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最近,建筑工程部水泥研究院物理室进行了熟料游离石灰对水泥和混凝土强度的影响的试验研究.试验结果证明,熟料中游离石灰对硬练砂浆、混凝土强度的影响比较敏感,熟料中游离石灰含量越大,水泥砂浆和混凝土的强度降低越多.用软练检验砂浆和混凝土的强度时,游离石灰的影响就不显著.游离石灰对硬练抗拉强度增进率的影响特别显著,当熟料中游离
Recently, the laboratory of the Cement Research Institute of the Ministry of Construction and Engineering conducted an experimental study on the effect of clinker free lime on the strength of cement and concrete. The test results prove that free lime in the clinker is more sensitive to the strength of hard mortar and concrete, and the clinker is more sensitive. The greater the free lime content, the more the strength of the cement mortar and the concrete is reduced. When the strength of the mortar and the concrete is tested with the softness, the effect of the free lime is not significant. The effect of the free lime on the promotion rate of the hard tensile strength is particularly significant. When clinker is free