Microstructure in Adhesion Development Process and Strength Formation Mechanism in Early Stage of Cold Recycled Mixture with Emulsified Asphalt
Table 4
Effects of influencing factors on CRME [14, 28, 62, 87, 91, 93].
Influencing factors
Effects
Curing temperature
The high temperature would accelerate curing.
Curing humidity
Cured in sealed conditions (high humidity) exhibited a slower curing rate and a higher long-term performance.
Materials
Cement dosage
Increasing it would increase the indirect tensile stress (ITS), the high-temperature stability and moisture susceptibility. CRME had better low-temperature cracking resistance with 1%–2% cement.
Emulsified asphalt dosage
Increasing it would increase the resistance against rutting and fatigue.
Water content
The right amount of water is conducive to the compaction.
Aging degree of aged asphalt of RAP
It has a negative effect on the strength formation.
Compaction
The higher compaction power is beneficial to strength formation.