Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Reliability and Life Extension of Components Vol. 14, No. 52 (2020)

Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method

Author and affiliation details
  • Hassan Latifi Corresponding author Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran hassanlatifi3270@gmail.com
  • Nahid Amini Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran ORCID iD0000-0001-8187-3556
DOI
10.3221/IGF-ESIS.52.17
Pages
211-229
Published
Published inVol. 14, No. 52 (2020)Go to the issue

Abstract

There are deficiencies associated with cold mix asphalts, specifically, cold recycled mix asphalts in comparison with hot mix asphalt or hot recycled mix asphalt such as higher moisture susceptibility. Moisture damage of asphalt mixtures is inversely related to the bond quality between aggregates and binder. In this study, Portland cement (PC) and acryl polymer (AP) additives were employed to improve this bond. The effectiveness of used additives in improving the moisture susceptibility of cold recycled mix asphalt was examined using Surface Free Energy (SFE) method. Indirect Tensile Strength test and Dynamic Modulus test were performed to validate SFE method results. Moreover, scanning electron microscope (SEM) images were obtained for better understanding of mixture's microstructure. Also, effect of using granite, limestone and recycled asphalt pavement (RAP) aggregates was evaluated. The findings showed that cement and acryl polymer additives improved resistance of different studied mixtures, specifically, cold recycled mix asphalt against moisture damage by improving the adhesion between aggregate and asphalt. Considering effect of aggregates on moisture susceptibility, limestone-mixtures had the highest resistance while the RAP-mixtures performed the worst among the three. Finally, it was shown that results of SFE method were compatible with the mechanical tests in predicting moisture damage.

Keywords

Article history

  1. ReceivedUntil the next stage: 24 days
  2. Revision requestedUntil the next stage: 3 days
  3. RevisedUntil the next stage: 0 days
  4. AcceptedUntil the next stage: 14 days
  5. Published

How to cite

APA

Latifi, H., & Amini, N. (2020). Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method. Fracture and Structural Integrity, 14(52), 211–229. https://doi.org/10.3221/IGF-ESIS.52.17

IEEE

H. Latifi and N. Amini, “Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method,” Fracture and Structural Integrity, vol. 14, no. 52, pp. 211–229, 2020, doi: 10.3221/IGF-ESIS.52.17.

MLA

Latifi, Hassan, and Nahid Amini. “Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method.” Fracture and Structural Integrity, vol. 14, no. 52, 2020, pp. 211–229. https://doi.org/10.3221/IGF-ESIS.52.17.

Chicago

Latifi, Hassan, and Nahid Amini. 2020. “Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method.” Fracture and Structural Integrity 14 (52): 211–229. https://doi.org/10.3221/IGF-ESIS.52.17.

Harvard

Latifi, H. and Amini, N. (2020) ‘Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method’, Fracture and Structural Integrity, 14(52), pp. 211–229. doi: 10.3221/IGF-ESIS.52.17.

Vancouver

Latifi H, Amini N. Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method. Fracture and Structural Integrity. 2020;14(52):211-229. doi:10.3221/IGF-ESIS.52.17

BibTeX

@article{latifi2020, author = {Latifi, Hassan and Amini, Nahid}, title = {Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method}, journal = {Fracture and Structural Integrity}, year = {2020}, volume = {14}, number = {52}, pages = {211--229}, doi = {10.3221/IGF-ESIS.52.17}, url = {https://doi.org/10.3221/IGF-ESIS.52.17}, issn = {1971-8993} }

RIS

TY - JOUR AU - Latifi, Hassan AU - Amini, Nahid TI - Effect of aggregate type on moisture susceptibility of modified cold recycled mix asphalt: evaluation by mechanical tests and Surface Free Energy method JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2020 DA - 2020/03/02 VL - 14 IS - 52 SP - 211 EP - 229 DO - 10.3221/IGF-ESIS.52.17 UR - https://doi.org/10.3221/IGF-ESIS.52.17 SN - 1971-8993 ER -

Licence

Copyright © 2020 Hassan Latifi, Nahid Amini.

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