Pavement composition

Claim 1

A METHOD OF REPAIRING PAVEMENT SUBJECT TO FATIGUE CRACKING WHICH COMPRISES THE STEPS OF PREPARING AN ELECTROMERIC MATERIAL COMPRISED OF A REACTION PRODUCT OF PAVING ASPHALT AND NON-OIL RESISTANT, ASPHALT-SOBULBE RUBBER, AND AN ASPHALT SOLVENT, SAID ASPHALT HAVING A PENETRATION GRADE OF ABOUT 10-10 TO ABOUT 200-300, SAID RUBBER BEING AN UNVULCANIZED, VULCANIZED OR RECLAIMED RUBBER SELECTED FROM THE FOLLOWING GROUP: ISOPRENE RUBBER, NATURAL RUBBER, BUTADIENE RUBBER, BUTADIENE-STYRENE RUBBER, BUTYL RUBBER AND ETHYLENE PROPLENE RUBBER; AND THE METHOD COMPRISING HEATING THE ASPHALT TO A FIRST TEMPERATURE BETWEEN ABOUT 300* AND ABOUT 500*F. TO YEILD HOT LIQUID ASPHALT HAVING A VICOSITY OF LESS THAN 200 CENTPOISES; REACTING BETWEEN ABOUT 2 AND ABOUT 4 PARTS, BY WEIGHT, OF THE HOT ASPHALT WITH ONE PART OF THE RUBBER, GRANULATED TO A MESH SIZE BETWEEN -NO. 4 AND +NO. 50, TO FORM A JELLIED-ASPHALT-RUBBER COMPOSITION HAVING A VISCOSITY OF FROM ABOUT 2000 TO ABOUT 200,000 CENTIPOISES; ALLOWING THE JELLIEDASPHALT-RUBBER COMPOSITION TO COOL TO A SECOND TEMPERATURE OF FROM ABOUT 200* TO ABOUT 400*F.; MIXING THE COOLED JELLIEDASPHALT-RUBBER COMPOSITION WITH BETWEEN ABOUT 5 PERCENT AND ABOUT 20 PERCENT BY VOLUME OF THE COMPOSITION OF AN ASPHALT SOLVENT SELECTED FROM THE GROUP CONSISTING OF DEROSENE, ALIPHATIC AND AROMATIC HYDROCARBONS, SOLVENT NAPHTHA, LIGROIN, PAINT THINNER, DIESEL OIL, LIGHT OIL FRACTIONS FROM COAL TAR, WHITE GASOLINE, PETROLEUM SPIRITS, PARAFFINIC OILS, AND HALOGENATED HYDROCARBONS, SAID SOLVENT HAVING A BOILING POINT ABOVE SAID SECOND TEMPERATURE BUT NOT LESS THAN ABOUT 175*F. TO FORM THE ELASTOMERIC MATERIAL HAVING A VISCOSITY OF FROM ABOUT 1000 TO ABOUT 10,000 CENTIPOISES, SAID MATERIAL ADAPTED TO SET UP AND INCREASE ITS VISCOSITY TO A VALUE EQUAL TO THE JELLIED-ASPHALT RUBBER COMPOSITION AFTER A PREDETERMINED PERIOD OF TIME AT SAID SECOND TEMPERATURE WITH LESS THAN ABOUT A 5 PERCENT LOSS OF THE SOLVENT; AND APPLYING A PREDETERMINED AMOUNT OF THE MATERIAL TO THE SURFACE TO BE TREATED AND ALLOWING IT TO SET UP.