保定市防水材料有限公司

一、卷材防水鼓泡

1. Waterproofing blister

（一）现象：

(I) phenomenon:

卷材铺贴后即发现鼓泡，一般由小到大，随气温的升高，气泡数量和尺寸增加。

Tiles after that bubble, generally from small to large, with the temperature increasing, the number and size of bubbles increases.

（二）原因分析：

(two) analysis of the causes:

基层不干燥，表面没有扫刷干净，防水层底部有水汽渗入，基层面没有涂刷基层处理剂，粘结剂与卷材材性不匹配，涂刷不均匀，铺贴卷材时没有将底面的空气排除，有的排气槽堵塞等。

The base is not dry, the surface does not sweep clean, the water vapor permeates the bottom of the waterproof layer, the base surface does not brush the base treatment agent, the binder and the rolling material are not matched, the painting is not uniform, the air of the bottom surface is not excluded, and some exhaust slots are blocked.

（三）防治措施：

(three) prevention and control measures:

基层必须干燥，用简易检验方法测试合格后，方可铺贴；基层要扫刷干净，选用的基层处理剂、粘结剂要和卷材的材性相匹配，经测试合格后方可使用；待涂刷的基层处理剂干燥后，涂刷粘结剂。卷材铺贴时，必须抹除下面的空气，滚压密实。也可采用条粘、点粘、空铺的方法，确保排气道畅通。

The base must be dry, and after the test is qualified with the simple test method, it can be paving. The grass roots should be cleaned, the base treatment agent and the binder should be matched with the material properties of the rolled material. After the test is qualified, the base treatment agent to be brushed is dry and the binder is painted. When laying rolls, we must erase the following air and roll it tightly. It can also use sticky, sticky and empty paving to ensure that the exhaust way is clear.

有保温层的卷材防水屋面工程，必须设置纵横贯通的排气槽和穿出防水层的排气井。

For the waterproof roofing project with insulation layer, we must set up exhaust vents and drain wells that pass through the waterproof layer.

二、卷材防水层裂缝

Two. The cracks in the waterproofing membrane

（一）现象：

(I) phenomenon:

防水层出现沿预制屋面板端头裂缝、节点裂缝、不规则裂缝渗漏。

The waterproof layer appears along the prefabricated roof slab end crack, node crack and irregular crack leakage.

（二）原因分析：

(two) analysis of the causes:

盲目使用延伸率低的卷材，板端头和节点细部没有做附加缓冲层和增强层，施工方法错误，如在铺贴卷材时拉得过紧。

The blind use of low elongation rolls, the end of the plate and the details of the node do not do additional buffer layer and reinforcement, the construction method is wrong, such as when the tape is stretched too tight.

（三）防治措施：

(three) prevention and control measures:

1、选用延伸率大，耐用年限要高于15年的卷材；

1, choose the material with high elongation and durable life over 15 years.

2、在预制屋面板端头缝处设缓冲层，干铺卷材条宽300mm。铺卷材时不宜拉得太紧。夏天施工要放松后铺贴。

2, set up buffer layer at the end of the prefabricated roof panel, and dry lay up the width of the coil 300mm. It should not be too tight to pull up the coiled material. During the summer construction, we should relax the post.

在防水卷材已出现裂缝时，沿规则的裂缝弹线，用切割机切割。如基层没有留分格缝，则要切缝，缝宽20mm，缝内嵌填柔性密封膏，面上沿缝空铺一条宽200mm的卷材条作缓冲层，再满粘一条350mm宽的卷材防水层，节点细部裂缝的处理方法同上。

When the waterproofing membrane has cracks, it is cut along the regular crack line with a cutting machine. If there is no split seam at the base, the seam should be cut, the width of the seam is 20mm, the flexible sealing paste is embedded in the seam, a wide 200mm rolled strip is laid along the seam as a buffer layer, and a 350mm wide waterproofing layer is filled with the same.