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国外有些学者认为,砂子的细度模量仅影响混凝土的水泥用量,而不影响混凝土的强度。但是在实际施工中,我们发现砂子的细度模量是影响混凝土强度的一个重要因素,为此,我们在坍落度相同(4±0.5厘米)的条件下,进行了不同细度模量(0.7～3.2)和不同水泥比(0.4～0.7)的混凝土强度试验,以探求砂子细度模量对混凝土的强度和水泥用量的影响关系。试验所用各种细度模最的砂子,均系汉江河砂经人工筛分分级,虽后再按不同配比
Some foreign scholars believe that the fineness modulus of sand affects only the cement content of concrete without affecting the strength of the concrete. However, in actual construction, we found that the fineness modulus of sand is an important factor affecting the strength of concrete. For this reason, we performed different fineness moduli under the same slump (4±0.5 cm). 0.7 to 3.2) and different concrete ratios (0.4 to 0.7) of the concrete strength test, in order to explore the fineness modulus of the sand on the strength of concrete and cement dosage. The sands with the most fineness molds used in the tests are all subject to manual screening and classification by the Hanjiang River sand.