首页> 中文期刊> 《工程质量》 >兰州新区回弹测强曲线试验研究

兰州新区回弹测强曲线试验研究

         

摘要

根据兰州新区常用原材料、配合比、施工工艺及养护条件,制作2673块不同强度等级(C20~C60)、不同龄期(3d~1000d)的混凝土试块,采用最小二乘法拟合测强曲线,即泵送普通混凝土、泵送高强混凝土测强曲线。其精度均高于国家规程和兰州地区规程测强曲线,可以推广使用,填补了兰州新区没有地区测强曲线的空白,同时,对影响测强曲线的因素进行了分析。%According to the Lanzhou area commonly used raw materials,mixture ratio,construction technology and curing conditions,making 2 673 pieces of different strength grades (C20~C60) and different ages (3d~1000d) of the concrete block,the fitting curve by the least square method,namely,pumping concrete, pumping high strength concrete strength measuring curve. Its accuracy was higher than the national regulations and rules of the Lanzhou area curve,that can be used to fill the gaps of there was no strength-measuring curve in Lanzhou new area,at the same time,factors affecting of the strength test curve was analyzed.

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