Find the optimum binder content for the results of Marshall test bellow and determine theproperties of the optimum mix:Ac%Density (gm/cm³) %V.T.M %V.M.A Stability (N)Flow (mm)4.52.2226.013.581502.04.752.2825.51483502.45.02.3454.014.585002.85.252.3323.81579003.05.52.2933.51670004.5Specifications3---512---16Min. 80002---4

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Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter3: The Structure Of Real Materials

Section: Chapter Questions

Problem 3.12P

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•Sam, the strawberry producer, has had complaints from the produce company that his strawberries are damaged during transit. Sam would like to know the force required to damage the strawberries if they are stacked three deep in their container. •The damage occurs on the bottom layer at the interface with the parallel surface of the container and also at the point of contact between the layers of strawberries. •An hydrostatic bulk compression test on a sample of Sam's strawberries indicates an average bulk modulus of 225 psi. Testing of specimens from Sam's strawberry crop shows a compression modulus E of 200 psi. The average strawberry diameter is 1.25 inches and the axial deformation due to the damage in transit averages 0.23 inches. The modulus of elasticity for Sam's variety of strawberries is reported to be 130 psi. •Estimate the force Sam's strawberries may be encountering during transit. (Hertz method)
(i) A 10-mm-diameter Brinell hardness indenter produced an indentation 2.50 mm in diameter in a steel alloy when a load of 1000 kg was used. Compute the HB of this material. (ii) What will be the diameter of an indentation to yield a hardness of 300 HB when a 500-kg load is used?
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