有标准差要求的混凝土抗压强度质量控制与评定方法的研究及其运用

Quality Control and Evaluation Methods of Portland Cement Concrete Compression Strength with Standard Deviation Requirements

分析了非数理统计法与数理统计法在公路桥梁工程施工中进行混凝土抗压强度控制与评定所遇到的问题,提出了符合混凝土分项工程数理统计评定方法的节段混凝土抗压强度控制与评定方法,在节段混凝土抗压强度质量控制与评定中增加了Sn控制指标,并结合荆州长江公路工程的运用修正了JTJ 071—98部颁标准的Rn与Rmin的一些数值指标。

In highway bridge construction, there are some problems of controlling and appraising con crete strength when using the method combining statistic with non statistic. Aiming at this, a method to control and assess segmental concrete strength is put forward, which is suitable to the statistic method of construction operation work. Furthermore, the control index Sn is increased to the method of control and appraisal of seg mental strength , and the numerical indexes in JTJ 071 - 98 specification are modified in conjunction with ap plication in Jingzhou Yangtze River Highway Bridge engineering.