an55%naturalsandandatleast45%crushedsand.b)Thebaseandsubbaseshouldensuregoodstabilityandevenness,accordingtobestroadconstructionpractice.c)Thechippingsshouldbecrushed(100%crushedfaces)andofamaterialwithahighresistancetocrushing.d)Thechippingsusedinthemixshouldbewashed.e)Noextrachippingsshouldbeaddedontothesurface.f)Thebinderhardness,expressedasthePENvalue,shouldbe40to60,onditions.Theruleisthatashardabinderaspossibleshouldbeused,monpractice.g)Thetemperatureofthemixbeforerollingshouldbechosensoastoachievebysubsequentrollingtherequiredvoidscontent.InordertoincreasetheprobabilityofsatisfyingthespecificationsofAA3.1-AA3.4,pactnessshouldbestudiednotonlybyanappropriatechoiceofmixingtemperature,pactingvehicle.FigureAA1GradingcurveoftheaggregateintheasphaltmixwithtoleranceTableAA1Designguidelines10
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