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复合防水层可以这样选

房天下   2017-11-20 19:48

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px"> 作者简介:张志强,男,1984年生,深圳市卓宝科技股份有限公司华东区技术总监,从事建筑防水施工技术工作。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  复合防水层是将彼此相容的卷材和涂料组合在一起,这样可以综合两者各自的优势,相互弥补,相比于单一的卷材或涂料而言,其防水效果都更加优异。如何才能彼此相容呢?除了卷材和涂料之间不会发生不良的反应之外,它们能否紧密粘结形成整体也是要充分考量的因素。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  对于市场上几种常见的卷材与涂料之间的粘结性能,之前已有专业机构做了

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  相关粘结剥离性能试验,通过该试验我们可以得出:

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  1、SBS卷材与JS聚合物涂料、聚氨酯涂料、热熔橡胶沥青涂料相容性较差,主要体现在粘结后很容易彼此分离。究其原因,还是SBS卷材表面覆了一层无法揭除的PE隔离膜,而这层PE隔离膜将卷材与涂料隔离开来。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  2、合成高分子防水卷材与JS聚合物涂料、聚氨酯涂料、热熔橡胶沥青涂料相容性也不理想。有些高分子卷材表面光滑,与涂料粘结不牢,而且像PVC卷材与热熔橡胶沥青涂料复合后可能会发生增塑剂迁移现象,从而导致卷材收缩、变硬等,影响防水功能。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  3、自粘卷材相比于SBS卷材、合成高分子卷材来说,其与JS聚合物涂料、聚氨酯涂料、热熔橡胶沥青涂料的粘结剥离强度都较高,综合表现优异。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  因此,选择自粘卷材作为复合防水层中的一员是毫无争议的。那么,与自粘

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  卷材复合的JS涂料、聚氨酯涂料、热熔橡胶沥青涂料哪种更好呢?从自粘卷材与三种涂料的粘结剥离强度值来看,JS涂料稍占上风。而复合防水层施工于基层上最终能达到什么样的防水效果,我们还是要综合考虑。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  复合防水层中的防水涂料既是防水层也是粘结层,其与基层粘结越牢固,防

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  窜水效果越好。JS涂料和聚氨酯涂料都可以与基层牢固粘结,粘结强度可达到1.0MPa以上,但在实际应用中除了考虑粘结强度外,更重要的是要分析基层开裂时对防水层的影响。当基层开裂时,与基层牢固粘结的防水涂料几乎没有剥离区,拉应力只能集中在开裂部位,而这时涂料能够参与到拉伸的区域可以说趋于无限小,以至于涂料在不被拉伸或者极少拉伸量的状态下被拉断,也就是所谓的“零延伸断裂”。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  本身作为柔性防水材料的涂料来说,其与基层紧密粘结后,自身的延展性能否抵御基层的变形和开裂呢?我们知道,JS涂料、聚氨酯涂料在固化成型后材性已跟卷材相近,也具有一定的延展性。当基层突然开裂时,往往要求涂料必须具备几倍甚至上百倍的延伸率,才能满足基层开裂对于涂料所造成的拉伸。而实际上,像延伸率能够达到500%的聚氨酯涂料也不能保证不被拉断。影响还不仅如此。若涂料与卷材牢固粘结,涂料又无法完全抵御和吸收开裂应力,那么还会波及到涂料上部的卷材,从而破坏复合防水层的整体性。而如果涂料采用的是热熔橡胶沥青涂料,会是怎样一种结果呢?我们可以先来看看一个小试验。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  试验采用的是一个演示仪器(如图1),该演示仪器由两个金属槽拼在一起模拟基层,两个金属槽之间的拼缝模拟基层开裂产生的裂缝,通过调节金属槽的开合来控制裂缝的宽度。模拟基层的中间还设有一个2mm深的凹槽,就是涂料的涂刮区域。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  金属槽

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  拼缝

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  涂料涂刮区域

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">  (图1)

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  在开始试验之前,先将演示仪器连接电脑以控制金属槽的开合,而此时两个金属槽处于闭合状态(坐标值为0.00),代表模拟基层没有开裂,然后将涂料涂刮在2mm深的凹槽内,此时涂料的厚度就为2mm,并向模拟基层注水,代表试验是在有水的情况下进行(如图2)。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">  (图2)

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  试验过程中,模拟基层的裂缝分别为1、2、3、4mm时没有漏水现象发生,而当裂缝达到5mm时,橡胶沥青涂料依然没有被拉断(如图3),足以证明该涂料抵御基层变形的能力非常优异。那么,橡胶沥青涂料到达有什么与众不同么?

