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如(ru)何選(xuan)用,材(cai)(cai)料(liao)(liao)有(you)(you)多方面(mian)的(de)(de)(de),每(mei)種(zhong)(zhong)材(cai)(cai)料(liao)(liao)有(you)(you)不(bu)同(tong)(tong)的(de)(de)(de)特點,所以(yi)要選(xuan)擇適合自(zi)(zi)己(ji)的(de)(de)(de)防(fang)水(shui)材(cai)(cai)料(liao)(liao)來防(fang)水(shui)補(bu)(bu)漏工程,選(xuan)擇材(cai)(cai)料(liao)(liao)有(you)(you)好(hao)幾個(ge)因素,比如(ru)當地(di)的(de)(de)(de)氣候(hou)問題(ti)、建筑本身部位(wei)(wei)選(xuan)材(cai)(cai)、工程條件要求(qiu)選(xuan)材(cai)(cai)、建筑功能(neng)要求(qiu)選(xuan)材(cai)(cai)等等,下(xia)面(mian)說(shuo)下(xia)建筑部位(wei)(wei)選(xuan)材(cai)(cai),希(xi)望對大(da)家有(you)(you)用。不(bu)同(tong)(tong)的(de)(de)(de)建筑部位(wei)(wei),對防(fang)水(shui)材(cai)(cai)料(liao)(liao)的(de)(de)(de)要求(qiu)也不(bu)盡相同(tong)(tong)。每(mei)種(zhong)(zhong)材(cai)(cai)料(liao)(liao)都(dou)有(you)(you)各自(zi)(zi)的(de)(de)(de)長(chang)處(chu)和(he)短處(chu),一種(zhong)(zhong)材(cai)(cai)料(liao)(liao)不(bu)能(neng)包打天下(xia),用在什么地(di)方都(dou)好(hao)的(de)(de)(de)材(cai)(cai)料(liao)(liao)是(shi)沒有(you)(you)的(de)(de)(de),各種(zhong)(zhong)材(cai)(cai)料(liao)(liao)只能(neng)互補(bu)(bu),而不(bu)可取代(dai),各自(zi)(zi)有(you)(you)用武之(zhi)地(di)。屋(wu)面(mian)防(fang)水(shui)和(he)地(di)下(xia)室防(fang)水(shui),要求(qiu)材(cai)(cai)性不(bu)同(tong)(tong),而浴間的(de)(de)(de)防(fang)水(shui)和(he)墻面(mian)防(fang)水(shui)更有(you)(you)差別(bie),坡屋(wu)面(mian)、外形復雜(za)的(de)(de)(de)屋(wu)面(mian)、金屬板基層(ceng)屋(wu)面(mian)也不(bu)相同(tong)(tong),選(xuan)材(cai)(cai)時均當細酌。
如果(guo)是露天(tian)陽(yang)臺,要進(jin)行補(bu)漏(lou)可(ke)以用柏油(you)跟防(fang)水(shui)布雙重(zhong)結合的(de)方式來進(jin)行,如果(guo)是封閉(bi)式或者半封閉(bi)式陽(yang)臺,這(zhe)樣的(de)隱蔽工程是可(ke)以找來進(jin)行補(bu)漏(lou)處理(li),個(ge)人施工還(huan)是有一(yi)定的(de)難度。為了避免(mian)底(di)板和外墻轉角處出(chu)現(xian)滲(shen)漏(lou)現(xian)象,在(zai)(zai)300mm高砼(tong)(tong)(tong)(tong)導(dao)(dao)墻施工嚴格把直(zhi)把質量關,先把底(di)板砼(tong)(tong)(tong)(tong)澆(jiao)筑(zhu)到(dao)吊模(mo)下(xia)口(kou)處的(de)位置,等到(dao)砼(tong)(tong)(tong)(tong)即將補(bu)凝時(shi)再澆(jiao)筑(zhu)導(dao)(dao)墻砼(tong)(tong)(tong)(tong)。導(dao)(dao)墻砼(tong)(tong)(tong)(tong)澆(jiao)筑(zhu)時(shi)必須振(zhen)搗密實(shi),吊模(mo)下(xia)口(kou)翻出(chu)的(de)砼(tong)(tong)(tong)(tong)不(bu)能急于刮除,要特別注(zhu)意(yi)在(zai)(zai)這(zhe)個(ge)時(shi)候導(dao)(dao)墻根部的(de)砼(tong)(tong)(tong)(tong)不(bu)能再振(zhen),以免(mian)出(chu)現(xian)吊腳(jiao),導(dao)(dao)致滲(shen)漏(lou)故障(zhang)的(de)發(fa)生。為了控制(zhi)外墻蜂(feng)窩及裂(lie)縫的(de)產生,砼(tong)(tong)(tong)(tong)施工時(shi)要把握振(zhen)搗和養護關。加強砼(tong)(tong)(tong)(tong)振(zhen)搗,執行“快(kuai)插慢拔”,嚴禁出(chu)現(xian)漏(lou)振(zhen)或過振(zhen)而引起蜂(feng)窩。
