Abstract
It is extremely important that the modifier is thoroughly mixed with bitumen before the preparation of the bituminous mix so that the modified bitumen retains its premium properties. Different types of modifiers require different techniques of blending. The exact temperature and time of blending depends upon the type and amount of modifier use as it plays very vital role in obtaining the required properties of modified bitumen. In this study the crumb rubber modified bitumen (CRMB) samples are prepared for varying blending temperature and blending time. From the study it is determine that the various properties of CRMB varies with blending temperature and blending time. The optimum blending temperature and blending time found out 175 0 C and 45 minutes
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