"Asphalt Mixing" from qqq's blog
The final pressure: the final pressure should be used double drum roller or vibration off the vibratory roller crushing, eliminating the wheel (the end of the temperature is greater than 80 ��). The initial pressure and vibration roller to low speed, so as not to heat the material, fissure. Rolling should be carried out at higher temperatures after paving, the general pressure can not be lower than 130 ��, the higher the temperature is easier to improve the road surface roughness and compaction. During the rolling, the rollers can not stop, turn or brake. The rollers shall not remain on the already pressurized mixture at temperatures above 70 �� C and shall take effective measures to prevent oil, grease, gasoline or other organic impurities from spilling on the road during the operation or parking of the roller. In the paving and rolling process, to organize someone to carry out quality control and defect repair. In the press where the pressure can not be pressed, the use of hand or ramming or ramming the mixture fully compaction.
Fifth to control the handling of seams. First, the longitudinal joints should be used to automatically control the sewing machine device to control the elevation between adjacent runs, and to achieve a reliable combination of adjacent travel. The longitudinal seams shall be hot seams and shall be continuous and parallel, and the seam shall be vertical and form a straight line. Vertical joints between the upper and lower layers of the dislocation should be at least 15 cm. Second, the transverse joints should be perpendicular to the paving direction, is strictly prohibited using oblique joints. The transverse joints should be at least 1 meter apart between adjacent levels and adjacent strokes. The transverse joints should have a vertical edge that is crushed into a good edge. Before the next paving, should be at the end of the last trip brushing the amount of sticky asphalt, and pay attention to set the height of the flat plate, rolling to set aside the appropriate amount.
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