Dynamic stability of semi flexible pavement with waste tire rubber powder as additive material and natural zeolite as cement replacement.

Permanent deformations that occur in asphalt concrete pavements is due to weak stability of the mixture in serving traffic loads. Damage to plastic deformations that can damage the functional road so that it becomes structural damage needs to be studied further to obtain the right solution and repair. Weak ties and asphalt fatigue are one of the early causes of damage characterized by the appearance of fine cracks on the pavement surface. The modification of porous asphalt into semi-flexible pavement (PSF) is one of the improvement solutions in improving road pavement performance. This study aims to evaluate the dynamic stability of SFP using rubber tire waste powder (WTR) as an additive to asphalt rheology and natural zeolite as a substitute for cement based on repeated load tests. WTR as asphalt rheology material and zeolite as a substitute for cement mortar is designed to obtain SFP mixed matrices that are in accordance with the standards of Bina Marga Indonesia in 2010 and the Australian Asphalt Pavement Association (AAPA) in 2004. SFP specimen testing was carried out at the age of 14 days with the aim of adequacy of the life of the cement mortar. From the results obtained showed a significant improvement to the dynamic stability of the SFP mixture with a composition of 5% zeolite. The increase in the dynamic stability value of the SFP mixture due to the rigidity of the mixture with the substitution of zeolite in cement mortar so that it is more resistant to the influence of plastic deformation due to repeated loads. [ABSTRACT FROM AUTHOR]