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用半干法制砖,因为在松散的粘土粉末中没有足够的水分,所以必须施加较大的压力,使粘土颗粒紧密挤合,并发生变形,从而扩大总接触表面,借表面分子力的作用,使粘土颗粒机械粘结。这就是半干法压制砖坯的物理突质。在其它条件相同的情况下,砖坯的强度愈高,制得的砖的强度也愈高。而砖坯的强度与粘土粉末的性质和压制条件有关。砖坯强度和密实度也有密切的关系。砖坯的容重愈大,或与此相应的空隙度愈小,则砖
With semi-dry bricks, because there is not enough water in the loose clay powder, large pressure must be applied to make the clay particles tightly packed and deformed, thereby expanding the total contact surface, by surface molecular forces, The clay particles are mechanically bonded. This is the semi-dry method of pressing the physical surface of the brick. Under the same other conditions, the higher the strength of the brick, the higher the strength of the resulting brick. The strength of the brick is related to the nature of the clay powder and the pressing conditions. Brick strength and compactness are also closely related. The larger the bulk density of the brick, or the smaller the corresponding void, the brick