摘要
为了分析道面水泥混凝土粗集料的分形特征,基于分形几何的基本理论,推导出了集料的质量分布分形几何模型;针对军用机场水泥混凝土道面粗集料的特点,分析了集料分维数D的计算方法,并按筛孔19.0 mm的通过量确定最小计算粒径;分维数越大,级配中的细颗粒就越多;随着分维数D的增大,水泥混凝土的抗弯拉强度也相应地增大。
In order to analyze coarse aggregate fractal character of airport pavement cement concrete,the fractal formula of mass distribution was deduced based on the fractal geometry theory.The calculation method of fractal dimension（D）was discussed and the minimal particle size is confirmed by the passing ration of 19.0 mm base on coarse aggregate fractal character.The aggregate gradation becomes finer with the increasing of D.The bending strength of the cement concrete becomes bigger with the increasing of D.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第9期60-61,64,共3页
Concrete
基金
空军"十一"期间重大攻关项目(KH0526011)
关键词
机场工程
分形维数
水泥混凝土
粗集料
级配
airport engineering
fractal dimension
cement concrete
coarse aggregate
gradation
