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Shendun HDPE Construction Method (2)---Wet Laying Method

Nov 16, 2017

1. Construction process:

 

Clean base - - wet at the grass-roots level, such as wet without this process at the grass-roots level) - - orientation, elastic line - - stirring and paved with cement - - the shop is stuck coil - - pulp, exhaust, air - - lap edge sealing - - coil head, seal - - inspection acceptance

 

2. Basic requirements:

 

1) the base surface has been cleaned up and is basically flat, without obvious protruding parts

2) the base surface of the construction shall not be clear water. If there is any water, the construction shall be made after drainage

3) all kinds of embedded structures and fittings have been installed and fixed firmly

 

3. Construction method:

 

1) remove dust and debris from the base surface, and wet the dry base front;

2) to determine the thickness of the cement slurry, and the thickness of the slurry is usually 3 ~ 5mm, in accordance with the floor level of the site, and the mud (not too large or the side spread) is used in the area of the rolling material.

3) remove the insulating film under the surface of the self-adhesive waterproof rolling material, and place the self-adhesive waterproof rolling material on the freshly spread mortar;

4) after the first roll is finished, the cement slurry will be wiped and the second roll will be laid, and so on;

5) slapping and pressing the surface of the rolling material with a float or rubber sheet, and the air under the surface of the rolling material, so that the coil is closely bonded with the mortar;

6) according to the situation of the site, it can be used to pick up or pick up when the slurry has enough strength.When connecting, the transparent separation film will be placed on the lower part of the rolling material, and the upper roller shall be pasted on the lower roller, and the width of the rolling material shall be no less than 60mm.

7) after the rolling stock has been finished, the coil is sealed with sealing paste with sealing paste.

 

4. Construction considerations:

 

1) prior to the construction of waterproof layer, the installation of various pipes and embedded parts shall be fixed to avoid the holes in the hole after construction of the waterproof layer, which will damage the waterproof layer and leave leakage hidden dangers.

2) the short side joints of two adjacent rows should be staggered by one third of the width, so as to avoid the overlapping of the multi-layer joints, and the coiled material will not be uniform.

3) do not contaminate the self-adhesive surface on the edge of the coil when rolling, and clean up the pollution in time if there is any inadvertent contamination.

4) adhesive waterproofing materials when the shop is stuck on side wall, the slurry should be up and down with many people cooperate to speed up the shop, and paste the coil prior to the cement surface water loss, construction of if spread good cement slurry water loss too fast, can be in surface with wide soft brush right amount water again to restore the surface viscosity and liquidity.

5) avoid inclement weather construction such as rain and snow, wind or above.

6) after the construction is completed and after acceptance, it should be kept in a timely manner, and effective temporary protection measures should be taken if the special conditions cannot be concealed in time.

 

5. Quality standards:

 

1) the materials used and the main supporting materials shall conform to the design requirements and specifications.

2) the water resistant layer and its deformation joints and embedded pipe fittings must comply with the design requirements and specifications.

3) there is no leakage in the waterproof layer.

4) solid base, no time for drum, loose, sand and peeling phenomenon.

5) the laying method and lap joint are in accordance with the design requirements, specifications and waterproof construction drawings.

6) the roller is in the correct direction, and the width of the lap width is allowed to be plus or minus 10mm


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