QUESTION 1
a) Describe any three properties of Mortars
b) Each combination of coarse and fine aggregates has a specific water demand for a given mix fluidity or slump. What are the two general guidelines?
c) Explain what are Polymer Concretes?
QUESTION 2
a) Comment on the Effects of Hygroscopic Properties of Wood
b) Give a brief description of the following terms-
- Ductility
- Residual Stresses
- Strain Rate
- Toughness
c) From the standpoint of building and their principal effects, explain the importance of the following alloying elements
- Aluminium
- Copper
- Titanium