Pavement specific sealant

    Construction attention points

（1）The temperature of the sealant should reach 180 ℃ during construction, but should not exceed 220 ℃, and it is better have good fluidity. The sealant should be fed once, and it is better to use it up as much as possible to avoid repeated heating.

（2）The slot size should meet the minimum design requirements, i.e., width 21cm, depth 21.3cm.

（3）Before grouting, the slot and its two sides should be kept absolutely dry and clean.

（4）The surface temperature should be maintained above 4°C during construction, otherwise it should be preheated to above 20°C.

（5）If there is a joint in the grouting, it is necessary to overlap the grouting twice, and the overlapping part should be greater than 10cm.

（6） If there is a slope, it is necessary to pour from low to high.