Improved method of considering air void and asphalt content changes on long-term performance of asphalt concrete pavements

Zeiada, Waleed; Kaloush, Kamil; Underwood, B. Shane; Mamlouk, Michael

doi:10.1080/10298436.2013.857775

Cited by 21 publications

(8 citation statements)

References 5 publications

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“…For example, rutting is the main deterioration cause of flexible asphalt pavement due to increased stresses in heavy-duty pavements (Zeiada et al 2014). However, rigid pavements can be susceptible to relatively slow setting time during the construction phase and poor riding quality (and noise) caused by the joints required to accommodate differential expansion/contraction during service (Toraldo 2013).…”

Section: Introductionmentioning

confidence: 99%

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Hou

Huang

2015

International Journal of Pavement Engineering

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To further understand engineering properties of grouted macadam composite materials (GMCM) used as a surfacing layer in pavement, the mechanical properties and durability characteristics of GMCM were evaluated, and the relevant strength mechanisms were investigated at the micro level. Results indicate that GMCM has better high-temperature stability, fatigue performance and moisture stability than that of conventional asphalt mix, while it shows an acceptable decrease in lowtemperature crack resistance due to the relative brittleness of hardened cement paste. The hardened cement paste also generates a spatial network crystalline lattice in asphalt mix skeleton to form a three-dimensional integral coagulationcrystalloid structure. This facilitates the asphalt mix skeleton and hardened cement paste to bear loads in unison and increase durability of the GMCM. Further, the fibre-like hydrated products of fresh cement slurry on the bitumen film surface increase the interfacial strength between bitumen and hardened cement paste due to toughening and bridging effects, which plays an important role to enhance mechanical properties and durability of GMCM. Finally, GMCM strength is from the internal friction of asphalt mix skeleton, the network structure of hardened cement paste and the adhesion between porous asphalt mix and hardened cement paste. It is concluded that GMCM can better meet the requirements of mechanical properties and durability characteristics than the conventional asphalt mix.

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Section: Introductionmentioning

confidence: 99%

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Hou

Huang

2015

International Journal of Pavement Engineering

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“…e ideal regeneration of aging asphalt should be the synchronized recovery both the balance recovery in components proportion and the stability recovery in the colloidal structure of aging asphalt, requiring the recovery not only in quantity (components) but also in quality (colloidal structure) [7]. From analysis on the mechanism of modification technology, the modified agent in modification technology can bind the molecular particles in regenerating asphalt [8,9], so that the macromolecules (such as asphaltene) in regenerating asphalt can be recovered better. Meanwhile, the modification technology can meet the requirement on the recovery of the colloidal structure.…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical Behavior of Aging Asphalt Based on Composite Regeneration and Modification

Wang

Liu

Sun

2020

Advances in Materials Science and Engineering

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Although the aging asphalt and its regeneration were researched by many researchers, the poor low-temperature performance of regenerating asphalt has still not been solved yet. In this project, the composite technology of regeneration and modification will be used to solve the problem mentioned above. rough the investigation and analysis on the composite mechanism of regeneration and modification for aging asphalt, the objective of the project attempts to explore a method for the synchronized recovery of high-and low-temperature performance of aging asphalt. e research results show that the single regenerating technology cannot fully recover the low-temperature performance of aging asphalt, and the composite technology of regeneration and modification can make the performance of aging asphalt recovery well. e indexes of aging asphalt after composite regeneration and modification have been recovered, which are better than the indexes of 90# asphalt (25°C penetration is 80-100/ 0.1 mm) and close with the indexes of styrene-butadiene-styrene (SBS) modified asphalt. e project has demonstrated that the composite technology of regeneration and modification can make the high-and low-temperature performance of aging asphalt recovery well. e research results can obtain better economic and social benefits.

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“…The properties (aggregate gradation and volumetric quantities) of the mixture, the rate of loading and environmental conditions are the most important factors that affect the dynamic modulus (|E * |) (Zaciada et al 2014). The main objective of this study is to develop a rational approach to investigating and simulating the effect of air voids and asphalt content on |E * | master curves and consequently predict pavement performance.…”

Section: Introductionmentioning

confidence: 99%

Technological and Economic Design of Asphalt Mixture Composition Based on Optimization Methods

Sivilevičius

Vislavičius

Bražiūnas

2017

Technological and Economic Development of Economy

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The asphalt pavement made of high quality materials and having the optimal composition best resists destructive effects of environmental factors and vehicles. The optimal content of the mineral materials of the asphalt mixture and a bituminous binder is selected employing calculation and experimental methods. The properties of the designed asphalt mixture must meet the requirements of technical specifications thus reducing its cost. The paper presents algorithms for simulating the composition of the asphalt mixture applying mathematical programming techniques. The algorithms allow designing the asphalt mixture with minimal bitumen content, a low cost of the mineral part and the densest gradation assessing technological requirements for producing the mixture. Optimal bitumen content is calculated considering bitumen capacities specified for different types of rock and determined employing the most recent standard sieves screening for narrow fractions. For verifying the new proposed algorithms, a numerical experiment on the materials most commonly used in asphalt mixing plants was done. The analysis of findings indicates that the application of the algorithms assist in comparing real results.

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Improved method of considering air void and asphalt content changes on long-term performance of asphalt concrete pavements

Cited by 21 publications

References 5 publications

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Study on Mechanical Behavior of Aging Asphalt Based on Composite Regeneration and Modification

Technological and Economic Design of Asphalt Mixture Composition Based on Optimization Methods

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