摘要
高性能混凝土是混凝土技术的重要发展方向和趋势之一,但在一定程度上存在早龄期开裂严重的问题,限制了其应用和推广。通过进行C60高性能混凝土早龄期力学性能试验研究,测试与早期变形裂缝相关的参数包括立方体和圆柱体抗压强度、小梁弯曲拉伸强度、圆柱体受压静弹性模量、以及干燥收缩随龄期的发展变化。试验结果将为高性能混凝土结构早龄期抗裂分析和裂缝控制提供依据和参考。
High performance concrete is one ofmost important tendencyin concrete technology,but the widely existed early age cracking problems hinder its further application and development.Experimental researches on mechanical properties of C60 high performance concrete at early age are performed.Mechanical properties related to deformation-caused cracking are tested at different ages,including compressive strengths of cube and cylinder specimen,bending tensile strength of beam,compressive static elastic modulus of cylinder specimen,and dying shrinkage.The results are good references for analyzing deformation-caused cracking problems and for taking prevention measures in high performance concrete structures.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第10期63-64,72,共3页
Concrete
基金
国家自然科学基金(50678133)
东北电力大学博士基金(BSJXM200703)
关键词
高性能混凝土
早龄期
抗压强度
弯曲拉伸强度
弹性模量
干燥收缩
high performance concrete
early age
compressive strength
bending tensile strength
elastic modulus
drying shrinkage
