Various studies have shown that the properties of mineral fillers havernsignificant effect on the performance of asphalt concrete pavements.rnThis study was intended to investigate the effect of different types of mineralrnfillers in hot-mix-asphalt performance. The mineral fillers, with differentrnpercentages by total weight of the mixture, used in the study were crushedrnstone, volcanic-cinder, and limestone passing 0.075mm sieve.rnUsing the different types and contents of the mineral fillers, a number of trialrnmixes have been prepared using the Marshal Mix design procedure to arrivernat asphalt concrete mixtures that fulfill the Marshal criteria. The effects ofrneach mineral filler type on Marshal Properties of the asphalt mixtures atrntheir respective optimum asphalt content were evaluated and possible basisrnfor such difference in properties was discussed.rnUsing the different mineral fillers at their respective optimum asphaltrncontent, specimens were prepared to investigate moisture susceptibility ofrnasphalt mixtures. The Marshal Immersion test method was adopted torndetermine the moisture effect of mixtures.rnThe test results show that all mineral fillers do have an effect on variousrnmixture properties. Mixtures prepared with volcanic-cinder require higherrnasphalt content to fulfill all the Marshal requirements. This makes thesernmixtures more costly from practical point of view. Higher stability valuesrnwere however, obtained by mixes with volcanic-cinder as compared tornlimestone and crushed stone fillers. Moreover, higher retained stabilityrnvalues are obtained by mixes prepared with limestone and volcanicâ€“cinder asrncompared to the widely used crushed stone. The dynamic moduli values,rnestimated using the formula developed by the Asphalt Institute, were higherrnfor mixtures prepared with limestone fillers and crushed stone as comparedrnto volcanic-cinder at higher filler contents starting from 5% in the mixture.rnxrnFrom the study, similar trend of mixture properties, particularly Marshalrnproperties, were observed for mixes made with limestone and crushed stonernfillers as compared to that of volcanic-cinder. This indicates that limestonerncan be used as a substitute for the widely used crushed stone wherernavailable. This, of course, requires further investigation that better simulatesrnthe field condition. On the other hand, inconsistent mixture properties werernobserved from mixes made with volcanic-cinder. This also entails furtherrninvestigation if it is deemed to be used as filler materials in asphalt concrete.rnGenerally, different characteristics of bituminous mixtures were observed byrnvarying the fillers in the mixture by type and content. This indicates that,rnmineral fillers are recognized as an important ingredient in the mixturernproperty. From the test results obtained, there is a common trend inrnobtaining different mixture properties with varying filler content, whichrnshows, there exists optimum filler content that best mix performance couldrnbe achieved.rnThe results of this research work is hoped to be used as the basis for furtherrninvestigation on the effects of mineral fillers and improve asphalt concreternmixtures as well as find alternative materials.