現在防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)材(cai)(cai)(cai)(cai)料(liao)首要分為二大(da)類:一(yi)、柔性防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)材(cai)(cai)(cai)(cai)料(liao),如:種材(cai)(cai)(cai)(cai)料(liao)卷材(cai)(cai)(cai)(cai)、JS復合材(cai)(cai)(cai)(cai)料(liao)、聚氨(an)酯防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)材(cai)(cai)(cai)(cai)料(liao)、防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)膠等(deng)(deng)等(deng)(deng)乳液(ye)(ye)性的(de)聚合物防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)材(cai)(cai)(cai)(cai)料(liao)。這些(xie)材(cai)(cai)(cai)(cai)料(liao)首要是包裹住基(ji)面,不(bu)讓水(shui)(shui)(shui)滲出和滲入(ru),這些(xie)材(cai)(cai)(cai)(cai)料(liao)有(you)必(bi)定(ding)(ding)的(de)延伸(shen)率和抗(kang)拉才能。僅有(you)缺(que)陷這些(xie)材(cai)(cai)(cai)(cai)料(liao)有(you)必(bi)定(ding)(ding)的(de)防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)年(nian)限,也就是防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)壽(shou)命(ming)。這些(xie)材(cai)(cai)(cai)(cai)料(liao)廣泛(fan)用(yong)于(yu)的(de)屋(wu)面、衛(wei)生間(jian)、伸(shen)縮縫、落水(shui)(shui)(shui)口、磚石等(deng)(deng)等(deng)(deng)基(ji)面上。二、剛生防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)材(cai)(cai)(cai)(cai)料(liao):望(wang)文生義,它有(you)高(gao)強度(du),但他缺(que)少延伸(shen)率和抗(kang)拉才能,但防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)壽(shou)命(ming)長久施(shi)工后跟混凝土同等(deng)(deng),如:水(shui)(shui)(shui)不(bu)漏、水(shui)(shui)(shui)泥基(ji)浸透結(jie)晶(jing)、浸透防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)劑(ji)、永(yong)凝液(ye)(ye)等(deng)(deng)等(deng)(deng)。它們是使用(yong)混凝土結(jie)構的(de)多孔性透過毛細(xi)管(guan)現像,使用(yong)親水(shui)(shui)(shui)性以水(shui)(shui)(shui)為載體浸透到(dao)混凝土內部,發生化學反應,形成結(jie)晶(jing)體,堵信毛細(xi)孔到(dao)達(da)防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)作用(yong),添加混凝土強度(du),這些(xie)材(cai)(cai)(cai)(cai)料(liao)廣泛(fan)應用(yong)于(yu)地下室、衛(wei)生間(jian)、污水(shui)(shui)(shui)池、蘊水(shui)(shui)(shui)池、也可直接用(yong)于(yu)飲用(yong)水(shui)(shui)(shui)池等(deng)(deng)等(deng)(deng)。所(suo)以現在一(yi)般防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)要求高(gao)的(de),設計上會(hui)用(yong)剛柔結(jie)合的(de)防(fang)(fang)(fang)(fang)水(shui)(shui)(shui)方案!
單(dan)一(yi)的(de)建筑材料雖(sui)然具有一(yi)定的(de)防(fang)(fang)水(shui)(shui)(shui)(shui)性(xing)能(neng)(neng),但必(bi)須(xu)(xu)通(tong)過施工(gong)(gong)(gong)操(cao)作(zuo)與組(zu)合,才能(neng)(neng)構成土木建筑的(de)防(fang)(fang)水(shui)(shui)(shui)(shui)工(gong)(gong)(gong)程(cheng)(cheng)(cheng),并獲得(de)相應(ying)的(de)防(fang)(fang)水(shui)(shui)(shui)(shui)功能(neng)(neng)。因此歷(li)來把施工(gong)(gong)(gong)操(cao)作(zuo)與組(zu)合的(de)完(wan)美(mei)性(xing),視為(wei)防(fang)(fang)水(shui)(shui)(shui)(shui)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)成敗的(de)關鍵。無論是各類防(fang)(fang)水(shui)(shui)(shui)(shui)卷(juan)材還是防(fang)(fang)水(shui)(shui)(shui)(shui)涂(tu)料,均(jun)必(bi)須(xu)(xu)與防(fang)(fang)水(shui)(shui)(shui)(shui)基(ji)層緊密粘貼或黏結,并使(shi)兩者成為(wei)整體后(hou),才能(neng)(neng)有可(ke)靠的(de)防(fang)(fang)水(shui)(shui)(shui)(shui)屏障(zhang)。