Materials that are usually used to modify asphalt mixtures are polymers, generally
in the form of synthetic polymers used can be synthetic polymers or natural
polymers. Natural rubber has good potential in Indonesia, making it a good
'alternative if applied in Indonesia. Various efforts continue to be made to find
alternative modifiers that can improve the quality of aspa. The purpose of this
study was to determine the effect of adding raw rubber to 80/100 penetration
asphalt with a rubber content of 6%, 7%, and 8% through penetration and ductility
testing processes. The results showed the greater the content of raw rubber, the
greater the value of Penetration and Penetration Ductility. The addition of raw
rubber to 80/1 00 penetration asphalt is 7% and 8%, judging from the
specifications can change the type. The results of the penetration and ductility test
with the best quality obtained are with a rubber content of 6% with a penetration
value of 118.lmm and a ductility value of llOcm .