Abstract
Railway ballasts are broken pieces of hard rock within the grain size range of 25mm - 60mm,
over which the railway tracks are laid. Quarries in dolerite, greywake, shale, pebbles and
granitic rock formations are some of the major sources of large stones that may be selected as
railway ballast based on a range of properties. Flakiness index, Roundness, sphericity and
shape factor, and Los Angeles Abrasion indices of samples of the five rock types were
determined...