The Structural Properties Evaluation on Ultra-Thin Surfacing Hot Mixture Asphalt Concrete

Abstract:

Overlay as the conventional method to maintain the surface quality of pavement need a large number of fresh natural aggregate and bitumen due to the relatively thick layer and consequently the road geometric must be corrected, so that regarded as not environmentally friendly. The alternative solution is Ultra-Thin Surfacing Hot Mix Asphalt (UTSHMA) which has a thickness of 12-15mm. UTSHMA gradation is designed based on the highest Marshall Quotient value tested by performing Marshall Test of five variations gradation from Standard Specification Construction of Transport Systems. The Optimum Bitumen Content (OBC) obtained by Marshall Test. The bitumen used for this is 60/70 penetration. The several structural tests were performed on the best gradation at OBC consist of Marshall tests, Indirect Tensile Strength (ITS), Unconfined compressive strength (UCS) tests and water permeability test. The UTSHMA mixture with coarse gradation has the greatest Marshall Quotient at 6.35% OBC accompanied by the higher ITS and UCS properties compare to conventional asphalt concrete. The coefficient permeability of UTSHMA is lower than conventional AC, indicated that UTSHMA is more resistant to water penetration. The research concluded that UTSHMA has compromised the standard specification and has sufficient structural properties compare to conventional AC and can be regarded as structural layer of pavement for overlay and road preservation design.

• Periodical: Applied Mechanics and Materials (Volumes 754-755)
• Pages: 828-832
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.754-755.828
• Online since: April 2015
• Authors: Arif Budiarto, Hafid Riyan Purnomo, Ary Setyawan
• Keywords: Durability, Hot Mixture Asphalt, Preservation, Strength, Ultra-Thin Surfacing

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