2 Construction precautions
1) Preparation of surface layer
First, clean the pavement so that there is no debris on it, and it is better to clean it with water. Repair the cracks on the pavement larger than 0.6 cm, and the repair material can be asphalt concrete, asphalt sand, cement concrete according to the unused situation.
2) Spraying sticky layer oil
Spray sticky layer oil on the pavement with a hot asphalt sprinkler, the amount of oil depends on the oil absorption rate of the pavement, and the general amount is between 0.9-1.2 kg/㎡. Oil number is generally better with 60 or more asphalt.
If you take two times sticky layer oil method, the first dosage between 0.5-0.7 kg/㎡, then lay asphalt geotextile, in the asphalt geotextile on the sprinkling of sticky layer oil, the dosage between 0.4-0.5 kg/㎡.
3) Paving surface layer
When laying geotextile, ensure that the coil is at a certain height from the ground, and when the nuisance-free geotextile is tensioned and straightened in bonding with sticky layer oil, brush it flat and roll it with a steel roller.
When geotextile laying, should try to make it flat and straight, which can give a certain tension. When the bonded fabric appears more than 1.27 cm wrinkle, use a knife to cut it and lap it along the laying direction. When laying the fabric at the road bend, it should be cut open on the inside of the fabric bend, and lap along the laying direction. The lap length required between the fabric width and the fabric width is 4-7.5 cm.
4) Spreading stone chips
After the fabric is fully combined with the sticky layer oil, sprinkle stone chips on it, stone chips can generally be used melon pieces or medium-coarse sand, the number of stone chips depends on the flooding oil on the surface of the fabric, generally in about 2 m³/K㎡.
5) When laying geotextile in a large area, at the lateral lap of the cloth, according to the specific situation can be considered fixed with a fixer
Fixer includes fixing nails and fixing iron. Fixed nails available cement nails, nails, nail length in about 8 cm, fixed iron with 1 mm thick, 3cm wide iron strip. Nail-fixed nails available hand hammer or nail gun, in the case of the grassroots comparatively dense room available high-speed nail gun.
At the same time, the geotextile should be kept dry, if it is rained on then it should be dried all before laying. When laying the geotextile, the construction personnel should not smoke. When the human asphalt is used to bond the geotextile cools, then do the top layer. In the geotextile is in a saturated state, hot asphalt has not yet cooled do not drive on it, in the paved geotextile vehicles do not turn around and brake.