What is your recommendation for the maximum size of coarse aggregate for the following situation? A continuously reinforced concrete pavement cross section contains a layer of No. 6 reinforcing bars at 6-inch centers, such that the steel is just above mid-depth of a 10-inch thick slab. Cover over the top of the steel is therefore about 4 inches.

Question 1 (1 point) Saved The minimum concrete strength for a side curb on the street in Hamilton, should be 30MPA 25 MPa 32MPA 40MPA Question 2 (1 point) Saved The bulk density is the ratio of the mass of the aggregate to an equalabsolute volume of water True False Question 3 (1 point) Saved Angular aggregate will decrease the void's volume True False Question 4 (1 point) Saved The bulk density of the aggregate includes the voids True False Question 5 (1 point) Saved The nominal size of the aggregate is acceptable if it is equal to 1/3 of the width of the form work the steel bar diameter the concrete cover in normal environment the clear spacing between the steel bars

@ (i) Concrete is used in a variety of applications from high-rise constructions to road pavements, bridges and floor slabs. Engineers will specify the strength of concrete mixes needed for each specific application. Compressive stress testing is carried out on test samples from concrete batches for purposes of quality control. In the space provided, sketch and label the fracture pattern of the concrete test piece after a compressive test. musgaib edt nodig Stansi VOR beforomo of bebe si giordinien fest2 quintetoeditedal budala wold Talno banoqquz odlo dianorte sliznat big or hobson axed loota 4300 GAOI (0)

Correctly define which of the stress versus strain graphs represent the comparison of 8 ksi and 4 ksi concrete for the chart below (say left or right). Qualitatively compare the w/c ratio, elastic modulus, and brittleness. 0.000 0.003 0.000 0.003 Sean, e Sane Feure 2 Strss vesus Srain curves Feure 2. Stress vasus rain curve