This study was performed to investigate the effect of amount of pozzolan added to asphalt cement on the properties of, both, asphalt-pozzolan binder and binder concrete mixture. In order to evaluate the effect of pozzolan on binder properties, asphalt pozzolan binders have been prepared at different pozzolan content (zero, two, four, six and eight percent by weight of binder) and evaluated in terms of binder specific gravity, flash point, softening point, and penetration. To evaluate the effect of pozzolan content on the properties of bituminous mixtures, Marshall specimens have been prepared at pozzolan content of zero, two, four, six and eight by weight of binder. The effect of pozzolan on the behaviour of these specimens were evaluated in terms of optimum asphalt content, rutting resistance (stability), unit weight, air voids, voids in mineral aggregate, and stripping resistance. These properties were evaluated for mixes with different types of aggregates (limestone and Wadi gravel).
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