Evaluation of Moisture Damage of Asphalt Mixtures Containing Polytec Additive Using Modified Lathman and Pull Off Tests | ||
| مهندسی زیر ساخت های حمل و نقل | ||
| Volume 9, Issue 1 - Serial Number 33, May 2023, Pages 119-135 PDF (1.49 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.22075/jtie.2023.29638.1628 | ||
| Authors | ||
| Mikaeil Naseri Yalghouzaghaj* 1; Mehdi Mollavali2; Babak Golchin3; Ramin Meshkabadi4 | ||
| 1میکائیل Department of civil engineering, salmas branch, islamic azad university, salmas, iran | ||
| 2Department of Civil Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran | ||
| 3Department of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran | ||
| 4Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran | ||
| Receive Date: 17 January 2023, Revise Date: 03 May 2023, Accept Date: 12 May 2023 | ||
| Abstract | ||
| Moisture damage in asphalt mixtures generally occurs due to the separation of bitumen from the surface of stone materials and due to the presence of water. This type of failure causes stripping and premature failures. Investigating the effective factors in this type of damage can be useful in improving the process of designing and producing asphalt mixtures. In the past years, significant research and efforts have been made to reduce these types of failures. In this article, the effect of adding Polytec 505, as a new material with complex amines that reduce the acidic nature of bitumen, on the moisture damage of asphalt mixtures has been investigated. For this purpose, two types of granite and lime aggregate and 60-70 bitumen have been used. The modified Lottman test was used to check the moisture damage, and pull-off tests were used to evaluate the cohesion properties of bitumen and the adhesion of bitumen to aggregate. The results show that the use of this additive causes an increase in the indirect tensile strength ratio of samples with granite and limestone aggregate, and as a result, the performance of these samples against moisture damage improves. This improvement increases with the increasing of this additive. The results of the Pull-off test show that the use of this additive improves the adhesion and cohesion of pull-off pull off test. | ||
| Keywords | ||
| Asphalt Mixture; Moisture Damage; Cohesion and Adhesion; Polytec 505; Pull-off test | ||
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