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一、混凝土孔结构状态变化混凝土中主要孔体积形成,首先与加水量有关。当用水量为160～240升/米~3,水泥用量为300～600公斤/米~3时,硬化混凝土中游离水体积平均为混凝土体积的5～20％。水泥石或混凝土中,这些孔形成毛细孔体系。毛细孔可以是连续也可成为断续结构。随着硬化条件不同,毛细孔将被水或空气填充。混凝土中孔的形成,可由下列因素引
First, the concrete pore structure changes in the state of the main pore volume in the formation of concrete, first with the amount of water. When the water consumption is 160-240 liters/m~3 and the cement dosage is 300~600 kg/m~3, the free water volume in the hardened concrete averages 5 to 20% of the concrete volume. In cement stone or concrete, these pores form a capillary system. The pores can be continuous or discontinuous. With different hardening conditions, the pores will be filled with water or air. The formation of holes in concrete can be induced by the following factors: