推荐回答(1个)
加气混凝土砌块砌体工程施工操作工艺如下:
1、墙体放线:墙体施工前,应将基础顶面或楼层结构面按标高找平,依据图纸放出第一皮砌块的轴线,砌体的边线及门窗洞口位置线。
2、砌块提前2d 进行浇水湿润,浇水时把砌块上的浮尘冲洗干净。
3、根据砌块砌体标高要求立好皮数杆,皮数杆立在砌体的转角处,纵向长度一般不应大于15m 立一根。
4、配制砂浆:按设计要求的砂浆品种、强度等级进行砂浆配制,配合比由试验室确定。采用重量比,计量精度为水泥±2%,砂、石灰膏控制在±5%以内,应采用机械搅拌,搅拌时间不少于1.5min。
5、砌块的排列:应根据工程设计施工图纸,结合砌块的品种规格,绘制砌体砌块的排列图,经审核无误后,按图进行排列。
6、排列应从基础顶面或楼层面进行,排列时应尽量采用主规格的砌块,砌体中主规格砌块应占总量的80%以上。
7、砌块排列上下皮应错缝搭砌,搭砌长度一般为砌块长度的1/3,也不应小于150mm。
8、外墙转角处及纵横墙交接处,应将砌块分皮咬搓,交错搭砌,砌体砌至门窗洞口边非整块时,应用同品种的砌块加工切割成。不得用其它砌块或砖镶砌。
9、砌体水平灰缝厚度一般为15mm,如果加网片筋的砌体水平灰缝的厚度为20~25mm,垂直灰缝的厚度为20mm,大于30mm 的垂直灰缝应用C20 级细石混凝土灌实。
10、砌块砌体与结构构件位置有矛盾时,应先满足构件要求。
11、铺砂浆:将搅拌好的砂浆通过吊斗或手推车运至砌筑地点,在砌块就位前用大铁锹、灰勺,进行分块铺灰,较小的砌块量大铺灰长度不得超过1500mm。
12、砌块就位与校正:砌块砌筑前应把表面浮尘和杂物清理干净,砌块就位应先远后近,先下后上,先外后内,应从转角处或定位砌块处开始,吊砌一皮校正一皮。
13、砌块就位与起吊应避免偏心,使砌块底面水平下落,就位时由人手扶控制对准位置,缓慢的下落,经小撬棍微撬,拉线控制砌体标高和墙面平整度,用托线板挂直,校正为止。
14、竖缝灌砂浆:每砌一皮砌块就位后,用砂浆灌实直缝,随后进行灰缝的勒缝(原浆勾缝),深度一般为3~5mm。
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