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(1)外(wai)墻清(qing)洗(xi)第一天(tian)開工(gong)(gong)(gong)(gong)前,現(xian)場(chang)主(zhu)管(guan)需(xu)要(yao)帶領安(an)全員(yuan)檢查(cha)并做好落實安(an)全措施(shi)(shi);(2)待確認安(an)全措施(shi)(shi)無誤,現(xian)場(chang)主(zhu)管(guan)可(ke)指揮作業人員(yuan)進(jin)入工(gong)(gong)(gong)(gong)作區域(yu);(3)外(wai)墻清(qing)洗(xi)施(shi)(shi)工(gong)(gong)(gong)(gong)中隨時保持(chi)高(gao)度警惕(ti),發現(xian)隱(yin)患,應立(li)即采取果(guo)斷措施(shi)(shi)及時糾正;(4)檢查(cha)安(an)全員(yuan)工(gong)(gong)(gong)(gong)作執行情(qing)況,勿(wu)使松(song)懈;(5)每天(tian)協同甲方負責人員(yuan)對工(gong)(gong)(gong)(gong)作進(jin)行驗收,應對出現(xian)的(de)質量問(wen)題及時安(an)排(pai)返工(gong)(gong)(gong)(gong);(6)每天(tian)工(gong)(gong)(gong)(gong)作結束檢查(cha)、驗收無誤后,向(xiang)公司匯報當天(tian)工(gong)(gong)(gong)(gong)作情(qing)況。主(zhu)管(guan)雖然(ran)不用上陣工(gong)(gong)(gong)(gong)作,但是(shi)在底下做好管(guan)理工(gong)(gong)(gong)(gong)作也(ye)相當重要(yao),更(geng)利于提(ti)高(gao)工(gong)(gong)(gong)(gong)作的(de)效率,降低危險性(xing)。
目前(qian)建(jian)(jian)筑(zhu)防(fang)(fang)(fang)(fang)水(shui)材(cai)(cai)(cai)料(liao)(liao)大(da)體上可分(fen)為五(wu)類,即(ji)瀝青(qing)防(fang)(fang)(fang)(fang)水(shui)卷(juan)材(cai)(cai)(cai)、高分(fen)子防(fang)(fang)(fang)(fang)水(shui)片材(cai)(cai)(cai)、建(jian)(jian)筑(zhu)防(fang)(fang)(fang)(fang)水(shui)材(cai)(cai)(cai)料(liao)(liao)、建(jian)(jian)筑(zhu)密封(feng)材(cai)(cai)(cai)料(liao)(liao)及(ji)防(fang)(fang)(fang)(fang)滲堵漏等(deng)特(te)種用途的(de)(de)防(fang)(fang)(fang)(fang)水(shui)材(cai)(cai)(cai)料(liao)(liao)。每(mei)種材(cai)(cai)(cai)料(liao)(liao)各(ge)有其特(te)性(xing),因此(ci)必須(xu)根據的(de)(de)部(bu)(bu)位、條件、所處的(de)(de)環(huan)境、建(jian)(jian)筑(zhu)的(de)(de)等(deng)級、功能需(xu)要,選用適當(dang)的(de)(de)材(cai)(cai)(cai)料(liao)(liao),發揮(hui)各(ge)類材(cai)(cai)(cai)料(liao)(liao)的(de)(de)特(te)性(xing),使之獲得最佳防(fang)(fang)(fang)(fang)水(shui)效果(guo)。依據不同的(de)(de)工(gong)程部(bu)(bu)位來選材(cai)(cai)(cai),其選擇標準也(ye)不一(yi)致。屋(wu)面因長期暴露,陽光、雪雨(yu)直接侵蝕,嚴冬酷暑(shu)溫度變(bian)化(hua)大(da),晝夜之間(jian)屋(wu)面板也(ye)會發生伸(shen)縮,因此(ci)應選用耐老化(hua)性(xing)能好的(de)(de),且有一(yi)定延伸(shen)性(xing)的(de)(de)、耐熱(re)度高的(de)(de)材(cai)(cai)(cai)料(liao)(liao)。如聚脂胎改性(xing)瀝青(qing)卷(juan)材(cai)(cai)(cai)、三元乙丙片材(cai)(cai)(cai)或瀝青(qing)油(you)氈(zhan)等(deng)。
這對(dui)于(yu)大部分(fen)人(ren)來說就(jiu)很難解釋清楚了,介紹防(fang)水(shui)(shui)補漏(lou)機理是以其特有(you)的(de)(de)(de)(de)活(huo)性(xing)化(hua)學(xue)(xue)物質(zhi),利(li)用(yong)(yong)(yong)混(hun)凝(ning)土本身固有(you)的(de)(de)(de)(de)化(hua)學(xue)(xue)性(xing)及(ji)多(duo)孔性(xing),以水(shui)(shui)為載體(ti),借助水(shui)(shui)的(de)(de)(de)(de)滲(shen)透作用(yong)(yong)(yong)與混(hun)凝(ning)土內的(de)(de)(de)(de)化(hua)學(xue)(xue)物質(zhi)產(chan)生(sheng)(sheng)反應,順(shun)著(zhu)(zhu)或逆(ni)著(zhu)(zhu)水(shui)(shui)壓方(fang)向產(chan)生(sheng)(sheng)作用(yong)(yong)(yong),在混(hun)凝(ning)土微孔及(ji)毛(mao)細管中(zhong)傳輸、充盈、催(cui)化(hua)混(hun)凝(ning)土內未(wei)完全水(shui)(shui)化(hua)的(de)(de)(de)(de)成份再(zai)次(ci)發生(sheng)(sheng)化(hua)學(xue)(xue)作用(yong)(yong)(yong),形(xing)成不溶性(xing)的(de)(de)(de)(de)枝蔓狀結(jie)晶(jing)并(bing)與混(hun)凝(ning)土結(jie)合為整體(ti),使任何(he)方(fang)向來的(de)(de)(de)(de)水(shui)(shui)及(ji)其他液體(ti)被(bei)堵塞。