vol.13Issue(11)：2148-2153,6.
冬季低温对C RTSⅠ型C A砂浆质量影响研究
Influences of low temperature on CA mortar in winter
摘要
Abstract
In this paper,influences of low temperature on the performance of CA mortar were studied,and tem-perature control measures were compared and selected by temperature monitoring after pouring CA mortar and mortar assessment after removing slab track,the results show that winter environment temperature of construction site is lower and ranges from -5 ℃ to 5 ℃ in Yangtze river delta area.Under this temperature conditions,the early strength of CA mortar develops slowly,and some large pores distresses appear in the edge of CA mortar un-der the track slab.When using cotton quilt coverage,the temperature of CA mortar under slab changes with the environment by fluctuation within a narrow range,cross section of mortar inlet shows coarse sand has an subsid-ence tendency without producing delamination;under the conditions of cotton quilt coverage and heat source,the temperature of CA mortar under slab raises gradually,with the environment by fluctuation within a narrow range, mortar assessment reveals good cross section uniformity by removing track slab,and it is completely in conformity with the technology requirements.关键词
轨道板/低温环境/CA砂浆/温控措施Key words
track slab/low temperature/CA mortar/temperature control measures分类
交通工程引用本文复制引用
王涛,李洪刚,贾恒琼,李海燕..冬季低温对C RTSⅠ型C A砂浆质量影响研究[J].铁道科学与工程学报,2016,13(11):2148-2153,6.基金项目
国家自然科学基金资助项目（51408610）；中国铁路总公司重大课题资助项目 （）
