水力发电学报2012，Vol.31Issue(5)：250-253,265,5.
高土石围堰塑性混凝土的力学特性与龄期和施工安全的关系
Relationship of construction safety and mechanical properties versus age of plastic concrete in high earth-rock cofferdam
摘要
Abstract
Operation and safety of high earth-rock cofferdam is closely related with plastic concrete mechanical properties that depend on concrete age. This paper analyzes mixture ratio for two kinds of plastic concrete and puts forward its test method, in combination with a study of impervious wall material for the upstream cofferdam of the Three Gorges project in stage II. The results of uniaxial and triaxial compression tests for the two concretes indicate that the compressive strength and initial tangent modulus of flexible material increase significantly with the age, with a greater increase in compressive strength, and that the ratio of modulus over strength decreases with the age and gradually approaches a stable state. The permeability coefficient decreases gradually with the age.关键词
水工材料/力学特性/试验研究/施工安全/塑性混凝土Key words
hydraulic material/mechanical properties/experimental study/construction safety/plastic concrete分类
建筑与水利引用本文复制引用
孙开畅,田斌,孙志禹..高土石围堰塑性混凝土的力学特性与龄期和施工安全的关系[J].水力发电学报,2012,31(5):250-253,265,5.基金项目
国家自然科学基金项目 （）
“十一五”国家科技支撑计划课题 （）
