一、为什么要洇砖?普通粘上砖的吸水率很强,一块干砖能吸水500克,含水率达20%干砖上墙马上可吸走砂浆中的水分,降低了砂浆中水泥的水化作用,使砂浆和砖之间形成了一层软弱膜,影响了粘结力。试验证明,干砖上墙砌体抗压强度降低15%以上,抗 1. Why do you want to pick up bricks? The water absorption rate of ordinary clay bricks is very strong. A dry brick can absorb 500 grams of water and the moisture content reaches 20%. The moisture on the dry brick walls immediately absorbs the moisture in the mortar and reduces the water content of the cement in the mortar. As a result, a weak film is formed between the mortar and the brick, which affects the adhesive force. Tests have proven that the compressive strength of masonry walls on dry bricks is reduced by more than 15%.