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防水難點

2020-03-11

      許多難點是(shi)不(bu)好克服的(de)(de)(de),盡量不(bu)作(zuo)混凝土剛性防水(shui)屋面(mian),卷(juan)材的(de)(de)(de)優缺點半個世(shi)紀的(de)(de)(de)實踐(jian)證明,卷(juan)材優點多些(xie),卷(juan)材的(de)(de)(de)用量之大也說明了(le)這一點,卷(juan)材的(de)(de)(de)厚度(du)能夠保持一致(zhi),在工(gong)(gong)廠中機制(zhi)而(er)成,誤差很(hen)小,所以鋪粘任何(he)位置厚度(du)不(bu)變,不(bu)因基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)平整(zheng)度(du)好壞影響(xiang)厚主卷(juan)材施工(gong)(gong)速度(du)快、效率高,一個作(zuo)業組(zu)每(mei)天人平均作(zuo)業30m2~50m2,卷(juan)材可以空(kong)鋪施工(gong)(gong),不(bu)受(shou)基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)潮濕(shi)度(du)的(de)(de)(de)影響(xiang),縮(suo)短了(le)施工(gong)(gong)期(qi),采用空(kong)鋪可避免基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)裂縫拉(la)斷(duan)(duan)防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng),卷(juan)材做立墻防水(shui)很(hen)方(fang)便(bian)。是(shi)延長(chang)防水(shui)壽(shou)命(ming)的(de)(de)(de)重要(yao)條件(jian),延長(chang)了(le)老(lao)期(qi),防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)每(mei)天受(shou)風(feng)雨(yu)、日(ri)曬(shai)、冬(dong)凍侵害,表面(mian)開始(shi)老(lao)化,老(lao)化過程從表面(mian)向內,一層(ceng)(ceng)(ceng)(ceng)(ceng)一層(ceng)(ceng)(ceng)(ceng)(ceng)進行(xing),雖然緩慢,但日(ri)久年深,薄(bo)防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)全部老(lao)化,因而(er)增(zeng)加防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)厚度(du),就是(shi)延長(chang)防水(shui)壽(shou)命(ming),對防備基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)裂縫有利,如(ru)果(guo)防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)滿粘在基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)上(shang),基(ji)(ji)層(ceng)(ceng)(ceng)(ceng)(ceng)裂縫拉(la)伸防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng),防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)很(hen)薄(bo)的(de)(de)(de)材料,受(shou)拉(la)不(bu)易剝(bo)離,容易斷(duan)(duan)開,厚的(de)(de)(de)防水(shui)材料,即(ji)使底表面(mian)已有裂紋,但上(shang)部還能延伸,有利抵抗人的(de)(de)(de)無(wu)意(yi)破壞,防水(shui)層(ceng)(ceng)(ceng)(ceng)(ceng)竣工(gong)(gong)后仍有人在上(shang)面(mian)行(xing)走、推(tui)車、搬運、堆放(fang)。

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