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防止外墻巖棉板脫落幾個要點
如何(he)防止外墻巖(yan)棉板脫落
(1)做(zuo)好保溫(wen)系統材料選取和控制
河南巖棉板控(kong)制(zhi)建筑外(wai)墻(qiang)保溫系統中聚合(he)物砂漿、外(wai)墻(qiang)巖(yan)(yan)棉板(ban)材及(ji)錨(mao)栓等(deng)材料的質量(liang)(liang)。膠粘(zhan)劑應(ying)科學(xue)配比,保證聚合(he)物含(han)量(liang)(liang)及(ji)配套助劑等(deng);保溫板(ban)質量(liang)(liang)應(ying)合(he)格(ge),精選優質巖(yan)(yan)棉板(ban)廠家的貨、對于巖(yan)(yan)棉、XPS板(ban)、PU板(ban)等(deng)應(ying)采取相應(ying)措施加強(qiang)(qiang),比如巖(yan)(yan)棉板(ban)應(ying)加強(qiang)(qiang)錨(mao)栓固(gu)定,XPS板(ban)應(ying)增(zeng)刷界(jie)面劑改善粘(zhan)結性(xing)等(deng)等(deng)。錨(mao)栓在選擇時應(ying)根據(ju)基層墻(qiang)體類(lei)(lei)型選擇錨(mao)栓類(lei)(lei)型以及(ji)錨(mao)栓深(shen)度,確保達到錨(mao)固(gu)力要(yao)求,防止錨(mao)栓錨(mao)固(gu)力失效,沒有達到錨(mao)固(gu)作(zuo)用(yong)。
(2)墻體(ti)保溫系統設計合理
墻體保(bao)溫(wen)工(gong)程(cheng)是一(yi)個(ge)系統(tong)工(gong)程(cheng),設(she)計(ji)時需(xu)考慮各構造層的匹(pi)配(pei)性,對于自身強度較低(di)或粘結性差的材料需(xu)設(she)計(ji)錨栓加固、提(ti)高外(wai)墻巖(yan)棉板粘結率等;外(wai)飾面選取時應與保(bao)溫(wen)系統(tong)相匹(pi)配(pei),宜設(she)計(ji)為透氣(qi)性好的涂裝(zhuang)系統(tong),對設(she)計(ji)面磚(zhuan)的應采用柔(rou)性面磚(zhuan),并合(he)理設(she)計(ji)分隔縫。
(3)加強施工控制
施工(gong)(gong)作為建筑墻體(ti)保(bao)(bao)溫工(gong)(gong)程(cheng)質量(liang)控制(zhi)的薄弱環節,施工(gong)(gong)前(qian),需做好(hao)基(ji)層墻體(ti)檢查驗收,確保(bao)(bao)基(ji)層的拉伸(shen)粘結(jie)強度(du)(du)滿足規(gui)范(fan)要求,墻面平整度(du)(du)在可控范(fan)圍內,且無(wu)空鼓、粉化(hua)、油污等(deng)影(ying)響(xiang)粘貼的現象;河(he)南巖(yan)棉板(ban)保(bao)(bao)溫施工(gong)(gong)時需要加強施工(gong)(gong)工(gong)(gong)藝(yi)控制(zhi),保(bao)(bao)證粘結(jie)砂(sha)漿(jiang)的涂布率,避免(mian)外墻巖(yan)棉板(ban)虛貼,錨栓虛打,干掛(gua)網等(deng)不規(gui)范(fan)做法;保(bao)(bao)溫系統施工(gong)(gong)前(qian)后,應注意天氣變(bian)化(hua)和成品保(bao)(bao)護,避免(mian)砂(sha)漿(jiang)固化(hua)前(qian),雨水沖刷或(huo)陽光曝曬。