Moisture Susceptibility of Organophilic Nano Clay Modified Asphalt Mixtures

International Journal of Civil Engineering

© 2022 by SSRG - IJCE Journal

Volume 9 Issue 9

Year of Publication : 2022

Authors : M. Fanoos Ahmad, I. Hafeez, Farhan

10.14445/23488352/IJCE-V9I9P103

How to Cite?

M. Fanoos Ahmad, I. Hafeez, Farhan, "Moisture Susceptibility of Organophilic Nano Clay Modified Asphalt Mixtures," SSRG International Journal of Civil Engineering, vol. 9,  no. 9, pp. 13-21, 2022. Crossref, https://doi.org/10.14445/23488352/IJCE-V9I9P103

Abstract:

The durability is one of the major assets of bituminous paving mixtures. One of the major factors that can interfere with the functioning of mixtures is moisture damage. . Actually, Moisture damage deteriorates asphalt pavement. An asphalt mixture or pavement is susceptible to moisture when there is a weakening between the bond of aggregate and asphalt binder in some moisture. When this weakening becomes severe, it leads to the failure of HMA pavement. The existence of moisture in the HMA pavement causes two mechanisms: a) Loss of adhesion between the bitumen and aggregate surface and b) Loss of cohesion in the mixture.
      The goal of this study is, therefore, to observe the moisture susceptibility of different recipes of five different percentages of organophilic nano clay to be mixed with the asphalt mixtures with the same aggregate quarry/source and two binder types of different penetration grade and properties, and to check the performance of these sample combinations with four laboratory tests: Static Immersion Test, Total Water Immersion Test (TWIT) Test, Boiling water Test and Rolling Bottle Test. In order to collect the information necessary for loose coated bituminous paving mixtures, the tests necessary to do so have been performed at the Taxila Institute of Transportation Engineering (TITE). The results show that adding 4.5% ONC to both binder types decreases moisture damage and shows the best resistance against moisture damage. The Rolling Bottle Test is the best test to differentiate between different loose-coated Asphalt mixtures, regardless of the time taken by the test.

Keywords:

Moisture Sensitivity Tests, Organophilic Nanoclay, moisture susceptibility, Rolling Bottle Test, Boiling water test, Static immersion test, Total immersion test.

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