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這對于(yu)大部分(fen)人來說就(jiu)很難解釋清楚了(le),介紹防水(shui)補漏機理是以其特有的(de)(de)活性(xing)化(hua)(hua)(hua)學物質(zhi)(zhi),利(li)用(yong)混凝土本身固有的(de)(de)化(hua)(hua)(hua)學性(xing)及多孔(kong)性(xing),以水(shui)為(wei)載體,借助水(shui)的(de)(de)滲(shen)透(tou)作(zuo)用(yong)與混凝土內(nei)(nei)的(de)(de)化(hua)(hua)(hua)學物質(zhi)(zhi)產(chan)生(sheng)反應(ying),順著(zhu)或逆著(zhu)水(shui)壓方向產(chan)生(sheng)作(zuo)用(yong),在混凝土微孔(kong)及毛(mao)細管中(zhong)傳(chuan)輸、充盈(ying)、催化(hua)(hua)(hua)混凝土內(nei)(nei)未完全水(shui)化(hua)(hua)(hua)的(de)(de)成份再次(ci)發生(sheng)化(hua)(hua)(hua)學作(zuo)用(yong),形成不溶性(xing)的(de)(de)枝蔓狀結(jie)晶(jing)并與混凝土結(jie)合為(wei)整體,使任何方向來的(de)(de)水(shui)及其他液體被堵(du)塞。解釋當結(jie)構(gou)沒有水(shui)份時(shi),晶(jing)威(wei)的(de)(de)活性(xing)成份會保持(chi)靜止狀態,但當與水(shui)份再次(ci)接觸時(shi),上(shang)述的(de)(de)化(hua)(hua)(hua)學作(zuo)用(yong)及封(feng)閉過(guo)程便會重復發生(sheng),而(er)且(qie)會更深入到(dao)混凝土內(nei)(nei),從(cong)而(er)達到(dao)長期(qi)性(xing)的(de)(de)防水(shui)、防潮、耐化(hua)(hua)(hua)學腐(fu)蝕的(de)(de)目的(de)(de),同(tong)時(shi)也起到(dao)保護鋼筋、增強混凝土結(jie)構(gou)強度的(de)(de)作(zuo)用(yong),可(ke)自我修復小(xiao)于(yu)0.41mm的(de)(de)裂縫。且(qie)對人體無(wu)害、易(yi)于(yu)施工等特點,廣泛應(ying)用(yong)于(yu)工業與民(min)用(yong)建筑的(de)(de)地下結(jie)構(gou)、地鐵、橋梁、路面、飲用(yong)水(shui)廠、污(wu)水(shui)處(chu)理廠、電站、水(shui)利(li)等工程。
如何選(xuan)(xuan)用,材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)有(you)(you)多方(fang)面(mian)的(de)(de),每(mei)種(zhong)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)有(you)(you)不(bu)(bu)(bu)同(tong)(tong)的(de)(de)特點,所(suo)以要選(xuan)(xuan)擇適(shi)合自(zi)己的(de)(de)防(fang)(fang)(fang)水(shui)(shui)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)來防(fang)(fang)(fang)水(shui)(shui)補漏工程,選(xuan)(xuan)擇材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)有(you)(you)好(hao)幾個因素,比如當地(di)的(de)(de)氣(qi)候問題、建筑本身部位(wei)選(xuan)(xuan)材(cai)(cai)(cai)(cai)(cai)、工程條件要求(qiu)(qiu)選(xuan)(xuan)材(cai)(cai)(cai)(cai)(cai)、建筑功能(neng)要求(qiu)(qiu)選(xuan)(xuan)材(cai)(cai)(cai)(cai)(cai)等等,下(xia)(xia)面(mian)說(shuo)下(xia)(xia)建筑部位(wei)選(xuan)(xuan)材(cai)(cai)(cai)(cai)(cai),希(xi)望對(dui)大(da)家有(you)(you)用。不(bu)(bu)(bu)同(tong)(tong)的(de)(de)建筑部位(wei),對(dui)防(fang)(fang)(fang)水(shui)(shui)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)的(de)(de)要求(qiu)(qiu)也不(bu)(bu)(bu)盡相(xiang)同(tong)(tong)。每(mei)種(zhong)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)都(dou)有(you)(you)各自(zi)的(de)(de)長處和短處,一種(zhong)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)不(bu)(bu)(bu)能(neng)包打天下(xia)(xia),用在什么地(di)方(fang)都(dou)好(hao)的(de)(de)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)是沒(mei)有(you)(you)的(de)(de),各種(zhong)材(cai)(cai)(cai)(cai)(cai)料(liao)(liao)(liao)只能(neng)互(hu)補,而(er)不(bu)(bu)(bu)可取(qu)代,各自(zi)有(you)(you)用武(wu)之地(di)。