The following is a detailed explanation of the precautions for the construction of the tunnel waterproof board
RELEASE TIME :
2022-08-04 14:27
1. Laying: The laying of the tunnel waterproof board has relatively high requirements on the flatness of the rock surface. It is necessary to level the uneven surface layer by layer with spray grout, and correctly mark the longitudinal centerline of the tunnel vault so that the horizontal centerline of the waterproof board is consistent with this mark. Plastic round gaskets are welded on the top of the vault, laid from the vault to both sides, and the circular gaskets are hot-melt welded when laying.
2. Construction: At present, the hot-melt gasket fixing method and the tendon hanging method are commonly used in the construction of tunnel waterproof boards. The hanging method is to hang the straps behind the waterproof boards.
When laying the waterproof board, use slings to fix the fixed points (wooden wedges, nails, iron wire) embedded in the wall to fix the waterproof board, use a nail gun to fix the hot-melt gasket on the initial support surface, and then use a heat gun to melt the hot-melt gasket. Fused gasket, paste the flashing on the hot-melted gasket.
The use of hot-melt gaskets to lay tunnel waterproof panels has the following advantages:
1. It can not only ensure the tight fit between the waterproof board and the initial support, but also prevent the waterproof board from being folded, and prevent the waterproof board from being stretched and broken due to over-tight laying during the concrete construction process.
2. The hot-melt gasket has grooves, and the steel nails will not appear. The ironing pad is made of soft plastic material, which can ensure that the waterproof board will not be pierced.
3. By controlling the distance between the hot-melt gaskets, the straightness and appearance of the flashing can be easily controlled.
4. The construction of tunnel waterproof board is convenient and quick.
3. Matters needing attention: When laying the waterproof board, use a special hand flux to heat the mat. The bonding and peeling strength of the two should not be less than the tensile strength of the waterproof board.
The waterproof board should be thermally fused with a special welding machine, the bonding area should not be less than 10 cm, the bonding peel strength should not be less than 80% of the tensile strength of the base material, and the distance between the ring seam of the tunnel waterproof board and the lining seam should not be less than 1.0m for waterproofing Before the layer is laid, the waterproof board must not be taut, and the tight connection between the board surface and the sprayed concrete surface must not be cracked.
Do you know how to choose waterproof board products?
Waterproof board manufacturers' product selection method: look at the appearance: no matter what kind of waterproof board, what we need to see is whether its appearance is flat and uniform. If it is an inferior product, the workmanship is very rough, it looks uneven, and it may even There will be some problems such as holes, bumps, cracks, missing edges, etc., indicating that the raw materials and craftsmanship are improper, and it is recommended not to buy such products.
Waterproof board manufacturer product selection method 2 Check the thickness: Good waterproof boards have the same thickness, not some places are thick and some places are thin. We can observe the four sides of the waterproof board. If there is no obvious change in thickness, it means that it is a qualified product.
Waterproof board manufacturer's product purchase method three tests: We can use the water splashing method and the refrigerator freezing method to test, splash water on the board to see if it will penetrate into the interior, or put it in the refrigerator for about two hours to check whether there is any Cracking, if all meet the standard, it is a qualified product.
Waterproof board manufacturer's product purchase method four identification: check whether the waterproof board has a certificate of conformity, trademark, manual, etc., if it is produced by a regular manufacturer, these should be available, and the text is also very clear. If there is no manufacturer for anything, the proof is definitely not good Integrity, you must not be greedy for petty gains.
RELATED NEWS
What is the function of the waterproof board?
2022/11/14 15:47
Precautions for waterproof board construction
2022/11/03 11:58
What are the characteristics of the waterproof plate
2022/10/24 14:32
What is the purpose of the waterproof plate
2022/10/08 16:06
CONTACT US
Contact person : Mr. Lu Dawei
Tel : +86-5342131818
Tel : +86-13792211121
WhatsApp：+86-13792211121
Address: Lingcheng Economic Development Zone, Dezhou City
Copyright : Dezhou Yiwei Geomaterials Co., Ltd. Powerby : 300.cn jinan2 SEO BUSINESS LICENSE
