How do you check asphalt temperature in Borama?

Asphalt temperature supervision gaps in Borama show up as a mat that was placed too cool to bond. The mix leaves the plant hot, loses heat in the truck, and arrives at the paver lower than the job needs. The first sentence of the title question has one answer: you check it with a probe, on the truck and behind the paver, and you write both numbers down.

Where does the temperature get lost before the paver?

The mix cools between the plant and the lay point, and the longer the haul, the more it drops. The outside of the load loses heat to the air and the truck body while the core stays hotter, so a crusted surface can sit over mix that is still within range, and the reverse happens on a long haul in wind. Judge that balance on your own site: measure at three depths in the same load instead of reading the surface alone. General practice is to cover the load, keep the haul short and check the mix on arrival rather than trusting the plant ticket. Confirm the permitted haul time and the rejection temperature against the project specification or the engineer's instruction. Ask the municipal engineer's office whether any temperature records exist for the stretch you are comparing against, and read the ticket against what the probe says.

What does cool asphalt do to bonding and compaction?

Cool mix cannot be compacted to the density the design expects, and it does not knit to the layer below. That is poor pavement bonding, and it starts as a joint that looks closed on the day and opens later under traffic and water. The roller passes over a stiff mat and bridges instead of densifying, so air voids stay high and water finds a path in. The failure is slow, which is why supervision misses it: nothing looks wrong at handover. General practice is to place and compact within the working window the mix design allows, and to stop laying when the probe reading at the paver falls below the limit in the specification. Confirm that limit with the engineer, not with a rule of thumb from another site.

How do you catch the gap during supervision?

Weak supervision leaves no record, so the check is documentary as much as physical. A supervisor who is absent, busy with another trade or unwilling to stop a delivery will sign the day's work without a single probe reading. The client sees a finished surface and no evidence of what temperature it was laid at. To catch it, ask three things. First, who holds the probe on site and where the readings are written. Second, what the rejection limit is and who has authority to send a truck back. Third, whether the same person inspects the joint, the tack coat and the mat behind the paver. Walk a recently completed stretch and look at the longitudinal joints after rain. Compare the contractor's method statement with what the crew actually does.

What to do next

Before the next asphalt delivery in Borama, write the probe procedure into the site instruction: who measures, at which two points, what the rejection limit is, and where the readings are filed. Ask the engineer to confirm the limit from the specification. Then stand at the paver for one full day and watch whether the procedure is followed.