Samples of coarse aggregate from a stockpile are brought to the laboratory for determination of specific gravities. The following weights are found: Mass of moist aggregate sample as brought to the laboratory: 5,298 g Mass of oven dried aggregate: 5,216 g Mass of aggregates submerged in water: 3,295 g Mass of SSD (Saturated Surface Dry) Aggregate: 5,227 gFind The aggregate bulk dry specific gravity The aggregate apparent specific gravity The moisture content of stockpile aggregate (report as a percent) Absorption (report as percent)

a) The aggregate bulk dry specific gravity is 2.7

b) The aggregate apparent specific gravity is 2.72

c) The moisture content of stockpile aggregate is 1.6%

d) The absorption is 0.21%

Explanation:

Be:

Aggregate bulk dry specific gravity = z

Mass of the oven dried aggregate = x

Mass of the saturated surface dry aggregates = y

Submerged mass of aggregate = n

Aggregate apparent specific gravity = m

Weight of moist aggregate = p

a) The aggregate bulk dry specific gravity is equal to:

b) The aggregate apparent specific gravity is:

c) The moisture content of stockpile aggregate is:

%

d) The absorption is:

%

explanation:

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