Bentonite waterproofing blanket construction method

1, bentonite waterproofing blanket material weight is large, it is appropriate to use the shovel with waterproofing blanket lifting tool handling, laying.

2, bentonite waterproofing blanket material connection using lap.

3, bentonite waterproofing blanket in more than 10% of the slope should be laid to minimize the number of laps along the length of the slope direction, the slope of the bentonite pad must exceed the foot of the slope line more than 1500mm. D, we will strictly in accordance with the submitted to the supervising engineer's bentonite waterproofing blanket paving design drawings to be paved, unless unless required by the owner or the supervisory requirements.

4, used to lay bentonite waterproofing blanket of any equipment can not have been laid on top of the geosynthetics traveling. Installation of bentonite waterproofing blanket, outdoor air temperature can not be lower than 0 ℃ or higher than 40 ℃.

5, all exposed edges of the bentonite waterproofing blanket must be immediately pressed with sandbags or other heavy objects to prevent the bentonite waterproofing blanket by the wind or be pulled out of the perimeter of the anchoring ditch. Bentonite waterproofing blanket can not be unfolded in windy weather conditions to prevent being blown up by the wind.

6, bentonite waterproofing blanket must be laid in such a way as to ensure that the bentonite waterproofing blanket is in direct contact with the foundation below, excluding folds. Any wrinkles, folding or arching may cause the soil layer of other geomaterials to occur the same situation, in order to avoid wrinkles, folding and arching, we will be in accordance with the requirements of the technical note through the bentonite waterproofing blanket re-laying or cutting and repair to eliminate these problems.

7, bentonite waterproofing blanket equipment must be approved by the supervising engineer to use, do not allow the use of unprotected razor or "fast knife". I, may damage the bentonite blanket construction equipment can not act directly on the bentonite blanket. A feasible laying method is to drive the bulldozer backward and spread the bentonite blanket on the front of the bulldozer in front of the crane. If the earth machine in the foundation soil left a car print, should be in the paving work before continuing to restore the original state.

8, laying bentonite blanket to minimize the drag of bentonite blanket on the foundation, so as not to cause damage to the contact surface of the bentonite blanket and the ground. If necessary, you can put a layer of temporary geotextile on the ground to reduce the bentonite blanket in the laying process due to friction caused by damage.

9, bentonite blanket laying and lap should be parallel to the direction of slope inclination, if the slope is greater than 4: