Use of the micro-deval test for assessing Alaska aggregates : [summary].

PDFBriefFHWA-AK-RD-12-22INE/AUTC 12.14DTRT06-G-0011AUTC 410009T2-10-08Frigid regionsAggregatesAggregate gradationFreeze thaw durabilityDegradation failuresPavement performancePavement distressField testsAlaskaAlaska. Dept. of Transportation and Public FacilitiesLiu, JuanyuMullin, AnthonyRein, JasonAlaska University Transportation CenterAlaska. Dept. of Transportation. Research, Development, and Technology TransferUnited States. Federal Highway AdministrationUS Transportation CollectionChoosing the right material is half the battle in building roads for Alaska. The extreme conditions typical to cold regions require adurable, abrasion resistant and freeze-thaw resistant aggregate. Recently the state has been wondering exactly how effective andaccurate its selection methods are. Currently there is limited information regarding the Alaska Testing Method 313 (sometimes knownas the Washington degradation test) used by ADOT&PF to test abrasion and degradation value. This project will examine a new testingmethod, the Micro-Deval test \ue2\u20ac\u201d a wet test of how aggregates degrade when tumbling in a rotating steel drum with water and steel balls\ue2\u20ac\u201d to determine whether it can provide safe and cost-effective aggregate testing with reproducible results that correlate with fieldperformance. The Micro-Deval test is easy, safe, and less costly to perform than traditional testing methods. It is suitable for smallerequipment, requires smaller sample quantities and uses a simple procedure. This study will provide data and recommendations on thesuitability of theMicro-Deval test as a as a rapid, simple, repeatable and inexpensive technique for assessing the durability of Alaska aggregates