混凝土骨料含量对弹性模量的影响预测  

Impact prediction of concrete aggregate content on elastic modulus

作　　者：李艳茹[1] 姜海波[1] 

机构地区：[1]海军工程大学后勤指挥与工程系,天津300450

出　　处：《四川建筑科学研究》2012年第1期175-178,共4页Sichuan Building Science

摘　　要：根据统计平均的概念,提出了物理意义明确的骨料立方体等效模型,进而推导出混凝土弹性模量计算公式,并与互相独立的两组试验数据进行对比分析。提出了可将混凝土试验数据作为计算基础的骨料增减量预测法,放宽了对预测模型使用条件的限制。研究表明,公式的预测值与试验值的相对误差一般可以保持在10%以内,并且适用于骨料弹性模量和体积分数大幅度变化的情况。The calculated formula of concrete elastic modulus was deduced from an equivalent cube model of aggregate proposed by statistical average method, and compared with two groups of independent testing datum. A prediction method of aggregate calculated on the base of testing data was advised,which could decrease the limitation of the prediction model. It is shown that the equivalent cube model of aggregate has clear significance in physics, and the fractional error of predicted value and experimental data is less than 10%. The calculated formula is suitable for large variance of aggregate and volume of concrete.

关 键 词：混凝土 骨料含量 弹性模量 预测 等效模型 

分 类 号：TU528.01[建筑科学—建筑技术科学]