摘要
采用非接触式位移传感器对不同配合比的高性能混凝土从初凝到14d内的自干燥收缩进行量测,研究浆体相对密度、骨料平均浆体厚度对其自干燥收缩的影响。结果表明,随着浆体相对密度和骨料平均浆体厚度的增大,混凝土自干燥收缩越大,自干燥收缩与浆体相对密度之间存在较好的线性相关性,与骨料平均浆体厚度之间存在较好的对数关系。
Self-desiccation shrinkage of high performance concrete with different mix proportions was measured from initial setting to 14 days with a type of non-touched micro-displacement sensor.The effects of relative density of pastes,average paste thickness of aggregate on self-desiccation shrinkage were studied.The results indicate that self-desiccation shrinkage increases with an increase in relative density of pastes and in average paste thickness of aggregate.There is significant linear correlation between self-desiccation shrinkage change and relative density of pastes; there is significant logarithm correlation between self-desiccation shrinkage change and average paste thickness of aggregate.
出处
《混凝土》
CAS
CSCD
北大核心
2008年第2期31-33,38,共4页
Concrete
基金
国家自然科学基金资助项目(50478003)
福建省科技厅项目(2002F007)
福建省教育厅科研资助项目(JA05305)
关键词
自干燥收缩
浆体相对密度
骨料平均浆体厚度
水灰比
高性能混凝土
self-desiccation shrinkage
relative density of pastes
average paste thickness of aggregate
water-cementratio
high performance concrete
