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近几年来,随着粘土砖的限产,蒸压灰砂砖和其它小型砌块已逐步部分代替粘土砖,而使用于砖混结构住宅楼及其它民用建筑中。由于尺寸规整,色泽淡雅,造价与粘土砖基本持平,有些住宅楼及其它建筑还可省去不少外装修费用,因此推广使用较快。但是,由于设计和施工经验不足,出现了一些问题,特别是墙体裂缝问题。 1.某机关住宅楼,4单元6层,从基础到顶全部采用灰砂砖砌筑,基础为钢筋混凝土条基。1～4层采用MU10灰砂砖,M7.5混合砂浆砌筑,5～6层采用MU10灰砂砖,M5混合砂浆砌筑,基础采用MU15灰砂砖,M7.5水泥砂浆砌
In recent years, with the limited production of clay bricks, autoclaved lime sand bricks and other small blocks have gradually replaced clay bricks and are used in brick-concrete residential buildings and other civil buildings. Due to the regular size and light color, the cost is basically the same as that of the clay bricks. Some residential buildings and other buildings can also save a lot of external decoration costs, so the promotion is faster. However, due to lack of design and construction experience, some problems have arisen, especially the cracks in the wall. 1. A residential building of an institution, 4 units and 6 floors, all of which are constructed of sand-lime bricks from the foundation to the top, based on reinforced concrete foundations. 1st to 4th floors are made of MU10 sand-lime bricks, M7.5 mixed mortar, 5 to 6 layers of MU10 sand-lime bricks, M5 mixed mortar, MU15 sand-lime bricks, and M7.5 cement mortar.