INVESTIGATION OF THE CURING VARIABLES OF ASPHALT-RUBBER BINDER

摘要

A curing study was undertaken to determine the effect of asphalt type, rubber content, rubber mesh size, rubber source, curing time, curing temperature, and rate of mixing on the properties of asphalt-rubber binder. Properties studied were asphalt composition, rubber dissolution, molecular weight distribution, and the low-, intermediate-, and high-temperature rheological properties. These properties were found to be dependent on the above listed variables. Most notable were the curing variables of curing time, curing temperature, and rate of mixing. Increasing the curing time, curing temperature, and rate of mixing increased the amount of rubber dissolution into the asphalt during the curing process.