Synchronous crushed stone sealing refers to the use of synchronous crushed stone sealing vehicles to
spray asphalt binder and distribute aggregates simultaneously, so as to have the fullest contact between
asphalt binder and aggregates, in order to achieve the maximum bonding degree between them. Compared
with ordinary crushed stone sealing layers, synchronous crushed stone sealing layers shorten the time
interval between spraying binder and spreading aggregates, allowing aggregate particles to better implant
into the binder and obtain more coverage area. It is easier to ensure a stable proportional relationship
between the binder and stone chips, improve work productivity, reduce mechanical configuration, and lower
construction costs. After synchronous crushed stone sealing, asphalt pavement has better anti slip and anti
seepage performance, which can effectively cure hazards such as poor oil, falling particles, slight mesh
cracks, ruts, and sinking on the road surface. This technology can be used on both high-grade and ordinary
highways. The synchronous gravel sealing technology has extremely strong waterproofing, extremely high
skid resistance, and good performance in handling road cracks. It can ensure road maintenance performance
for 7-10 years without aggregate loss. Synchronous crushed stone sealing vehicle is used for the construction
of lower and upper sealing layers on highway pavements, the addition of wearing layers on new and old
pavements, the layer laying method for asphalt pavements, and the separate spraying (scattering) of asphalt
and crushed stone under special circumstances.
