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一、轻混凝土和钢筋混凝土的收缩混凝土收缩的原因,即在空气中硬固时体积的减少,是由于混凝土的毛细管孔隙和空气的湿度平衡受破坏,以及其水泥石中胶体部分所发生的化学的和物理的反应所引起的。这里我们列举的只是影响混凝土收缩的主要因素,也即水泥的品种、混凝土的成分、骨料的类型、水灰比、混凝土开始失水的期龄、试件的尺
1. The reason for the shrinkage of the shrinkage concrete of light concrete and reinforced concrete, that is, the reduction in volume when hardened in air, is due to the destruction of the capillary pores of the concrete and the humidity of the air, and to the chemistry of the colloidal part of the cement. And caused by physical reactions. Here we list only the main factors that affect the shrinkage of concrete, namely the type of cement, the composition of concrete, the type of aggregate, the ratio of water to cement, the age at which concrete begins to lose water, and the size of the specimen.