Roberts et al. (1996) summarized the quality of engineering properties of HMA
mixtures using igneous, sedimentary, and metamorphic aggregates. They also stated that
the most important effect of aggregate mineralogy is its influence on adhesion and
damage caused by moisture. Asphalt cement normally tends to bond better to some
aggregates such as limestone than to siliceous ones such as gravels. Prowell et al. (2005)
stated that clay-like fine particles in the presence of water tend to produce mixtures prone
to damage caused by moisture because they coat the fine aggregates and prevent the
adherence of the asphalt to the aggregate surface.