The Effect of Mixing Natural Aggregates with Artificial Aggregates on Marshall Parameters

Abstract


 
 
 
 In general, aggregates consist of Natural Aggregates (NA) and Artificial Aggregates (AA). Artificial aggregates, such as Crushed Stone (CS), are aggregates produced through the crusher industry which has a rough and angular surface so that it has excellent adhesion to asphalt. Meanwhile, NA is an aggregate produced from a river which has a smooth and large hollow surface texture. The cost for AA is very expensive when compared to NA, so it is necessary to experiment with mixing NA and AA to minimize the use of AA. NA are obtained from Sungai Jalin, Jantho City District, Aceh Besar District. The method used refers to the specification of Bina Marga 2010 Revision four (2018) and the Indonesian National Standard (SNI). The purpose of this study was to see the effect of the combination of NA and AA as a substitute for coarse aggregate on the AC-WC concrete asphalt layer. The specimens used were 66 specimens with substitution of NA and AA into the asphalt layer were 0% NA: 100% AA, 25% NA: 75% AA, 50% NA: 50% AA, 75% NA: 25% AA, 100% NA : 0% AA. Based on the research results, the best value for the optimum marshall parameter is the substitution of 25% AA: 75% BP at asphalt content of 5.00%, the stability value is 1492.37kg with a VIM value of 3.69%, VMA 16.17%, VFA 77.88% and MQ 573.87kg / mm which have met the requirements of the 2010 Revision four (2018) Bina Marga specification.
 
 
 

Functional Performance of Modified Porous Asphalt Mixtures with Gilsonite Additive

“…[4] [7] Porous asphalt mixtures are different from Asphalt Concrete-Wearing Course (AC-WC) pavement mixtures in general. This can be seen from the test results carried out by Riski [6] showing that the stability values and marshal parameters occupy the requirements for the pavement mixture. Many improvements have been made to the performance of porous asphalt mixtures, namely by adding certain ingredients to the porous asphalt mixture.…”