Improvement of asphalt concrete moisture damage resistance using Saline Coupling Agent

2014 ◽  
pp. 1523-1534 ◽  
Author(s):  
Meng Guo ◽  
Yiqiu Tan ◽  
Rui Zhang
Keyword(s):  
Asphalt Concrete ◽  
Coupling Agent ◽  
Moisture Damage ◽  
Damage Resistance

scholarly journals Effect of Nanoclay Particles on the Performance of High-Density Polyethylene-Modified Asphalt Concrete Mixture

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 434
Author(s):  
Ghada S. Moussa ◽  
Ashraf Abdel-Raheem ◽  
Talaat Abdel-Wahed
Keyword(s):  
Asphalt Concrete ◽  
High Density Polyethylene ◽  
Storage Stability ◽  
Chemical Change ◽  
Asphalt Binder ◽  
Moisture Damage ◽  
High Density ◽  
Damage Resistance ◽  
Negative Impacts ◽  
Roadway Construction

Utilizing polymers for asphalt concrete (AC) mixture modification has many drawbacks that hinder its wide implementations for roadway construction. Recently, research on employing complementary materials, such as nanomaterials, to balance negative impacts of polymers while enhancing the AC mixture’s performance has received great attention. This study aimed to investigate the effect of incorporating nanoclay (NC) particles on the performance of a high-density polyethylene (HDPE)-modified AC mixture. A 60/70 asphalt binder was first modified with HDPE, and then NC particles were gradually added at a concentration of 1–4% by weight of the asphalt binder. The binders’ physical characteristics, storage stability, and chemical change were scrutinized. AC mixture performance, including pseudo-stiffness, moisture damage resistance, stripping susceptibility, and rutting tendency, was investigated. A statistical analysis on the experimental results was conducted using Kruskal–Wallis and Dunn tests. Test results showed that employing NC/HDPE significantly increased penetration index and thereby enhanced binder temperature sensitivity. Moreover, it prevented oxidation action and separation and, therefore, enhanced binder storage stability. Furthermore, incorporating NC amplified pseudo-stiffness and significantly improved resistance against moisture damage and stripping of HDPE-modified mixtures. Moreover, it improved both elastic (recoverable) and plastic (unrecoverable) deformations of mixtures. The most satisfactory results were attained when incorporating 3% of NC.

Asphalt Concrete Moisture Damage Resistance: An Evaluation of the Coating Ability of Aggregates and Binders

2018 ◽  
Vol 934 ◽  
pp. 217-221 ◽  
Author(s):  
Peerapong Jitsangiam ◽  
Hamid Nikraz ◽  
Korakod Nusit
Keyword(s):  
Asphalt Concrete ◽  
Hydrated Lime ◽  
Moisture Damage ◽  
Asphalt Pavements ◽  
Moisture Sensitivity ◽  
Damage Resistance ◽  
Asphalt Cement ◽  
Bottle Test ◽  
Essential Properties ◽  
Moisture Conditions

Moisture related damage is the single most significant issue facing asphalt pavements worldwide. The improvement of moisture damange resistance of asphalt concrete as a asphalt pavement surface is the way to enhance essential properties of the asphalt concrete mixture components between mix aggregate and a binder (asphalt cement) to withstand adverse effects from moisture. Moisture damage consists of two key mechanisms, the loss of adhesion between the binder and aggregate and the loss of cohesion within the asphalt contrete matrix. This research aims to investigate the adhesion mechanism through the use of the so-called rolling bottle test (RBT) to assess the binder coverage under moisture conditions. Through the use of Western Australian aggregates and Main Roads WA specific binders and adhesion agent, hydrated lime. The percentage coverage was assessed to determine the moisture sensitivity of the aggregate-binder interface. This method allows for a fundamental mechanism of moisture damage to be analysed from an inside out perspective, free of external influencing factors. The results from this study showed that different study aggregates yielded different levels of moisture damage resistance based on the results of RBTs, while the stiffer C320 binder showed greater adhesion to the both study aggregate types. The addition of hydrated lime significantly increased the percentage coverage all samples.

A comprehensive evaluation of moisture damage of asphalt concrete mixtures

2015 ◽  
Vol 18 (2) ◽  
pp. 169-182 ◽  
Author(s):  
Peter E. Sebaaly ◽  
Elie Y. Hajj ◽  
Thileepan Sathanathan ◽  
Sivakulan Shivakolunthar
Keyword(s):  
Asphalt Concrete ◽  
Comprehensive Evaluation ◽  
Moisture Damage ◽  
Concrete Mixtures

scholarly journals Evaluation of moisture damage in asphalt concrete with CRM motorcycle tire waste passing #50 sieve size

2017 ◽  
Author(s):  
Henri Siswanto ◽  
Bambang Supriyanto ◽  
Pranoto Pranoto ◽  
Pria Rizky Chandra ◽  
Arief Rahman Hakim
Keyword(s):  
Asphalt Concrete ◽  
Moisture Damage ◽  
Sieve Size
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