Evaluation of HMA Modified with Titan Polymer

Modifying the asphalt binder and mixture becomes one of the best ways to mitigate pavement distress and increase the service life of constructed road networks. This study aimed to evaluate the influence of modified asphalt binders with the best different percentages of polymer and nanoparticles. Typical asphalt binder (penetration, softening point, and viscosity) and frequency sweep tests were used to evaluate the physical and rheological properties of modified asphalt binders with 5% Acrylonitrile Styrene Acrylate (ASA), 5% aluminum oxide nanoparticles (Al2O3), and 5% calcium carbonate (CaCO3). The results showed that the physical properties of all modified blends improved compared to those of the base asphalt binder. The improvement in softening point was up to 19%, the penetration reduction was nearly 69%, and the sensitivity to elevated temperatures was reduced by up to 13%. Evaluation of the rheological properties showed that modified asphalt with 5% Al2O3 binder had the highest permanent deformation resistance, followed by 5% ASA. The 5% CaCO3 binder showed a small improvement compared to the other samples. The results showed that the 5% Al2O3 binder had the highest complex modulus and the lowest phase angle, which means that it has the best viscoelastic properties. Therefore, it can be recognized as the best asphalt binder among the modified binders in this study.

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Polymer and Nanomaterial modified Asphalt Binder

Emmaima,

Ali,

Gallouz

2024

An Assessment of Testing and Conditiong Protocol to Evaluate Asphalt Mixtures

Bazuhair

Alqahtani

2023

Asphalt mixtures frequently contain a wide variety of components that may interact. When put into service, they can be damaged due to several factors such as traffic, loading, and environmental impact. Thus, it is necessary to predict or simulate the asphalt mixtures’ damage and performance in service utilizing laboratory conditioning protocols and tests. This paper investigates the property measurements themselves and how a mixture test can simultaneously assess oxidation and moisture damage. In this study, three asphalt mixtures are used with different mixture tests such as Indirect Tensile Tension (IDT), Cantabro Mass Loss (CML), and Hamburg Loaded Wheel Tracking (HLWT). Unaged (control) and two laboratory conditions were utilized to simulate the performance of the mixture in service. The result showed that the laboratory conditioning of the combined effects of oxidation and moisture simulates better the asphalt damages in service than laboratory single environment effect conditioning. The CML test is recommended for the evaluation and capture of these combined damage effects.

Performance Evaluation of Asphalt Mixtures with Rediset LQ-1200 Additive

Nguyen,

Le,

Nguyen

et al. 2024

One of the primary causes of premature pavement deterioration in Asphalt Concrete (AC) mixtures is the breaking of the adhesive bond between the aggregate and the binder. The purpose of this study is to assess the performance characteristics of AC mixture utilizing the Rediset LQ-1200 additive. In order to achieve this goal, tests such as the Marshall Stability (MS), Marshall Stability Ratio (MSR), Indirect Tensile (IDT), indirect tensile cracking, and Wheel Tracking (WT) were deployed to evaluate the mechanical properties of AC mixtures. The findings demonstrated a considerable improvement in the physical parameters of the AC mixture with the Rediset LQ-1200 additive compared to the base AC mixture. The MS and MSR were improved by about 28% and 13%, respectively, while the AC mixture's resistance to rutting and cracking was efficiently increased.