MODIFICATION ASPHALT

Aspal Karet

Natural rubber is an elastomer that was originally derived from the milky-looking latex found in plant sap. The purified form of natural rubber is chemical polyisoprene, which can also be produced synthetically. Natural rubber is an ideal polymer for dynamic or static engineering applications in everyday use. Natural rubber is widely used in various applications and products, one of which is as an additive to bitumen (rubber asphalt).

Based on research conducted by the Ministry of Public Works and Public Housing (PUPR), the results show that asphalt with a mixture of rubber is stronger than without rubber mixture and its performance is 50 percent better than the performance measure of asphalt. . Can be measured from the yield, stability, strength to paper, strength to groove can be more than 50 percent. & Nbsp; & nbsp; (source: merdeka.com)

This rubber asphalt can also solve several road damage problems such as permanent deformation damage / rutting on asphalt pavement, and fatigue crack damage on asphalt pavement.

Important factors that make asphalt with rubber mixture better than asphalt with no rubber mixture are:

1. Natural rubber is harder and more elastic than asphalt so that if it is mixed with asphalt it can increase the hardness and elasticity of the asphalt
2. The harder the asphalt, the more resistant it is to permanent deformation / rutting damage.
3. The more elastic the asphalt, the more resistant it is to permanent deformation damage and the more it is resistant to crack damage

& nbsp;

Notes:

Liquid Rubber (Latex) & nbsp; Easy to use but little availability (0.25%) and can not be stored for long.

Solid Rubber More difficult to use, but many availability (97%) and can be stored for a long time. This is a challenge as well as an opportunity to innovate for the rubber and modified asphalt industry

(Source: Dr. Madi Hermadi & ndash; Directorate General of Highways Road Materials Center)