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Investigation on Bonding Between Aggregates and Asphalt Binder Containing Warm Mix Additives by Vivek Pratap Wagh; Mayank Sukhija; Ankit Gupta is a Engineering article available to read on EtoBox.

What is Investigation on Bonding Between Aggregates and Asphalt Binder Containing Warm Mix Additives about?

Increased moisture susceptibility has been identified as one of the potential failures for warm-mix asphalt (WMA). In order to critically understand the moisture damage mechanism, the evaluation of bond strength between aggregate and asphalt binder holds significant importance. The bonding mechanism can be easily explained by Pneumatic Adhesion Test (PAT). This study evaluated the bond between various aggregates and warm mix (WM) modified asphalt binders using PAT. Five aggregates, two base binders, and four WM additives with varying dosages have been selected for the present experimental study. The objective is to identify the relative contribution of these factors towards the development of bond strength and their consequence against moisture damage. Bond strength was evaluated in terms of the pull-off tensile strength (POTS), whereas moisture susceptibility was determined using the bond strength ratio (BSR) parameter. Results showed that the bonding between aggregate and asphalt binder relies on the aggregate type, base binder, WM additives and their dosages. Since PAT was carried out on both wet and dry-conditioned samples, it was found that the conditioning state (wet and dry)

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Author

Vivek Pratap Wagh; Mayank Sukhija; Ankit Gupta

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)