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防水层开裂怎么办?

 文章来源:http://www.jnldfs.com/ 发布时间:2022-05-17   

防水层开裂怎么办?
What if the waterproof layer cracks?
揭晓防水补漏工程中防水层开裂与渗漏的秘密,为什么有些房屋渗漏水做了防水还是渗漏水呢,很大一部分存在是防水层渗漏水,很多人对防水层并不是很了解,对防水层停留的印象只是防水师傅说哪哪渗漏水是由防水层导致的,今天防水公司小编就来跟大家聊一聊刚性防水屋面产生开裂和渗漏的原因有哪些,我们一起来看看。
Reveal the secret of the cracking and leakage of the waterproof layer in the waterproof and leakage repair project. Why are some houses waterproof or leaking? A large part of the leakage is the leakage of the waterproof layer. Many people don't know much about the waterproof layer. The impression of staying on the waterproof layer is that the waterproof master says which leakage is caused by the waterproof layer, Today, the waterproof company Xiaobian will talk to you about the causes of cracking and leakage of rigid waterproof roof. Let's have a look.
防水层是防水补漏工程当中不可缺少的一部分,防水补漏小编将从以下六点来说说刚性防水屋面产生开裂和渗漏的原因,其一,刚性屋面长期暴露于大气中,在长时间的日晒雨淋作用下,混凝土面面层会发生碳化现象,导致防水层起壳、起砂,引起渗漏。其二,受荷载作用使屋面板发生挠曲等变形,造成接缝发生位移导致防水层发生开裂和渗漏。其三,变形缝防水构造、伸出屋面管道防水构造、泛水构造、分割缝防水构造、水落口防水等屋面细部构造处理不符合规范要求,导致屋面渗漏;另外,由于女儿墙、山墙与屋面板的变形不一致,若其交接处细部构造处理不当,也容易在交接部位开裂,形成渗漏。其四,基础不均匀沉降和挠度差引起的接缝变形位移,导致防水层开裂渗漏。其五,如果施工中不重视屋面嵌缝这一基本工序,嵌缝前,缝中的浮砂、石屑等夹物未清除干净,致使嵌缝不密实,导致屋面渗漏;另外,嵌缝材料的粘结性、柔韧性和抗老化能力差,不能适应防水层变形而产生裂缝。其六,混凝土内部吸附水或游离水分的蒸发,使混凝土引起物理方面的干湿变形位移,导致防水层开裂和渗漏。如混凝土配合设计比例不当,水灰比过大时,多余的水在混凝土硬化过程中,逐渐蒸发形成许多空隙和相互连贯的毛细管网,而成为屋面的渗水通道;另外过多的水分在砂石骨料表面,形成一层游离的水,相互之间也会形成毛细通道,在干燥作用下,毛细孔中的水逸出产生毛细压力,使混凝土出现'毛细收缩'状态的干缩现象,导致表面开裂。以上是防水补漏小编为大家总结归纳的防水层开裂与渗漏的原因,由此可见,做好防水层很重要,防水层在防水补漏工程中占很大的一部分,防水层做不好防水质量就得不到保障。
The waterproof layer is an indispensable part of the waterproof and leakage repair project. The waterproof and leakage repair Xiaobian will talk about the causes of cracking and leakage of the rigid waterproof roof from the following six points. First, the rigid roof is exposed to the atmosphere for a long time. Under the action of long-term sun and rain, the concrete surface will carbonize, resulting in shell and sand of the waterproof layer and leakage. Secondly, the roof panel is deflected and deformed by the load, resulting in the displacement of the joint, resulting in the cracking and leakage of the waterproof layer. Third, the treatment of roof detail structures such as deformation joint waterproof structure, extended roof pipe waterproof structure, flashing structure, split joint waterproof structure and water outlet waterproof structure does not meet the requirements of the specification, resulting in roof leakage; In addition, due to the inconsistent deformation of parapet, gable and roof slab, if the detailed structure at the junction is not handled properly, it is also easy to crack at the junction and form leakage. Fourth, the joint deformation and displacement caused by uneven settlement and poor deflection of the foundation lead to cracking and leakage of the waterproof layer. Fifthly, if the basic process of roof caulking is not paid attention to in the construction, the floating sand, stone chips and other inclusions in the joint are not removed before caulking, resulting in loose caulking and roof leakage; In addition, the caulking material has poor adhesion, flexibility and anti-aging ability, and can not adapt to the deformation of the waterproof layer to produce cracks. Sixth, the evaporation of adsorbed water or free water in the concrete causes the physical dry and wet deformation and displacement of the concrete, resulting in the cracking and leakage of the waterproof layer. For example, when the proportion of concrete mix design is improper and the water cement ratio is too large, the excess water will gradually evaporate during the hardening process of concrete, forming many voids and interconnected capillary networks, which will become the water seepage channel of the roof; In addition, too much water forms a layer of free water on the surface of sand and gravel aggregate, and capillary channels will be formed between them. Under the action of drying, the water in the pores will generate capillary pressure, resulting in the dry shrinkage of concrete in the state of 'capillary shrinkage', resulting in surface cracking. The above are the reasons for the cracking and leakage of the waterproof layer summarized by the waterproof and leakage repair Xiaobian. It can be seen that it is very important to do a good job in the waterproof layer. The waterproof layer accounts for a large part of the waterproof and leakage repair project. If the waterproof layer is not done well, the waterproof quality cannot be guaranteed.
本文的精彩内容由济南楼顶防水提供知识提供,本网站还有很多的精彩内容,更多的内容您可以点击进入:http://www.jnldfs.com我们有专门的客服为您解答问题
The wonderful content of this article is provided by Jinan roof waterproof knowledge. There are many wonderful contents on this website. You can click to enter more contents: http://www.jnldfs.com We have special customer service to answer your questions
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