摘要
通过使用太原理工大学实验室的DYE—2000数字压力试验机对294块立方体试块做抗压强度试验,主要研究了玻化微珠含量分别为30%、70%、130%(体积分数)的纳米玻化微珠保温承重混凝土抗压强度及概率分布特征。根据试验数据,得到了不同玻化微珠含量的纳米玻化微珠保温承重混凝土抗压强度的均值、标准差以及变异系数;同时通过正态分布模型对纳米玻化微珠保温承重混凝土的抗压强度的分布进行了检验;研究表明,不同玻化微珠含量对纳米玻化微珠保温承重混凝土抗压强度的变异系数影响不大;当显著性水平α=0.05时,可以用正态分布模型描述不同玻化微珠含量的纳米玻化微珠保温承重混凝土抗压强度的概率分布规律;最后根据统计分析和Bayes估计的结果,对C30纳米玻化微珠保温承重混凝土抗压强度的标准差给出了建议取值。
294 pieces of concrete test cube were used to understand the compressive strength which were made in the laboratory of Taiyuan University of Technology by the machine of DYE-2000 digital pressure testing machine. The glazed hollow bead with the rate of 30%,70%,130%（ volume fraction） of glazed hollow bead insulation bearing nano concrete and the characteristics of probability distribution is examined. According to the experimental data,obtained from the different glazed hollow bead content of glazed hollow bead insulation bearing nano concrete the mean value,variance and variation coefficient; At the same time it tested the compressive strength of glazed hollow bead insulation bearing concrete by the model of normal distribution. Study shows the different dosage of glazed hollow bead content has little effect on the coefficient of variation of the compressive strength of concrete; When the significance level of α = 0. 05,normal distribution model can be used to describe the probability distribution of compressive strength of glazed hollow bead insulation bearing nano concrete with different content of glazed hollow bead; According to the statistical analysis and Bayes estimation results,it suggested that C30 glazed hollow bead insulation bearing concrete＇s standard deviation values.
出处
《科学技术与工程》
北大核心
2014年第15期259-262,共4页
Science Technology and Engineering
基金
山西省高等学校科技创新项
高等院校博士点基金(20101402120007)资助
关键词
抗压强度
纳米玻化微珠保温承重混凝土
玻化微珠
概率分布
二氧化硅
变异特征
compressive strength glazed hollow bead insulation bearing nano concrete glazed hollow bead probability distribution silicon dioxide variation characteristics
