Open AccessImmersion index HRS-WC Halp-Gap gradation with oil palm waste filler substitution
Author(s) -
Daud,
Acep Noldi Musu,
Rais Rachman,
Benny Kusuma
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1088/1/012087
Subject(s) - gradation , asphalt , filler (materials) , materials science , composite material , cement , aggregate (composite) , palm oil , waste management , pulp and paper industry , chemistry , computer science , engineering , computer vision , food science
The purpose of this study was to analyze the effect of adding ash from palm oil waste as a substitute for filler material from cement on the immersion index of the HRS-WC mixture using semi-gap gradations. The bitumen content used was 5.9%; 6.4%; 6.9%; 7.4% and 7.9%. Meanwhile, the proportion of oil palm ash waste to cement is 0%: 100%, 25%: 75%, 50%: 50%, 75%: 25% and 100%: 0%. The test results show the effect of adding CPO filler content on asphalt content, the higher the percentage of addition of asphalt content, the number of cavities in the mixture, the smaller the cavities in the aggregate and the more cavities filled with asphalt, up to the addition of 50% CPO content, then 50% CPO increase up to 100% reduced asphalt tar voids. The Marshall Immersion test obtained the immersion index for the Lataston HRS-WC mixture with a semi-gap gradation using CPO Waste Ash as a cement substitute material, it is susceptible to water, this is because even though the mixed cavity is filled with CPO Waste Ash, but effective asphalt which also functions to waterproof the mixture will have reduced. So that if you use CPO waste ash as a substitute for cement filler, the use of asphalt content must also be large (added). The semi-gap gradation in the Lataston HRS-WC mixture also affects the level of water tightness, where the semi-gap gradation will form a denser mixture so that it becomes more waterproof.