The effect of gradation on the mixed characteristics of HRS-WC using campurejo material

Abstract

Hot Rolled Sheet (HRS) is a type of hot asphalt mixture as a layer of the road surface that will transmit traffic loads to the layer below to the subgrade. To get good results, the mixture must be designed in accordance with the provisions in the specifications with due regard to the limitations of the limits. The purpose of this study was to determine the effect of gradation on the characteristics of the HRS-WC mixture using gaps. The asphalt content used for the top gradation test was 5.50%, 6.00%, 6.50%, 7.00% and 7.50%, the middle gradation was 5.00%, 5.50%, 6.00%, 6.50% and 7.00% while the lower gradation used asphalt content 4.50%, 5.00 %, 5.50%, 6.00% and 6.50%. The results showed that the use of Campurejo aggregate as seen in the results of the aggregate characteristic test can be used as a mixture for HRS-WC, however in the use of grading it is recommended to use a gradient closer to the middle grading. Likewise, the use of asphalt content uses a percentage of asphalt content above ideal asphalt content. The use of upper and lower aggregate grading results in cavities that are close to specification limits. It is feared that if it is applied in a field with a control that is not the same as in the laboratory, it will result in a cavity outside the specification. In addition, using a middle grading can optimize stability and minimize the use of asphalt.