屋面(mian)防(fang)(fang)(fang)水(shui)(shui)和地(di)下(xia)(xia)室防(fang)(fang)(fang)水(shui)(shui),要求(qiu)(qiu)材(cai)(cai)(cai)(cai)(cai)性(xing)不(bu)(bu)(bu)同(tong)(tong),而(er)浴間的(de)(de)防(fang)(fang)(fang)水(shui)(shui)和墻面(mian)防(fang)(fang)(fang)水(shui)(shui)更有(you)(you)差(cha)別(bie),坡(po)屋面(mian)、外形復(fu)雜的(de)(de)屋面(mian)、金屬板基層屋面(mian)也不(bu)(bu)(bu)相(xiang)同(tong)(tong),選(xuan)(xuan)材(cai)(cai)(cai)(cai)(cai)時均(jun)當細(xi)酌(zhuo)。
正規涵洞漏水堵漏發現對眾多堵漏材料和防水材料的技術性能不了解,不重視研究防水技術,國內的防水堵漏材料大多不過關。施工時不找漏水點、漏水線;見縫漏水即騎縫打眼灌漿;見墻面滲水即滿墻打眼灌漿或在墻面涂刷表面材料;見沉降縫漏水即剔鑿填充剛性防水材料或灌注熱瀝青堵漏等等,梧州市涵洞漏水堵漏提示這(zhe)種盲(mang)目(mu)打眼、盲(mang)目(mu)灌(guan)漿(jiang)(jiang)、盲(mang)目(mu)堵(du)(du)(du)漏(lou)(lou)(lou)的最(zui)終結果(guo)是鉆孔不進(jin)漿(jiang)(jiang)或不易進(jin)漿(jiang)(jiang),沉降(jiang)縫堵(du)(du)(du)剛性(xing)防(fang)水材(cai)料,裂縫后(hou)繼續漏(lou)(lou)(lou)水,未真(zhen)正將(jiang)漏(lou)(lou)(lou)水點(dian)、漏(lou)(lou)(lou)水線(xian)、漏(lou)(lou)(lou)水縫堵(du)(du)(du)嚴,造(zao)成堵(du)(du)(du)漏(lou)(lou)(lou)不成功;單純采用(yong)各種材(cai)料在砂漿(jiang)(jiang)層或混凝土(tu)表(biao)面(mian)涂刷(shua)成膜堵(du)(du)(du)漏(lou)(lou)(lou),忽視了隱蔽漏(lou)(lou)(lou)水點(dian)、漏(lou)(lou)(lou)水縫的處理,只有點(dian)堵(du)(du)(du)、線(xian)堵(du)(du)(du)和面(mian)涂堵(du)(du)(du)漏(lou)(lou)(lou)相結合才(cai)能成功;對重點(dian)漏(lou)(lou)(lou)水部位和沉降(jiang)縫堵(du)(du)(du)漏(lou)(lou)(lou)應采用(yong)多道(dao)防(fang)水線(xian)。
鋼(gang)(gang)筋(jin)(jin)工(gong)(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)(gong)過程(cheng)中,首先,鋼(gang)(gang)筋(jin)(jin)制作(zuo)時要(yao)注(zhu)意(yi)(yi)鋼(gang)(gang)筋(jin)(jin)材(cai)料是否合格、鋼(gang)(gang)筋(jin)(jin)堆放要(yao)妥(tuo)當避(bi)免銹蝕、鋼(gang)(gang)筋(jin)(jin)表面應潔凈、統籌配(pei)料、鋼(gang)(gang)筋(jin)(jin)切斷端頭不應有劈裂、縮頭及嚴重彎頭:其次(ci),鋼(gang)(gang)筋(jin)(jin)綁扎必須(xu)牢固,鋼(gang)(gang)筋(jin)(jin)的(de)排布順序要(yao)正(zheng)確以及鋼(gang)(gang)筋(jin)(jin)的(de)保護層厚度要(yao)達到(dao)要(yao)求:最(zui)后(hou)要(yao)注(zhu)意(yi)(yi)一(yi)些細節的(de)施(shi)工(gong)(gong)(gong)(gong)技術,如鋼(gang)(gang)筋(jin)(jin)骨架(jia)的(de)尺寸、馬凳撐、錨固長度等(deng)。混(hun)凝土(tu)施(shi)工(gong)(gong)(gong)(gong)過程(cheng)中,要(yao)注(zhu)意(yi)(yi)混(hun)凝土(tu)的(de)配(pei)合比、澆(jiao)(jiao)筑前得準備工(gong)(gong)(gong)(gong)作(zuo)要(yao)到(dao)位、振搗工(gong)(gong)(gong)(gong)作(zuo)要(yao)按要(yao)求、施(shi)工(gong)(gong)(gong)(gong)縫的(de)留設要(yao)合理、混(hun)凝土(tu)的(de)養護要(yao)到(dao)位、注(zhu)意(yi)(yi)特殊天氣下混(hun)凝土(tu)的(de)施(shi)工(gong)(gong)(gong)(gong)。后(hou)澆(jiao)(jiao)帶(dai)施(shi)工(gong)(gong)(gong)(gong)過程(cheng)中,要(yao)注(zhu)意(yi)(yi)后(hou)澆(jiao)(jiao)帶(dai)周邊混(hun)凝土(tu)施(shi)工(gong)(gong)(gong)(gong)質量(liang),以及后(hou)澆(jiao)(jiao)帶(dai)的(de)鋼(gang)(gang)筋(jin)(jin)保護。