Comparative Stability Analysis of Harder Grade Bitumen (VG-30 & VG-40) By Marshall Mix Design Method on DBM-I

  Ankur Gupta,  Dr. Sheetal Agarwal

Generally in India, the important highways are made up by Dense Bituminous Macadam (DBM) or Bitumen Concrete (BC). Bitumen mix design can be done by Marshall Mix Design Method; is a balancing method to adjust the proportions of various aggregate sizes and bitumen content. The present research focused on the use of harder grade bitumen VG-30 and VG-40 for better performance under heavy traffic load conditions. Marshall Mix Design Method for dense bituminous macadam (DBM-I) was adopted to find the optimum binder content. It was observed that the trend of stability value was increased with increasing bitumen content up to a maximum after which the stability decreases. Stability values were achieved highest for VG-40 grade bitumen than VG-30 grade bitumen at 4.50% of bitumen content. Further, as the OBC was 4.25% for VG-30 and VG-40 respectively, the Marshall Stability for VG-40 grade was also high as compared to VG-30 grade bitumen. It indicated that as the air voids percentage were 4.020% for VG-30 and 4.507% for VG-40 grade respectively.

Keywords- Keywords: Viscosity Grade (VG), Marshal Mix Design, Optimum Binder Content (OBC), Dense Bitumen Macadam (DBM).

Unique Identification Number - IJEDR1703138
Page Number(s) - 986-990
Pubished in - Volume 5 | Issue 3 | September 2017
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Ankur Gupta,  Dr. Sheetal Agarwal,   "Comparative Stability Analysis of Harder Grade Bitumen (VG-30 & VG-40) By Marshall Mix Design Method on DBM-I ", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 3, pp.986-990, September 2017, Available at :http://www.ijedr.org/papers/IJEDR1703138.pdf