Civil and Environmental Engineering Answers

Define the fineness modulus of aggregate. What is it used for?

The following laboratory tests are performed on aggregate samples:

a) Specific gravity and absorption

b) Soundness

c) Sieve analysis test

What is the significance and use of each of these tests?

Define the following terms:

a) Saturated Surface-Dry (SSD) conditions of aggregates

b) Absorption of aggregates

c) Free water on aggregates

Discuss 5 different desirable characteristics of aggregate of aggregate used in Portland cement concrete.

What are the three mineralogical or geological classifications of rocks, and how are they formed?

A continuous cable (diameter 6 mm) with tension force T is attached to a horizontal frame member at B and C to support a sign structure, Fig. 1. The cable passes over a small pulley at D. The wire is made of a copper alloy, and the stress-strain relationship for the wire is (a) Find the axial normal strain in the cable and its elongation due to the load W = 6.8 kN (b) If the forces are removed, what is the permanent set of the cable. Hint: Start with constructing the stress-strain diagram and determine the modulus of elasticity, E and the 0.2% offset yield stress

The open tank contains two different liquids as shown below. Determine the total pressure at elevation zero.

Two clean parallel glass plates, separated by a distance d = 1.5 mm, are dipped in a bath of water. How far does the water rise due to capillary action, if σ = 0.0730 N/m?

Benzene at 20°C has a viscosity of 0.000651 Pa-s. What shear. stress is required to deform this fluid at a strain rate of 4900 s-1?

Calculate the density, specific weight, and volume of chloride gas at 25 °C and pressure of 600 000 N/m2 absolute.