预应力混凝土用钢绞线抗拉强度测量不确定度的评定

Evaluation of uncertainty about tensile of steel strand for prestressed concrete

拉伸强度性能对混凝土用钢绞线极为重要。通过预应力混凝土用钢绞线拉伸强度试验过程建立数学模型,对钢绞线抗拉强度进行不确定度评定,结果表明影响抗拉强度结果的主要因素是重复性试验。因此,在实际检验检测活动中,应提高检验检测人员素质,以保证检测的准确性。

Tensile strength properties are extremely important for strands used in concrete. A certain kind of mathematical model is established according to the steel strand tensile testing in which the uncertainty is analyzed. The results show that the main factor affecting the tensile strength results is the repeatability test. So,in the actual inspection and inspection activities,the quality of inspection and inspection personnel should be improved to ensure the accuracy of the inspection.