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1、目录第一章工程概况······························································2第二章钢筋混凝工程通病治理················································2第一节砼表面麻面、露筋、蜂窝、孔洞·····································2第二节施工缝处砼结合不好··················································3第三节
2、缺棱掉角······························································3第四节砼板面不平整·························································3第五节砼结构构件轴线位移··················································4第六节砼柱、梁的外形偏差、表面平整差····································4第七节
3、砼强度偏低、匀质性差················································4第八节砼保护层破坏或砼保护性能不良·······································5第九节砼收缩裂缝·····························································5第十节砼温度裂缝·····························································
4、5第十一节砼沉陷裂缝····························································6第十二节砼张抗裂缝····························································6第十三节砼化学裂缝····························································6第十四节砼冻胀裂缝···································
5、·························7第十五节砼构件制作、运输、安装裂缝·········································77砼质量通病修补方案第一章、工程概况：1、工程名称：银河城项目一期工程1#、2#、3#、6#、7#、8#、9#、12#～16#、20#～24#、28～32#、36#～38#楼住宅工程地址：沈阳市西南，二环与三环之间于洪新城范围内勘察单位：沈阳市勘察测绘研究院设计单位：新大陆建筑设计有限公司建设单位：沈阳华锐置业有限公司监理单位：沈阳市建都
6、工程建设监理有限公司施工单位：黑龙江省第一建筑工程公司辽宁分公司银河城工程第一项目经理部2、结构类型、层数及总高度：本工程为框架结构，地上3层，总高度为10.95m。3、结构概况：3.1基础：基础形式1#、2#、3#、6#、7#、8#、9#、12#～16#、20#～24#、28～32#、36#～38#基础形式为独立基础。3.2混凝土强度C25。第二章、钢筋混凝工程通病治理第一节、砼表面麻面、露筋、蜂窝、孔洞。现象：(1)、砼表面局部缺浆粗糙,有许多小凹坑。(2)、结构内的主筋、副筋或箍筋外露。7(3)、砼
7、局部缺浆石子多,形成蜂窝状的孔洞。(4)、砼结构内有空腔,局部无砼,蜂窝特别大。处理方法：(1)、麻面部位用清水刷洗,充分湿润后用水泥浆或水泥砂浆抹平。(2)、将外露钢筋上的砼和铁锈清洗干净,再用水泥砂浆(1:2比例)抹压平整。如露筋较深,应将薄弱砼剔除,清理干净,用高一级的豆石砼捣实,认真养护。(3)、小蜂窝可先用水冲洗干净,用1:2水泥砂浆修补;大蜂窝,先将松动的石子和突出颗粒剔除,并剔成喇叭口,然后用清水冲洗干净湿透,再用高一级豆石砼捣实,认真养护。(4)、在处理梁中孔洞时,应在梁底用支撑支牢,然后
8、再将孔洞处的不密实的砼凿掉,要凿成斜形,以便浇筑砼。用清水冲刷干净,并保持湿润72小时,然后用高一等级的豆石砼浇筑。在豆石砼中掺万分之一用量的铝粉。浇筑后加强养护。有时因孔洞大需支模板后才浇筑砼。第二节、施工缝处砼结合不好现象：施工缝处砼结合不好,有缝隙或夹有杂物,造成结构整体性不好。处理方法：(1)、缝隙较细时,可用清水冲洗裂缝,充分湿润后抹水泥浆。(2)、梁柱等在补强前,首先应搭设临时支撑予以加固后方可进行剔凿工作。清洗干
