How to detect the seam quality of anti-seepage geotextiles


Published:

2018-07-25

The anti-seepage geotextile is a kind of high-quality geotechnical composite material, and its ultra-high anti-seepage effect has been well received by many users, but we need to do it well during construction. To ensure that its construction is successful, what are the methods for investigating the seam quality of anti-seepage geotextiles, let's recommend them in detail.

The anti-seepage geotextile is a kind of high-quality geotechnical composite material, and its ultra-high anti-seepage effect has been well received by many users, but we need to do it well during construction. To ensure that its construction is successful, what are the methods for investigating the seam quality of anti-seepage geotextiles, let's recommend them in detail.

Visual inspection method: When the film and the film are thermally welded, look at all the seams. If the welding seam is transparent, balanced, without wrinkles, and no voids, and the hand peels off firmly, it can be visually regarded as qualified. It must be bonded with KS glue, with a width of 10cm. The seam must not have warpage, bulge, degumming, holes, fluffy, or lack of glue. After peeling, the damage will occur on the adhesive, and the non-bonding surface.

Inflation method: The welding seam is double strip, leaving a cavity of about 10mm between the two, seal the two ends of the section to be measured, insert the gas needle, inflate to 0.05~0.2MPa (obtained after the retina), and watch it for 30s. Watch the vacuum gauge, if the air pressure does not drop, the expression does not leak, and the seams are qualified, otherwise it should be repaired in time.

Sampling test method: get a sample of about 1000 square meters, why is the tensile strength practice, the conditional strength is not less than 80% of the base material, and the sample breakage must not be at the joint, otherwise the joint quality will fail.

Vacuum method: a set of settings including suction cups, vacuum pumps and vacuum machines for your own use. When surveying, brush the part to be measured, apply pancreas water, put on the suction cup, press and vacuum to negative pressure) 0.02~0.03MPa, Close the air pump and watch it for 30 seconds to see if there are pancreatic blisters formed in the transparent cover on the top of the suction cup and whether the vacuum gauge has fallen.

The quality inspection method of the anti-seepage geotextile in the seam is mainly of this kind. We must be accurately controlled according to the statement, so that its function can be fully displayed. What problems do people have? Welcome to ask us in time, more For the news of anti-seepage geotextile, we will continue to rectify it for you.