Products and systems for the protection and repair of concrete structures - test methods - determination of injectability and splitting test 混凝土结构的保护和修复用产品和系统.试验方法.可注入性测定和抗裂试验
The ring test result shows that tendency of concrete cracking is consistent with shrinkage and veritifies early - age shrinkage is responsible for the concrete early - age crack 通过圆环法混凝土抗裂试验,验证了混凝土收缩与开裂趋势的一致性,进一步证明了早期收缩对混凝土早期裂缝的重要影响。
This paper first discusses the cause of crack formation and crack mechanism of high performance concrete . then carries out crack tests of three groups of concrete slabs using aggregate type , sand rate and dosage of fly ash as design parameter 本文初步探讨了泵送高流态混凝土的裂缝成因和开裂机理,并分别以骨料品种、砂率以及粉煤灰掺量为设计参数进行了三组配合比混凝土平板的抗裂试验。