解釋當結(jie)構沒(mei)有(you)水(shui)(shui)份時,晶(jing)威的(de)(de)(de)(de)活(huo)性(xing)成份會(hui)保持(chi)靜止狀態,但當與水(shui)(shui)份再(zai)次(ci)接觸時,上(shang)述的(de)(de)(de)(de)化(hua)學(xue)(xue)作用(yong)(yong)(yong)及(ji)封閉(bi)過程便會(hui)重復(fu)發生(sheng)(sheng),而(er)且(qie)會(hui)更深入到(dao)混(hun)凝(ning)土內,從(cong)而(er)達到(dao)長(chang)期性(xing)的(de)(de)(de)(de)防(fang)水(shui)(shui)、防(fang)潮、耐化(hua)學(xue)(xue)腐(fu)蝕的(de)(de)(de)(de)目的(de)(de)(de)(de),同時也起到(dao)保護鋼筋、增強混(hun)凝(ning)土結(jie)構強度(du)的(de)(de)(de)(de)作用(yong)(yong)(yong),可自我修(xiu)復(fu)小(xiao)于(yu)0.41mm的(de)(de)(de)(de)裂縫(feng)。且(qie)對(dui)人(ren)體(ti)無(wu)害、易(yi)于(yu)施工(gong)等(deng)特點,廣泛應用(yong)(yong)(yong)于(yu)工(gong)業與民用(yong)(yong)(yong)建筑的(de)(de)(de)(de)地(di)下結(jie)構、地(di)鐵、橋梁、路面、飲用(yong)(yong)(yong)水(shui)(shui)廠、污水(shui)(shui)處理廠、電站、水(shui)(shui)利(li)等(deng)工(gong)程。
對于目前正規地下室防水修繕的施工技術工藝來說,建筑物的外墻通常不會出現大面積的滲漏現象,然而,這部分極易被人疏忽,外墻的滲水會對建筑的正常使用造成更嚴重的影響。建筑外墻滲水現象的起因多樣,除了人為原因,一般多因為建筑結構的變形,接縫不嚴密,外墻中的管道季節性的破裂等等,由于原因多樣,并且伴有連鎖反應,要求施工與維修人員在對外墻滲水事故的治理中應根據實地實際,查明原因,找出根源,細致分析采取具有針對性的、能夠治根的辦法進行維修。河池市地下室防水修繕發現施工材(cai)料對于外墻滲(shen)(shen)水漏水仍(reng)然(ran)是事(shi)故的(de)主(zhu)要原因,建筑材(cai)料主(zhu)要采用普通混凝土(tu),雖然(ran)不易產生(sheng)滲(shen)(shen)水事(shi)故,但這樣材(cai)質發生(sheng)的(de)外墻滲(shen)(shen)漏事(shi)故的(de)出現比率高達百分之九十以上(shang),如何在建筑材(cai)料的(de)升級與(yu)技術革新上(shang),解決滲(shen)(shen)水的(de)頑疾,需要引起(qi)土(tu)建工作者高度關注。
混凝土(tu)澆筑正值7~8月份高(gao)溫季節,易造成混凝土(tu)坍(tan)(tan)落度(du)(du)(du)損(sun)(sun)失(shi)加大,降低混凝土(tu)工作度(du)(du)(du)方面(mian)的要求,加之可能(neng)出現(xian)的運(yun)輸途中堵(du)車或施(shi)工中出現(xian)臨(lin)時(shi)需處理的問(wen)題,使澆搗速度(du)(du)(du)減(jian)緩(huan),延誤了混凝土(tu)的入(ru)模(mo)時(shi)間,因時(shi)間延長(chang)造成混凝土(tu)坍(tan)(tan)落度(du)(du)(du)損(sun)(sun)失(shi)加大,致使不能(neng)滿足(zu)泵送要求,此時(shi)應(ying)嚴禁加入(ru)生水(shui)(shui),而應(ying)采取(qu)二次摻少量的FDN2I減(jian)水(shui)(shui)劑(ji)(ji)的后(hou)摻法,補償和恢(hui)復(fu)混凝土(tu)的坍(tan)(tan)落度(du)(du)(du)損(sun)(sun)失(shi)。在(zai)配合比中FDN2I減(jian)水(shui)(shui)劑(ji)(ji)量為0.8%,地般該(gai)減(jian)水(shui)(shui)劑(ji)(ji)的摻量地高(gao)為1%,在(zai)后(hou)摻減(jian)水(shui)(shui)劑(ji)(ji)時(shi)只考慮在(zai)0.2%以內。后(hou)摻法比先(xian)摻法或同(tong)摻法在(zai)相同(tong)摻量下減(jian)水(shui)(shui)作用顯著(zhu)提高(gao),是(shi)能(neng)補償坍(tan)(tan)落度(du)(du)(du)損(sun)(sun)失(shi)的。但(dan)應(ying)注(zhu)意凡后(hou)摻減(jian)水(shui)(shui)劑(ji)(ji)的運(yun)輸車,應(ying)快速攪拌(ban)30轉或1秒以上。其(qi)摻量和攪拌(ban)時(shi)間由專(zhuan)人負責實(shi)施(shi)。