Journal ID : TRKU-14-07-2020-10891
[This article belongs to Volume - 62, Issue - 07]
Total View : 329

Title : The Strength of the Asphalt Binder Thin Films Thickness

Abstract :

The tensile behaviour of two types of asphalt films confined between aggregates particles as adhered stub investigated. Axial finger aggregate samples fabricated using a modified prototype set up allowing construction of micro-scale thin films of asphalt's binder and digital visualization of failure phenomena stages. The effect of temperature (20°C and 10°C), binder type (neat and polymer modified), adhered type (two types of aggregate), and water conditioning were investigated sequentially. The results show that water sensitivity towards aggregate-binder combinations displayed reduced properties in the micro- scale when water conditioned. The tensile strength of the thin film of asphalt increases linearly with the binder film thickness to a maximum value and then it reduces with increasing test temperature and deformation rate. The average strength of the PMA is greater than pure asphalt binder due to the enhanced adhesion properties between asphalt binders with the aggregate particles. This increase requires higher external energy for failure. So the average stiffness reduction and average damage parameter is less than pure binder. The average elastic modulus and average hardness modulus for PMA is greater than unmodified asphalt binder

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