Moisture Damage Cutoff Ratio Specifications for Asphalt Concrete

RP Lottman, S Brejc - Transportation Research Record, 1990 - trid.trb.org
Moisture susceptibility of asphalt concrete (AC) mixtures is identified by performing
laboratory tests on dry-and wet-accelerated conditioned specimens. Excessive moisture
susceptibility is associated with low ratios of wet-to-dry mechanical properties. Highway
agencies use values of cutoff wet-to-dry ratios for resilient modulus and for indirect tensile
strength as specifications. Mixtures having wet-to-dry ratios lower than the cutoff ratios have
excessive moisture susceptibility and require treatment before paving. Currently, most …

[ZITATION][C] Practical Evaluation of Moisture Damage Cutoff Specifications for Asphalt Concrete

RP Lottman, S Brejc - 1990 - trid.trb.org
This paper presents an application of the University of Idaho Asphalt Concrete Moisture
Damage Analysis System program on field performance prediction to (1) classify asphalt
concrete mixture moisture susceptibility,(2) predict cutoff ratios,(3) compare predicted cutoff
ratios to currently used ratios, and (4) apply the practical aspects of the results.

Practical evaluation of moisture-damage-cutoff specifications for asphalt concrete. Final report

RP Lottman, S Brejc - 1990 - osti.gov
The paper presents an application of the University of Idaho ACMODAS (Asphalt Concrete
Moisture Damage Analysis System) program on field performance prediction to (1) classify
asphalt concrete mixture moisture susceptibility,(2) predict cutoff ratios,(3) compare
predicted cutoff ratios to currently used ratios, and (4) apply the practical aspects of the
results. Separate cutoff ratios are required for fatigue cracking (MrR-CO and TSR-CO) and
for wheelpath rutting (MrR-CO). Results indicate higher than currently used cutoff ratios are …