Required CA 55.05 lb

Required CA 53.05 lb

Required water 8.23 lb

Required water 8.74 lb

Required water 7.23 lb

Question 6 (4 points)

Find the weight and volume of fine aggregates to produce a workable

mix of 1 yd³.

Given that the weights of water, cement, coarse aggregates are 340,

650, 1825 lbs, respectively. The air void is 2%. The specific gravities of

cement, fine aggregate, coarse aggregate are 3.15, 2.65 and 2.68,

respectively.

Question 6 options:

1122.79 lb and 6.79 ft^3

1112.79 lb and 4.79 ft^3

1212.79 lb and 6.79 ft^3

1121.79 lb and 6.79 ft^3

Question 7 (4 points)

To find the weight of water needed to mix materials shown in the Table

below to produce a PPC with a target w/c = 0.52. (10 points)

Weight (lb.) Moisture content

(%)

Materials mixed

Water

Cement

Wet coarse Aggregate

Wet fine Aggregate

Question 7 options:

8.27 lb

?

16

41

16

1.6

1.6

Absorption (%)

0.9

0.4