SC Asphalt Paving Practice Questions - South Carolina Asphalt Paving Contractor Examination Exam

SCDOT 401.2.1.1 requires binder conforming to AASHTO M 320. What does the grade PG 64-22 mean?

Penetration of 64 dmm at 22°C The binder is intended to perform at a 7-day average maximum pavement temperature of 64°C and a minimum pavement temperature of −22°C Kinematic viscosity of 64 cSt at 220°F The mix must be produced at 64°F and compacted at 22°F

Correct Answer:

The binder is intended to perform at a 7-day average maximum pavement temperature of 64°C and a minimum pavement temperature of −22°C

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