Objective Appraisal of Stripping of Asphalt from Aggregate

AB Brown; JW Sparks; GE Marsh

doi:10.1520/STP39330S

SYMPOSIA PAPER Published: 01 January 1959

STP39330S

Objective Appraisal of Stripping of Asphalt from Aggregate

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Aggregate used in road construction is hydrophilic, which means that rock is preferentially wetted by water rather than by asphalt. At any break in an asphalt coating of a rock particle when water is present, the surface-tension forces work to disengage asphalt from aggregate and to contract asphalt films into islands lying on rather than adhering to the rock surfaces. The rate of such stripping tends to be reduced as the asphalt's viscosity is increased and as the asphalt's content of antistripping agent is increased, either naturally or by inclusion as an additive.

Author Information

Brown, AB

Standard Oil Co. (Indiana), Whiting, Ind.

Sparks, JW

Standard Oil Co. (Indiana), Whiting, Ind.

Marsh, GE

Standard Oil Co. (Indiana), Whiting, Ind.

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Details

Developed by Committee: D04

Pages: 59–83

DOI: 10.1520/STP39330S

ISBN-EB: 978-0-8031-5618-0

ISBN-13: 978-0-8031-5617-3

Objective Appraisal of Stripping of Asphalt from Aggregate

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