通(tong)過長期(qi)的(de)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)實踐(jian)和(he)研究后(hou)認為(wei),防(fang)(fang)水(shui)(shui)(shui)(shui)基(ji)層表面(即施工(gong)(gong)(gong)面)必(bi)須(xu)(xu)具備“干(gan)燥、清(qing)潔和(he)適當(dang)溫度”這(zhe)一(yi)防(fang)(fang)水(shui)(shui)(shui)(shui)施工(gong)(gong)(gong)的(de)三大先決條(tiao)件后(hou),方(fang)可(ke)進行柔性(xing)防(fang)(fang)水(shui)(shui)(shui)(shui)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)的(de)施工(gong)(gong)(gong),這(zhe)在中(zhong)外建筑規范(fan)和(he)相關的(de)教材、理論書籍中(zhong)均(jun)有論述(shu)。多年(nian)來隨著(zhu)科學技術的(de)不斷發展,防(fang)(fang)水(shui)(shui)(shui)(shui)工(gong)(gong)(gong)法(fa)也有了(le)很大改(gai)進,諸如為(wei)了(le)減少卷(juan)材起鼓與開裂(lie),可(ke)采用(yong)空鋪(pu)法(fa)、條(tiao)(點)粘法(fa)、熱熔法(fa)、冷粘法(fa)等措施。應(ying)指出,上述(shu)工(gong)(gong)(gong)法(fa)與措施均(jun)有一(yi)定的(de)局限性(xing),而要(yao)使(shi)防(fang)(fang)水(shui)(shui)(shui)(shui)工(gong)(gong)(gong)程(cheng)(cheng)(cheng)做到(dao)滴水(shui)(shui)(shui)(shui)不漏(lou),仍應(ying)全面遵守有關施工(gong)(gong)(gong)條(tiao)件的(de)要(yao)求。
防城港市后澆帶堵漏混凝土澆筑正值7~8月份高溫季節,易造成混凝土坍落度損失加大,降低混凝土工作度方面的要求,加之可能出現的運輸途中堵車或施工中出現臨時需處理的問題,使澆搗速度減緩,延誤了混凝土的入模時間,因時間延長造成混凝土坍落度損失加大,致使不能滿足泵送要求,此時應嚴禁加入生水,而應采取二次摻少量的FDN2I減水劑的后摻法,補償和恢復混凝土的坍落度損失。專業后澆帶堵漏在(zai)(zai)配合比中FDN2I減(jian)(jian)水(shui)劑(ji)量(liang)(liang)為0.8%,地般該減(jian)(jian)水(shui)劑(ji)的(de)摻量(liang)(liang)地高為1%,在(zai)(zai)后摻減(jian)(jian)水(shui)劑(ji)時只(zhi)考慮在(zai)(zai)0.2%以(yi)內(nei)。后摻法比先摻法或(huo)(huo)同摻法在(zai)(zai)相同摻量(liang)(liang)下(xia)減(jian)(jian)水(shui)作用顯著提高,是能(neng)補償坍(tan)落度損失的(de)。但應(ying)注意凡后摻減(jian)(jian)水(shui)劑(ji)的(de)運輸車,應(ying)快速攪(jiao)拌30轉或(huo)(huo)1秒以(yi)上。其(qi)摻量(liang)(liang)和(he)攪(jiao)拌時間由專人負責實(shi)施。
方(fang)(fang)式(shi)(shi)一(yi):根據產(chan)(chan)(chan)品(pin)(pin)(pin)(pin)包裝上(shang)的相關(guan)信(xin)息,向確認(ren)經銷商和產(chan)(chan)(chan)品(pin)(pin)(pin)(pin)的真實(shi)性。方(fang)(fang)式(shi)(shi)二:從現場(chang)鉆孔取樣,進(jin)行特(te)定技(ji)術性能(neng)測試(shi),與合格產(chan)(chan)(chan)品(pin)(pin)(pin)(pin)的標準參數(shu)進(jin)行對比。方(fang)(fang)式(shi)(shi)三:對現場(chang)剩余的水(shui)泥基防水(shui)材料進(jin)行抽樣,通過外表觀(guan)察、氣(qi)味和涂刷(shua)樣品(pin)(pin)(pin)(pin)進(jin)行調查。方(fang)(fang)式(shi)(shi)四:可通過百(bai)度知(zhi)道(dao)、搜狗問(wen)答等平臺查看下產(chan)(chan)(chan)品(pin)(pin)(pin)(pin)生產(chan)(chan)(chan)廠家(jia)的口(kou)碑(bei),如果有(you)大量(liang)的來自多人的負面評價,有(you)必要重視該(gai)產(chan)(chan)(chan)品(pin)(pin)(pin)(pin)存(cun)在(zai)(zai)(zai)質(zhi)量(liang)問(wen)題的可能(neng)性。上(shang)面幾(ji)種方(fang)(fang)式(shi)(shi),相信(xin)能(neng)夠解(jie)決一(yi)部分(fen)人的困擾了。在(zai)(zai)(zai)此也建議廣(guang)大用戶(hu),在(zai)(zai)(zai)選購防水(shui)材料時,選擇一(yi)些比較(jiao)知(zhi)名的防水(shui)品(pin)(pin)(pin)(pin)牌(pai)或在(zai)(zai)(zai)當(dang)地(di)防水(shui)市場(chang)有(you)比較(jiao)好口(kou)碑(bei)的防水(shui)品(pin)(pin)(pin)(pin)牌(pai),這樣就能(neng)大幅度降低這方(fang)(fang)面的風險了。