Determine the specific gravity of combined aggregate in a bituminous mix having maximum theoretical specific gravity of 2.4. The bitumen content is 8% by weight of the mix and its specific gravity is 1.00.
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- Given four different types of aggregates to be used to produce a blended aggregate for use in the manufacture of asphaltic concrete, determine the bulk specific gravity of the aggregate mix.A compacted asphalt concrete specimen has the following propertiesAsphalt Content = 5% by total weight of the mixBulk specific gravity of the mix = 2.485Theoretical maximum specific gravity = 2.595Bulk specific gravity of the aggregate = 2.715Absorption = 1.5%Compute the percent's VTM, VMA, and VFABased on the data shown in Table select the blend for a Superpave design aggregate structure. Assume 60.3 million ESAL and 19 mm nominal maximum aggregate size.
- What is the weight of fine aggregates in kilograms needed for the design mix? Use three decimal places in the computation of volumes Use two decimal places for the computed weight of fine aggregatesDesign a Mix for the following Data. Specified strength = (99.5) MPa, Required Slump = 80 mmMaximum size of aggregate = 25 mm, FM of fine aggregate = 2.40Grading of aggregate as satisfied by ASTM C33 (American Society for Testing and Materials)SSD specific gravity of fine and coarse aggregate = 2.75Rodded bulk density of coarse aggregate = 1600 kg/cubic mAbsorption Capacity of coarse aggregate = 0.9 %Absorption Capacity of fine aggregate = 0.5 %Moisture Content of fine and coarse aggregate = 2 %Exposure Conditions = NormalBased on the data in Table P9.32, determine the design binder content for aSuperpave mix design for a 15 million ESAL. Assume a 12.5 mm nominalmaximum aggregate size.
- coarse aggregate with a nominal maximum size of 2 inches and dry rodded density of 110 lb/ft3 will be used in a trial mix design. determine the coarse aggregate content in pounds per cubic yard required if the fine aggregate fineness modulus is 2.50.Given the data in Table P9.33, select the blend and the design binder contentfor a Superpave design aggregate structure for a 5 million ESAL and a 19 mmnominal maximum aggregate size.Define the following terms:a. Saturated surface-dry condition of aggregatesb. Absorption of aggregatesc. Free water on aggregatesd. Referring to Figure , which portion of the water in the aggregate reacts with the cement in the PCC mix?
- An aggregate blend is composed of 59% coarse aggregate by weight (Sp. Gr.2.635), 36% fine aggregate (Sp. Gr. 2.710), and 5% filler (Sp. Gr. 2.748). Thecompacted specimen contains 6% asphalt binder (Sp. Gr. 1.088) by weight oftotal mix and has a bulk density of 2305 kg/m3 . Ignoring absorption, computethe percent voids in total mix, percent voids in mineral aggregate, and thepercent voids filled with asphalt.The mix design for an asphalt concrete mixture requires 2 to 6% minus No.200. The three aggregates shown in Table are available.Considering that approximately equal amounts of coarse and intermediateaggregate will be used in the mix, what is the percentage of fine aggregate that will give a resulting minus No. 200 in the mixture in the middle of the range,about 4%?Laboratory specific gravity and absorption tests are run on two coarse aggregate sizes, which have to be blended. The results are as follows:Aggregate A: Bulk specific gravity = 2.491; absorption = 0.8,Aggregate B: Bulk specific gravity = 2.773; absorption = 4.6,a. What is the specific gravity of a mixture of 60% aggregate A and 40% aggregate B by weight?b. What is the absorption of the mixture?