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知道的说说屋顶有裂缝怎么装修

知道的说说屋顶有裂缝怎么装修

浏览：51次 | 提问时间： 06-22 09:10

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2个答案

她以命 06-22 09:11

一、楼板裂缝，需要根据不同的裂缝原因给出不同的处理方法。二、裂缝的分类：裂缝可分为受力裂缝和非受力裂缝。1、受力裂缝是由地基不均匀沉降、混凝土强度、板厚等因素引起的；2、非受力裂缝是由温度、混凝土的收缩、施工等因素引起的，它出现的时间有早有晚，早期的干缩裂缝在浇筑完成约2～4个小时就会出现，部分温度裂缝在竣工验收后三个月至半年内才出现。其中施工因素主要有板负筋保护层偏大(钢筋严重踩塌)、板底混凝土保护层不足或砂的氯盐含量超标。三、处理方法：(1)对混凝土中水泥安定性不合格或者水泥不同品种混用发生化学反应而导致的破坏性裂缝，须进行彻底处理，即将混凝土打掉重新浇筑。(2)对受力产生的裂缝，可根据裂缝出现的原因，有针对性地采取加固补强措施。如果对已影响到结构安全的楼板裂缝，除了沿缝凿成V字形凹槽冲洗干净，将环氧树脂液用压力灌入缝内封闭外，还要用粘扁钢或碳纤维布等措施对楼板进行加固。当用碳纤维布加固时，对单条裂缝，除了沿缝粘贴外还要在垂直于缝方向间距布宽粘贴；对相互交叉的多条缝要井字形粘贴，间距同布宽。(布宽300mm左右为宜)(3)对由温度、混凝土的收缩、施工等因素引起的非受力裂缝处理如下：1、对于一般混凝土楼板表面的龟裂，可先将裂缝清洗干净，待干燥后用环氧树脂液灌缝或用表面涂刷封闭。施工中若在终凝前发现龟裂时，可用抹压一遍处理。2、对其它一般裂缝(宽度在0.05mm～0.2mm之间)的处理，其施工顺序为：清洗板缝后用1：2或1：1水泥砂浆抹缝，压平养护，封闭以恢复观感即可。(仅限于缝的数量少且非通长、贯通的缝)3、对当裂缝(宽度大于0.2mm)较大时，应沿裂缝凿八字形凹槽，冲洗干净后，用1：2水泥砂浆抹平，也可以采用环氧胶泥嵌补。(仅限于缝的数量少且非通长、贯通的缝)4、对当楼板出现裂缝面积较大时，应对楼板进行静载试验，检验其结构安全性，必要时可在楼板上增做一层钢筋网片，以提高板的整体性。或在板面用环氧树脂液灌缝封闭(作一层防水也行)，在板底用碳纤维布粘贴成井字形，间距同布宽。5、对通长、贯通的危险结构裂缝，裂缝宽度大于0.2mm的处理方法也为：除了沿缝凿成V字形凹槽冲洗干净，将环氧树脂液用压力灌入缝内封闭外，还要用粘扁钢或碳纤维布等措施对楼板进行加固。当用碳纤维布加固时，对单条裂缝，除了沿缝粘贴外还要在垂直于缝方向间距布宽粘贴；对相互交叉的多条缝要井字形粘贴，间距同布宽。(布宽300mm左右为宜)6、对通长、贯通与非通长、贯通裂缝共同组成数量又多时板底只有纵横都粘贴。

彼此的是愛不是負荷 06-22 09:19

若是贯通缝，可以到建设局的质量监管部门投诉，若是小纹裂，可以忽略其负面影响。使用方法：先用钢丝刷或砂纸等工具把要处理的裂缝表面粉尘、油污等杂质清理干净，可用水清洗，但处理后保证表面无水；在使用前，先把没有开盖的产品上下颠倒摇晃1分；开盖后，用硬毛刷沿裂缝涂刷漏无忧产品，涂刷宽度大约3－5厘米，涂刷时尽量使产品流入裂缝，增大产品与基面的粘接面积，涂刷厚度约1．5毫米；建议涂刷两遍，一遍涂刷之后，渗入到裂缝会在表面形成凹槽，2时后再涂刷第二遍，第二遍涂刷可以把表面凹槽填满，如果表面还有凹槽痕迹不影响防水效果。注意：雨天不能施工。理论上每升可涂刷40米左右的裂缝，或1．4平方米的渗水面积。

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