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一、工程概况某机关主楼外墙发生渗漏,室内墙面出现水迹、装饰层被水泡坏、已严重影响使应。该楼外墙面采用了干挂石材,石材与主体墙之间有空隙,每块石材之间的拼缝嵌有密缝胶,从现场观测渗水主要部位在外墙窗的部位。二、渗漏原因分析:1、外墙干挂石材原拼缝密缝胶已老化,失去防水密封作用;2、由于该外墙干挂石材装饰层施工已多年,在温度或外部作用力(风压力)的影响,石材装饰层有发生变形现象,导致石材拼缝处快老化的密封胶开裂与拉断;3、原外墙施工单位在进行外墙干挂石材施工时,可能施工不规范、石材接缝部外部位缝隙太小或无缝而无法嵌填适应变形的密缝胶,导致外墙石材局部拼缝无适应变形的防水
First, the general situation of the project A leakage occurs in the outer wall of the main building of an organ, water marks appear on the interior wall, and the decorative layer is badly blistered, which has seriously affected the application. The floor outside the wall with dry hanging stone, there is a gap between the stone and the main wall, between each piece of stitching seam embedded glue, from the site observation of the main parts of water seepage in the outer wall of the window. Second, the leakage causes analysis: 1, the original dry wall hanging stone seam glue seam aging, loss of waterproof seal; 2, due to the wall dry hanging stone decorative layer construction has been for many years, the temperature or external force Wind pressure), the deformation of the stone decorative layer phenomenon, leading to fast aging of the stone patchwork sealant crack and pull off; 3, the original external wall construction unit in the construction of external wall hanging stone, construction may not be standardized , The outer part of the stone joints of the gap is too small or seamless and can not be embedded in the deformation of the deformation of the adhesive seam, leading to local wall joints without tailoring deformation of the waterproof