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引起混凝土质量(强度)波动的因素主要是,水灰比的波动、砂石质量波动、水泥质量的波动、外加剂引起的波动、搅拌运输和浇捣的波动以及养护条件的波动等。而在原材料质量固定的条件下,控制混凝土质量(强度)的关键是水灰比,其实质是控制用水量。本文重点介绍铁道部建筑科学研究院郭成举研究员提出的测定拌合物稠度跳桌沉落度法的优越性。
The factors causing the fluctuation of concrete quality (strength) are mainly the fluctuation of water-cement ratio, the fluctuation of sand quality, the fluctuation of cement quality, the fluctuation caused by admixtures, the fluctuation of mixing transportation and pouring, and the fluctuation of curing conditions. In the case of fixed raw material quality, the key to controlling the quality (strength) of concrete is the ratio of water to cement, which essentially controls the amount of water used. This article focuses on the superiority of the method of measuring the degree of sinking at the jump table of the blends proposed by the researcher Guo Chengju of the Ministry of Railways.