Natural Rubber Modified Bitumen or Rubberised Bitumen: Natural Rubber Modified Bitumen (NRMB) is one of Kochi Refinery’s premium products that revolutionized road development. NRMB has been on a fast track since its introduction in 1999.
Bitumen, which is derived from petroleum, is a critical component in road building. Polymer added to Bitumen enhances both quality and longevity of roads. Kochi Refinery in association with leading research institutes made an in-depth study on feasibility of using natural rubber available in abundance in Kerala, to develop the premium product, NRMB. NRMB has improved many roads throughout the region. Its success track is evident from the smooth Seaport-Airport road in Cochin. NRMB is a superior mix of bitumen and natural rubber latex. It is superior in quality to ordinary bitumen in terms of penetration, softening point and elastic recovery. NRMB is not affected by temperature fluctuations-less bleeding at high temperature and less cracking at low temperature. Improved skid resistance and more service life are the booster effects along with prime factors like save fuel, reduces traffic noise pollution and atmospheric pollution. All this sums up to reduced road maintenance cost.