防水施工注意事项同样的防水材料为什么使用寿命却不一样
发布时间:2021-09-30 来源:防水堵漏工程公司 浏览次数:
目前,建筑物的渗漏率仍然很高。部分原因归因于建筑,部分原因归因于材料。施工粗糙无序,材料假冒伪劣。此外,我们常说“偷工减料”就是不做该做的事,不处理该处理的事,这在成本上也节省了人工成本。“减料”是指合格材料过度节约,不愿使用,不愿使用,盲目减少材料使用,降低成本。
1.防水材料的使用寿命大部分取决于施工
今天,我们将从“材料减少”主题开始。我们都知道防水涂料刷的次数越多,
the thicker the film-formig thickess of the coatig, that is, the more the amout of materials per square meter, the more the waterproof quality ca be guarateed. I the actual project, whether the waterproof is well doe ad whether it is durable is oly determied by oe meas, that is, the acceptace of "closed water". After the costructio of the waterproof layer is completed, the plae is closed for 24h, the facade is cotiuously dreched for 30mi, ad the back is watertight, which shows that our waterproof is doe well ad ca be haded over.
The questio is, just passig the closed water test ca show that the waterproof ca be used for five, te, twety years or eve the same life as the structure? Of course ot.防水涂膜只涂薄一次,甚至达不到0.1mm,但防水涂膜层是连续的。在这个时候,当你关上水龙头时,你会漏水吗?答案是没有漏水。但这样的防水层能维持多久呢?毋庸置疑,后期抵抗结构变形的能力将在水泥砂浆的刚x保护或其他装饰过程中受到破坏。耐久x、防水x和使用寿命如何。
为什么厚度与使用寿命有关?如果不相关,防水等级与多层防水层无关。例如,对于卫生间的一次防水(20年使用寿命),
the polymer waterproof film shall ot be less tha 2.0mm, ad for the secodary waterproof (10-year service life), the polymer waterproof film shall ot be less tha 1.5mm. Regardless of the techical specificatios, the waterproof layer will be subject to fatigue cosumptio whe playig the waterproof fuctio. The deser ad thicker the film waterproof layer is, the loger it ca resist fatigue expasio.
2. The coatig is stretched due to structural cracks
The purpose of waterproof layer is ot to break ad maitai cotiuity whe cracks appear i the structure, so as to play the fuctio of impermeability. If the thickess d of the waterproof coatig film i Figure 1 is 2.0mm, whe the structure is deformed ad cracked,其厚度张力变为1.0mm。如果原厚度仅为0.3mm,当结构变形开裂时,涂膜会变薄甚至断裂,不会起到防水作用。
防水施工时,涂层防水层的厚度很重要,但该厚度是“多次薄涂”后产生的厚度,而不是一次形成的厚度。以厚度为1.5mm为例,至少需要三到四次反复涂刷才能形成,使成品膜致密,真正起到防水作用。
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