1. When the concrete reaches the initial setting and the expansion joint is cut, the residue such as sawdust on the expansion joint and panel shall be removed by high-pressure water gun;

2. Arrange the cured films on the road surface layer by layer, and the overlapping width of two adjacent films is not less than 50mm；;

3. Take the distance of about 10m as the laying stage of the solidified film, and repeat the following procedures: firstly, sprinkle water until the free water thickness of the road surface is 3 mm ~ 4 mm, and roll the arranged solidified film forward on the road surface to make the polymer water-absorbing material in the film fully absorb water to the thickness of 5 mm ~10mm;

4. In the whole laying process, the overlapping width of two adjacent films should always be kept above 50 mm;

5. Both sides of the film have overlapping glue, which can realize overlapping adhesion between films; In order to prevent the gap caused by insufficient adhesive adhesion from forming a wind tunnel and affecting the quality of health care, a transparent adhesive with a width of 50mm can be used to stick the film lap;

6. In order to prevent the cured film from being blown away by the wind or washed away by heavy rain during the whole curing period, a small amount of cement blocks or aggregates should be pressed in. In particular, the coiled materials paved by the central isolation belt and the shoulder must be compacted;

7. The membrane should cover the side wall edges on both sides of the concrete slab, and reserve 100 mm ~ 200 mm for sand compaction;

8. After the curing period expires, the uncovered curing film can be retained as the initial curing cover after concrete paving and before the cutting of expansion joints, and the old film can be used to reduce the curing cost and improve the curing quality.

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