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由于混凝土属于水泥基复合材料,内部结构极为复杂,影响强度的因素很多,因此混凝土的强度的离散性较明显。在用传统方法对测量结果进行误差评定时,由于随机误差和系统误差是两个性质不同的量,前者用标准偏差表示,后者则用最大可能误差来表示,在数学上无法解决两者之间的合成方法问题。本文针对钻芯法检测混凝土的强度,利用不确定度的原理对检测结果进行了分析和评定。
As the concrete is a cement-based composite material, the internal structure is extremely complex, many factors affect the strength, so the strength of the concrete dispersion more obvious. In the traditional method of measuring the error when the results of the evaluation, the random error and the systematic error are two different nature of the amount of the former with standard deviation, the latter with the maximum possible error that can not be mathematically resolved both Between the synthesis method problem. In this paper, the strength of concrete is tested by the core drilling method, and the test results are analyzed and evaluated by using the principle of uncertainty.