摘要
本文将浆体中的粉体颗粒及其表面包裹着的一层水膜作为复合颗粒,从而将求浆体中粉体颗粒堆积密度的问题转化为求假想干粉体系复合颗粒堆积密度的问题,在Stovall模型的基础上推导了浆体中连续粒径粉体的堆积密度计算方法,并通过试验确定了待定参数。本方法可以用于模拟水泥、磨细矿粉、粉煤灰等胶凝材料细颗粒的堆积密度。
By regarding the powder particles wrapped with water film as compounded particles,the packing density of powder particles in actual paste system is transformed into the packing density of compounded particles in imaginary dry-particle system.Based on Stovall Model,a calculation method for packing density of powder with continuous particle size distribution in paste is developed,and the parameters in the method are identified by experiment.This calculation method could be used to simulate the packing density of cementitious materials such as cement,fine slag,and fly ashes.
出处
《混凝土》
CAS
CSCD
北大核心
2005年第6期20-23,共4页
Concrete
基金
国家"863"计划资助项目(2002AA335050)
关键词
浆体
粉体
堆积密度
连续粒径
计算方法
<Keyword>paste
powder
packing density
continuous particle size distribution
calculation metod
