A load that cooled too much in transit or at the plant and reaches the paver under the spec minimum for that mix, or with a hard crust and lumps that will not break down in the screed. Inspectors shoot it with an infrared gun and reject it, because cold mix will not reach density and leaves rough, open spots in the mat. Long hauls, poor tarping and trucks waiting in line on a windy day are the usual causes.
Kick that one back, it's a cold load, 232 on the gun and chunks the size of footballs.
Also heard as
- cold truck
Related terms
Tarp
To cover a loaded haul truck with a tarp to hold in heat and keep the mix from crusting over.
Load ticket
The printed slip that travels with every truck showing mix type, tonnage, time and plant data for that load.
Segregation
Separation of coarse and fine aggregate, or of hot and cold mix, that leaves open, low-density spots in the mat.
Density
How tightly a compacted asphalt layer is packed, reported as a percentage of its maximum theoretical density.