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">  (图3)

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  橡胶沥青防水涂料是由沥青、高分子材料、胶粉、特殊添加剂、填料等组成,在常温状态下始终保持黏性的膏状体,通过现场加热成流态,经专门施工设备,喷涂或刮涂到基层上,与基层牢固粘结在一起,形成一道性能优异的防水层,同时也可作为自粘防水卷材的粘结层。它与自粘卷材形成复合防水层具有以下技术优势:

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  一、粘结性

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  橡胶沥青涂料本身是一种粘结型材料,可以和混凝土、防水卷材、钢板

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  等多种材质牢固粘结,从而保证了卷材、涂料与混凝土基层之间牢固粘结,避免窜水。同时,橡胶沥青涂料为100%内聚破坏,也就是在受到外力的作用下,兼做粘结层的橡胶沥青涂料由于内聚强度小于受到的拉伸强度或剪切强度,所以破坏部位不是发生在涂料与卷材、涂料与基层的交接面,而是发生在涂料自身(如图4)。从图4可以看到,揭起卷材时有明显的沥青拉丝现象。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px" align="center">  (图4)

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  二、流动性

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  橡胶沥青涂料通过专门的设备加热成流态后具有很好的流动性,可以弥补基层的凹凸不平(如图5),涂料上面再覆一层材性完全相容的自粘卷材,此时卷材--涂料--基层三者之间牢固粘结,而且真正实现了微观满粘。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  三、渗透性、密封性

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  混凝土结构本身具有多孔性质,而且也存在很多的结构裂缝。橡胶

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  沥青涂料加热成流态后涂覆在基层上,通过自身良好的渗透性可以进入到混凝土结构的毛孔和微裂缝中,对结构起到了很好的密封作用,也提升了结构自身的防水能力。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  四、蠕变性

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  橡胶沥青涂料是一种不会固化的粘性膏状体,并具有优异的蠕变性能,在与

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  基层牢固粘结时,即使基层开裂,涂料也可通过自身的蠕变性能吸收开裂应力,所以基层开裂部位的橡胶沥青涂料只是在厚度上变薄,但是并不会被拉断。而且,涂料不会把开裂应力传导给上部与其紧密粘结的自粘卷材,相当于卷材有了一层很好的缓冲层,卷材得到了很好地保护。这样一来,复合防水层在与基层牢固粘结的情况下也能很好地避免“零延伸断裂”。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  另外,橡胶沥青涂料无需多遍施工,可一遍达到设计厚度,涂料施工的同时

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  即可铺贴自粘卷材,施工周期短。而且,橡胶沥青涂料需预先加热成流态,所以

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  施工时受环境温度影响较小,应用范围更加广泛。

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  结语

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  复合防水层要实现1+1>2的防水效果,材料的选择非常重要。防水涂料

RD-SPACING: 0px; TEXT-TRANSFORM: none; FONT-WEIGHT: normal; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-: 0px; PADDING-LEFT: 0px; MARGIN: 10px 0px; ORPHANS: 2; WIDOWS: 2; LETTER-SPACING: normal; LINE-HEIGHT: 24px; PADDING-RIGHT: 0px; TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px">  为防水卷材与基层的衔接层,应在具备良好的防水和粘结作用的同时,还能够适应基层的变形,从而起到很好的缓冲作用来保护复合防水层的完整性。所以,自粘卷材与橡胶沥青涂料是复合防水层中最为理想的选择。

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