Dynamic testing of hot mix asphalt for moisture susceptibility assessment

Breakah, Tamer; Williams, R. Christopher

doi:10.1016/j.conbuildmat.2013.05.014

Cited by 9 publications

(2 citation statements)

References 2 publications

(2 reference statements)

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“…Anthony D. Staston et al [2] believed that the angularity of fine aggregates had a great influence on the compaction of the pavement during the rolling stage, but had little effect on the compaction of the pavement during the operation period. Breakah [3] and Bausano [4] studied the influence of fine aggregate angularity on the design life of asphalt pavement. When using the same lithological fine aggregate, the angularity is good, and the pavement design life is long.…”

Section: Prefacementioning

confidence: 99%

Application Research of Gravel and Machine-Made Sand along the KKH-2 Project in Pakistan on Asphalt Pavement

Hu¹,

Tian²,

Wang³

et al. 2019

WJET

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According to the characteristics of stone along the KKH-2 project in Pakistan, the applicability of gravel and machine-made sand for road engineering was studied. Through investigation, the types of stone along the project were relatively simple, and the stone materials used for road construction were mainly limestone, sandstone and pebbles, and the reserves were abundant. The experiment research and analyses comparisons of the parameters and road performance characteristics of natural gravel materials were carried out, and the design parameters and road performance indicators of natural grit in the current code were supplemented and adjusted to make it more suitable for Pakistan to use natural gravel materials for road construction. Thesis combines the project, proposing that mechanism sand and natural sand mixed concrete is not inferior to natural sand mixed concrete in terms of technical performance, and the overall cost is lower than that of natural sand mixed concrete. The research results are of great significance for saving engineering construction costs, ensuring road performance and prolonging service life.

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Section: Prefacementioning

confidence: 99%

Application Research of Gravel and Machine-Made Sand along the KKH-2 Project in Pakistan on Asphalt Pavement

Hu¹,

Tian²,

Wang³

et al. 2019

WJET

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“…The third group consists of external factors such as quality of pavement, traffic, and environmental conditions. 8,9 Traffic-generated stresses and penetration of moisture into pavement layers during its service life are the major parameters that intensify the loss of adhesive strength in asphalt mixtures and binder–aggregate separation, which in turn can form the bases for other damages and early destruction of pavements. 7,10–12 In particular, the moisture damage leads to a reduction in mixtures modulus up to 25%, an increase in rutting up to 60%; and decreased fatigue life up to 30%.…”

Section: Introductionmentioning

confidence: 99%

The fatigue behavior of polymeric sulfur-modified asphalt mixtures subjected to freeze-thaw conditioning

Kavussi

Ayar²,

Pedram

2019

Journal of Thermoplastic Composite Materials

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Abundance, affordability, and also the usability of sulfur as a part of the binder are the main reasons for using this additive in asphalt mixtures. However, lack of proper adhesion and brittle behavior of sulfur-modified asphalt mixtures could make them susceptible to moisture damage and fatigue cracking. In this regard, anti-stripping agents and some polymers like crumb rubber may be used to overcome these types of distresses. This research aimed at investigating the effects of polymeric sulfur and crumb rubber on the moisture sensitivity and fatigue behavior of asphalt mixtures. To this end, asphalt mixtures were subjected to 1 and 3 freeze-thaw cycles. Then, an indirect tensile fatigue test was carried out. Moreover, the response surface method (RSM) was used to assess the interaction between various parameters in samples containing polymeric sulfur and crumb rubber. Results showed that with an increase in polymeric sulfur content, the fatigue life was reduced and the moisture sensitivity was increased. Additionally, the RSM was found to be effective in ranking parameters influencing the performance of asphalt mixtures. According to the experimental results, a crumb rubber-modified binder could improve the fatigue life of the polymeric sulfur-modified mixture up to 70%. Furthermore, experimental results and RSM analysis indicated that crumb rubber would be more effective in higher numbers of freeze-thaw cycles and raised temperatures, in which polymeric sulfur-modified asphalt mixtures are probably prone to moisture damages (i.e. the lack of adequate cohesion and adhesion).

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An Evaluation of Moisture Damage Resistance of Asphalt Concrete based on Dynamic Creep Characteristics

2019

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Dynamic testing of hot mix asphalt for moisture susceptibility assessment

Cited by 9 publications

References 2 publications

Application Research of Gravel and Machine-Made Sand along the KKH-2 Project in Pakistan on Asphalt Pavement

Application Research of Gravel and Machine-Made Sand along the KKH-2 Project in Pakistan on Asphalt Pavement

The fatigue behavior of polymeric sulfur-modified asphalt mixtures subjected to freeze-thaw conditioning

An Evaluation of Moisture Damage Resistance of Asphalt Concrete based on Dynamic Creep Characteristics

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