摘要
在对广州某施工现场进行混凝土回弹试验的基础上,采用χ2检验法对现场采集到的混凝土抗压强度选取正态分布进行检验,本文分析C50混凝土推定抗压强度的概率统计规律,计算结果表明,施工现场的C50混凝土推定抗压强度的概率分布服从正态分布,与规范中C50混凝土抗压强度的均值,变异系数相比,该C50混凝土抗压强度的离散型较小。
On the basis of the concrete compressive strength test in GuangZhou, the ex- penimental data of concrete compressive strength were studied by Normal Distribution, the distribution were examined byx^2 toothed. This paper ana- lyzes the laws of probability and statistics cube compressive strength of con- crete,The result shows that C50 concrete compressive strength submits Nor- real distribution, Compared with the mean and coefficient of variation of the compressive strength of concrete C50 in specification, the mean of the C50 concrete compressive strength is large, discrete is small.
出处
《江西建材》
2015年第13期9-10,共2页
Jiangxi Building Materials
关键词
混凝土抗压强度
概率统计
可靠度
Χ^2检验
Compressive strength of concrete Probability and Statistics Reliability, x^2 mothed
