EVA止水(shui)带(dai)是由聚氯乙(yi)烯,EVA树脂与(yu)各种填加(jia)剂(ji),经特(te)殊生产工序而(er)制成的(de)止水(shui)材料(liao)(liao)。EVA止水(shui)带(dai)利用弹性(xing)(xing)体材料(liao)(liao)具(ju)有的(de)弹性(xing)(xing)变形特(te)性(xing)(xing)在建筑构造接缝中起到防漏、防渗作用,EVA止水(shui)带(dai)具(ju)有耐腐蚀、耐久性(xing)(xing)好的(de)特(te)点。
EVA背贴式(shi)(shi)止水(shui)(shui)(shui)(shui)(shui)(shui)带作(zuo)为防(fang)水(shui)(shui)(shui)(shui)(shui)(shui)板的辅(fu)材,可广泛应用(yong)于地下室(shi)、地铁(tie)隧道(dao)(dao)、公路(lu)和铁(tie)路(lu)隧道(dao)(dao)工(gong)程的防(fang)水(shui)(shui)(shui)(shui)(shui)(shui),水(shui)(shui)(shui)(shui)(shui)(shui)坝、人工(gong)湖(hu)、水(shui)(shui)(shui)(shui)(shui)(shui)池(chi)、污水(shui)(shui)(shui)(shui)(shui)(shui)处理(li)场(chang)、垃圾掩(yan)埋场(chang)等工(gong)程的防(fang)水(shui)(shui)(shui)(shui)(shui)(shui)及防(fang)渗。另外, EVA背贴式(shi)(shi)止水(shui)(shui)(shui)(shui)(shui)(shui)带也可单独作(zuo)为止水(shui)(shui)(shui)(shui)(shui)(shui)带使用(yong),应用(yong)于混凝土现浇时变形缝(feng)、施(shi)工(gong)缝(feng)内与混凝土结(jie)构(gou)成为一体的基础工(gong)程中,决缝(feng)隙处的渗漏(lou)水(shui)(shui)(shui)(shui)(shui)(shui)问题。
背贴(tie)式止(zhi)水(shui)带是(shi)防水(shui)板后的第(di)一(yi)道防水(shui)层。对(dui)于隧(sui)道渗(shen)水(shui)的预防至关重(zhong)要。为(wei)保证后灌(guan)注(zhu)的混(hun)凝土(tu)与止(zhi)水(shui)带之间(jian)(jian)咬合密实。减少出(chu)现(xian)窜水(shui)的现(xian)象,需要在(zai)背贴(tie)式止(zhi)水(shui)带两侧(ce)的齿条间(jian)(jian)设置注(zhu)浆(jiang)(jiang)花管,一(yi)旦出(chu)现(xian)不实现(xian)象可以通过注(zhu)浆(jiang)(jiang)花管进行注(zhu)浆(jiang)(jiang)。