What question did this study set out to answer?

To evaluate the performance-related physical and chemical effects of hydrated lime filler compared to calcium carbonate limestone filler on asphalt binders, mastics, and mixtures.

March 16, 2005Journal of Materials in Civil Engineering

Unique Effects of Hydrated Lime Filler on the Performance-Related Properties of Asphalt Cements: Physical and Chemical Interactions Revisited

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Authors

DLDallas N. LittleMitchell Institute JPJ C PetersenAsphalt Institute

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Implication

Laboratory evaluation demonstrates modified damage tolerance, healing, and plastic flow in asphalt mastics and mixtures with hydrated lime, highlighting crucial nanoscale chemical interactions.

Key Points

To evaluate the performance-related physical and chemical effects of hydrated lime filler compared to calcium carbonate limestone filler on asphalt binders, mastics, and mixtures.
Conducted rheological assessments on bitumen mastics across temperature ranges using dynamic shear rheometry, dynamic mechanical analysis, and bending beam rheometry.
Performed low-temperature elongation, fracture, and torsional fatigue tests on mastics.
Evaluated mixture-scale performance using fatigue and permanent deformation testing.
Hydrated lime significantly reduces the rate of microcrack-induced damage and enhances microdamage healing in both mastics and mixtures.
The filler markedly modifies plastic and viscoelastic flow behavior across low to high pavement service temperatures.
The extent of mechanical improvement varies substantially depending on the specific bitumen chemistry and micro- to nanoscale interactions.

Cite This Study

Little et al. (2005) studied this question.

synapsesocial.com/papers/6a005ecbe92f4a033c854486 https://doi.org/10.1061/(asce)0899-1561(2005)17:2(207)

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Implication

Laboratory evaluation demonstrates modified damage tolerance, healing, and plastic flow in asphalt mastics and mixtures with hydrated lime, highlighting crucial nanoscale chemical interactions.

Unique Effects of Hydrated Lime Filler on the Performance-Related Properties of Asphalt Cements: Physical and Chemical Interactions Revisited

Discussion

Member takes

Implication

Key Points

Cite This Study

Unique Effects of Hydrated Lime Filler on the Performance-Related Properties of Asphalt Cements: Physical and Chemical Interactions Revisited

Discussion

Member takes

Implication

Key Points

Cite This Study

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