挤塑聚苯乙烯泡沫板外墙保温重点项目施工专项方案.doc

无机硅酸盐水泥泡沫保温板 外墙保温 施 工 方 案 目 录 1 工程概况·····························12 材料组成·····························13 施工要求及条件·····························1 4 施工工具·····························25 工艺步骤·····························2 5．1 基层清理·····························25．2 配制砂浆·····························35．3 刷专用界面剂一道·····························35．4 预粘板端翻包网格布·····························35．5 粘贴保温板·····························35．6 安装固定件·····························6 5．7 打底····························· 85．8 滴水槽·····························85．9 设置伸缩缝·····························95．10 涂刷专用界面剂·····························9 5．11 抹第一遍面层聚合物抗裂砂浆·····························9 5．11 抹第一遍面层聚合物抗裂砂浆·····························95．12 埋贴网格布·····························9 5．13 抹面层聚合物抗裂砂浆·····························11 6 细部及特殊部位做法·····························147 安全方法······························16 8 文明施工及成品保护·····························179 成本降低方法·····························1710 环境保护方法·····························18 1 工程概况本工程为框架结构，标准 层，建筑高度 m，建筑面积 m2。本工程楼体外墙采取无机硅酸盐水泥泡沫保温板为关键保温隔热材料，以粘、钉结合方法和墙身固定，抗裂砂浆复合耐碱玻纤网格布为保护增强层，涂料饰面外墙保温系统。 2 材料组成? 2.1 无机硅酸盐水泥泡沫保温板规格为1200mm×600mm×60mm，平头式，阻燃型，表观密度25～32kg/m3，尺寸收缩率小于1.5%，吸水率小于1.5%。2.2 专用聚合物粘结、面层砂浆厂家已配制好，现场施工时加水用手持式电动搅拌机搅拌，重量比为水:聚合物砂浆等于1:5，可操作时间大于2h。2.3 固定件 采取自攻螺栓配合工程塑料膨胀钉固定无机硅酸盐水泥泡沫保温板，要求单个固定件抗拉承载力标准值大于0.6kN。2.4 耐碱玻纤网格布用于增强保护层抗裂及整体性；孔径4mm×4mm，宽度1000mm，每卷长度100m。2.5 聚乙烯泡沫塑料棒 用于填塞膨胀缝，作为密封膏隔离背衬材料，其直径根据缝宽1.4 倍选择。3 施工要求及条件3.1 经业主、监理、总包、外保温施工单位联合验收外墙体（可分段进行）垂直、平整度满足规范要求，门窗框安装到位，飘窗、阳台栏板、挑檐等突出墙面部位尺寸合格，办理交接单后即可进行施工。3.2 雨天施工时，须采取有效防雨方法，预防雨水冲刷刚施工完但粘结砂浆或面层聚合物砂浆还未初凝墙面。3.3 施工现场环境温度及找平层表面温度在施工中及施工后24h 内均不得低于5℃，风力小于5 级。4 施工工具 电热丝切割器或壁纸刀（裁保温板及网格布用）、电锤（拧胀钉螺钉及打膨胀锚固件孔用）、根部带切割刀片冲击钻钻头（为放固定件打眼用，切割刀片大小、切入深度和膨胀钉头一致）、手持式电动搅拌器（搅拌砂浆用）、木锉或粗砂纸（打磨用）、其它抹灰专用工具。 ?5 工艺步骤5.1 基层清理5.1.1 清理墙面上残留浮灰、脱模剂油污等杂物及抹灰空鼓部位等。 5.1.2 剔除接槎处劈裂混凝土块、夹杂物、空鼓等，并重新进行修补；窗台挑檐根据2%用水泥砂浆找坡，外墙多种洞口填塞密实。 ?5.1.3要求粘贴保温板表面平整度偏差不超出4mm，超差时对突出墙面处进行打磨，对凹进部位进行找补（需找补厚度超出6mm 时用1﹕2.5 水泥砂浆抹灰，需找补厚度小