森林工程2017，Vol.33Issue(6)：67-70,96,5.
砾石混凝土抗冻性能研究
Study on Frost Resistance of Gravel Concrete
于晓坤 1王锐 1王者2
作者信息
- 1. 东北林业大学 土木工程学院, 哈尔滨, 150040
- 2. 黑龙江工程学院 土木与建筑工程学院, 哈尔滨, 150050
- 折叠
摘要
Abstract
The rivers in Heilongjiang province are widely distributed , and there are abundant gravel resources along the river sys-tem, which can be used as course aggregate in cement concrete pavement , in order to reduce the cost of the project .Because of the special geographical and climatic environment in Heilongjiang Province , freeze-thaw cycle is one of the important factors that affect the durability of concrete pavement .The design of pavement must take into account the frost resistance of gravel concrete pavement . Using Pingshan Hunhe River gravel in Heilongjiang as raw material , the frost resistance of gravel concrete was studied by the rapid freezing and thawing machine .Results show that: with the increase of freeze -thaw cycles , the modulus of elasticity of gravel con-crete decreases , mass loss rate increases and the frost resistance of concrete decreases .The frost resistance of gravel concrete in 5~26.5 mm range is the best .After freezing and thawing cycles reached 200 times, the frost resistance of gravel concrete with air entrai-ning agent is better than that without air entraining agent .The results provide theoretical reference for the construction of rural roads in Heilongjiang province , which has certain economic significance to engineering practice .关键词
级配/砾石混凝土/抗冻性/破坏Key words
Gradation/gravel concrete/frost resistance/destruction分类
交通工程引用本文复制引用
于晓坤,王锐,王者..砾石混凝土抗冻性能研究[J].森林工程,2017,33(6):67-70,96,5.
