Open AccessMechanical Characteristics of the Asphaltic Concrete Mixture with the Addition of Steel Fibers
Author(s) -
Joshua Christabel Pardamean,
Anissa Noor Tajudin
Publication year - 2020
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/1007/1/012065
Subject(s) - asphalt , materials science , void (composites) , composite material , asphalt concrete , durability , aggregate (composite)
Roads have the strength and durability to be able to handle the existing traffic load for their planned lifespans, and damage must be minimized. Methods of minimizing damage include self-healing. Before testing self-healing ability, steel fibers that have a solid density and as a good conductor must be tested for their mechanical characteristics in the AC-WC mixture. These consist of the Marshall characteristic tests and the volumetric characteristic test. With an asphalt content of 5.7%, the 0.25%, 0.5%, 0.75%, and 1% addition of steel fibers into the asphalt- concrete wearing-course (AC-WC) mixture increases the value of Void Filled with Asphalt (VFA), stability, and the Marshall Quotient and reduces the value of Void in The Compacted Mixture (VITM), Void in Mineral Aggregate (VMA), and flow. However the VITM value obtained is below the 3% requirement, because the number of cavities in the mixture is already close to the minimum requirement without the addition of steel fibers. Another reason is the high 5.7% asphalt content. The optimum steel fiber content, obtained using the narrow range method, is 0.625%. Based on its mechanical characteristics, steel fiber is a recommended additive.