CRUMB RUBBER MODIFIED BITUMEN (CRMB) COMPOSITIONS AND PROCESS THEREOF

摘要

The present invention relates to a modified bitumen composition comprising bitumen; crumb rubber; FCC spent catalyst; and optionally at least one low value polymer. The present invention also discloses a method for making a modified bitumen composition comprising heating bitumen to a temperature between about 120 degree C and about 200 degree C; adding FCC spent catalyst to the heated bitumen to obtain a mixture; optionally adding at least one low value polymer to the above mixture followed by homogenizing the mixture for about 30 minutes to about 10 hours; adding crumb rubber to the mixture; and homogenizing the resultant mixture for about 30 minutes to about 24 hours to obtain the modified bitumen.