摘要
混凝土中的裂缝不仅给混凝土结构的整体性造成影响 ,而且还会对混凝土工程的耐久性造成威胁。本论文论述了粉煤灰掺入水工混凝土中 ,对降低水泥胶砂脆性系数 ,减小混凝土的弹性模量、干缩、绝热温升、自生体积变形和增大徐变度等的作用 ,并提出粉煤灰掺量与混凝土弹性模量的相关关系式 ,说明粉煤灰的掺入对提高水工混凝土的抗裂性能是有利的。
Crack will not only do harm to construction of concrete structures but also destroy durability of concrete project. In this paper, we narrate that we can decrease brittleness of cement, elastic modulus, shrinkage, hydration temperature, self-volume deformation of concrete, and increase creep by adding fly ash, and present relationship between content of fly ash and elastic modulus of concrete, which shows that adding fly ash into concrete will benefit crack resistance of hydraulic concrete.
出处
《水力发电学报》
EI
CSCD
北大核心
2005年第2期73-76,共4页
Journal of Hydroelectric Engineering
关键词
水工混凝土
抗裂性能
综述
粉煤灰
hydraulic concrete
crack resistance
overview
fly ash.