2. a Sample of Fine Aggregate Has the Following Properties

MSE 220 Worksheet Name

1. What is the maximum load a ¾” diameter bar of Grade 50 rebar can withstand before yielding?

2. A sample of fine aggregate has the following properties:

Wet mass = 521.0 g

Dry mass = 491.6 g

Absorption = 2.5%

Determine (a) total moisture content and (b) free moisture content

3. The mix design for an asphalt concrete mixture requires 2 to 6 percent minus No. 200. The following three aggregates are available:

% minus No. 200

Coarse 0.5%

Intermediate 1.5%

Fine 11.5%

Considering that approximately equal amounts of coarse and intermediate aggregate 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%?

4. State 5 types of concrete admixtures and discuss their applications.