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Precautions for Bentonite Geosynthetic Clay Liner winter construction

Views: 6     Author: Site Editor     Publish Time: 2020-12-26      Origin: Site

Bentonite Geosynthetic Clay Liner is generally not suitable for construction under negative temperature. Under negative temperature, the roof insulation layer and leveling layer are not easy to dry. If the excess water is frozen, the volume will expand, which will easily cause the membrane waterproof layer to crack.


Precautions for Bentonite Geosynthetic Clay Liner winter construction1


Precautions for winter construction of bentonite waterproof blanket

 

Shandong bentonite waterproof blanket manufacturer, the price of bentonite waterproof blanket, bentonite waterproof blanket is generally not suitable for construction at negative temperature. Under negative temperature, the roof insulation layer and leveling layer are not easy to dry. If the excess water is frozen, the volume will expand, which will easily cause the membrane waterproof layer to crack; when the temperature rises and thaws, the moisture will evaporate, which will easily cause the membrane waterproof layer to drum up. In addition, due to the low temperature in winter and fast heat dissipation, it is not easy to ensure the use temperature of the bentonite waterproof blanket cementing material. Waterproof membranes are prone to brittle fracture under negative temperature, and it is also difficult to lay up, and it is difficult to guarantee the quality of the waterproof layer.

 

When it is necessary to pave the roof waterproof layer of bentonite waterproof blanket in winter, the leveling layer should be cast-in-place bentonite waterproof blanket mortar, or dry reinforced concrete prefabricated slabs, and the joints between the slabs should be filled with bentonite waterproof blanket mortar.

 

During construction, cold-proof measures should be taken to ensure the use temperature of the bentonite waterproof blanket cementing material, otherwise it will be difficult to meet the specification that the thickness of each layer of hot bentonite waterproof blanket cementing material is not greater than 1.5mm. For the roof waterproof layer under degrees below zero temperature, it is recommended to lay a layer of waterproof coiled material first to ensure that the roof of the project does not leak. When the temperature becomes warmer, after inspection and renovation, the bentonite waterproof blanket layer and protective layer are laid according to the original design requirements.

 


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