Secondly, there may be several cases where the bonding between the wet-laid coil and the substrate surface is not firm:
1. Waterproof material:
The self-adhesive coil itself has some problems, such as poor product quality and peeling strength not reaching the national standard GB/T.
23457-2009
The standard requirement of "pre-laid/wet-laid waterproof membrane" leads to insufficient bonding strength between membrane and base surface.
2. Waterproof structure:
Cement slurry or cement mortar should have ordinary portland cement with the label above 4.25 as far as possible, and its proportion should not be too strict. Which part should it be, underground? Or erect a wall? Adjust the viscosity properly, that is, dilute the consistency.
3. Environmental impact:
Looking at the environmental temperature and humidity during and after construction, the environmental temperature and humidity have a great influence on the solidification of cement materials. Generally, when the humidity and low temperature are high, the bonding strength will increase rapidly. If the humidity is high and the temperature is low, the bonding strength between the wet-laid coil and the base surface will gradually increase, and even it will take a week to reach the strength.
What you said is most likely the third case. At present, there is a special rubber powder for wet laying of self-adhesive coil in the market, which is specially used to solve your problem. After adding this product in a corresponding proportion to the cement slurry, the strength can be reached within 6 hours when the cement slurry is bonded with the self-adhesive coil, and within 20 hours when the temperature and humidity are poor.
Call you
Tangshan Desheng Waterproof 03 15-5503703
You can contact them specifically.
I hope the above answers are helpful to you.