Direct tensile test evaluation and characterization for mechanical and rheological properties of polymer modified hot mix asphalt concrete

Abed, Mohammed A.; Al-Tameemi, Ahmed F.; Abed, Alaa H.; Wang, Yu

Abstract

Using polymer to modify asphalt binder for better performance has become popular in pavement engineering, for which to evaluate the effect of polymer addition on the properties of the asphalt concrete is essential for mix design. Conventional mechanical test methods, primarily using bending of beams and indirect splitting, are not only materially and timely costly and labor intensive but also provide no direct information for the viscoelastic and rheological characteristics
of the materials. This paper reports a study using direct tensile test
(DTT) to evaluate the effect of polymer on both mechanical and rheological properties of modified asphalt concrete. Two types of polymers, which are styrene-butadiene-styrene (SBS), and a mixture of SBS and polyvinyl chloride (PVC), were investigated on two mixes using fine and coarse aggregates, respectively. It has been found that SBS generates improvement for both mechanical and rheological properties of hot mix asphalt concrete. However,
using a hybrid mixture of SBS and PVC shows that PVC can further improve the mechanical properties, but deteriorate the toughness of the asphalt concrete. At the end, a simple quadric polynomial model has been proposed to characterize the combined SBS and PVC effects for the sake of the guidance for mix design.

• Journal Article Type: Article
• Acceptance Date: Jul 19, 2022
• Online Publication Date: Jul 30, 2022
• Publication Date: Jul 30, 2022
• Deposit Date: Aug 1, 2022
• Publicly Available Date: Jul 31, 2023
• Journal: Polymer Composites
• Print ISSN: 0272-8397
• Electronic ISSN: 1548-0569
• Publisher: Wiley
• Volume: 43
• Issue: 9
• Pages: 6381-6388
• DOI: https://doi.org/10.1002/pc.26949
• Keywords: Materials Chemistry, Polymers and Plastics, General Chemistry, Ceramics and Composites
• Publisher URL: https://doi.org/10.1002/pc.26949
• Additional Information: Additional Information : "This is the peer reviewed version of the following article: Abed, M. A., Al-Tameemi, A. F., Abed, A. H., Wang, Y., Polym. Compos. 2022, 1. https://doi.org/10.1002/pc.26949 , which has been published in final form at https://doi.org/10.1002/pc.26949. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited."