Showing papers on "Rubberized asphalt published in 1998"

Bituminous compositions prepared with process treated vulcanized rubbers

Abstract: Preparing a stable rubber asphalt as follows concentrate: preparing a first material comprising bitumen and the materials representing at least about 15% (by weight) of the powder particles, plastic particles during the swelling occurs in situ, and then the materials subjected to shear and temperature conditions of processing, the vulcanizate network of the rubber particles is dissociated, and thus the vulcanizates digester which is coupled to the asphalt. After the stable rubberized asphalt concentrate, whether after 48 hours storage at about 320 ° F, or diluted to a lower concentration in the ASTM solubility test, showed a stable, non-sedimenting.

Micro-thermal stress analysis of cement based pavement composite

Abstract: A four-layer sphere model for microscopic thermal analysis was proposed based upon the structural form of cement based pavement composites. Using temperature induced stresses of pavement structure as the external field, the micro-thermal stresses of two types of cement based pavement composite were calculated. The results showed that, by introducing the low stiffness rubberized asphalt in the interphase of coarse aggregate phase and cement mortar phase of Portland cement concrete, the interfacial thermal stresses could be reduced significantly, thus improving crack resistance of the pavement material under low temperature environment. Factors affecting micro-thermal stress of cement based pavement composite were discussed.