Question

Which material property is shown by the 3rd figure?

(a) Concrete

(b) Earth

(c) Sound insulation

(d) Thermal insulation

This question was addressed to me in my homework.

My query is from Sections of Solids in section Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer 1

Correct answer is (a) Concrete

Explanation: Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. However, asphalt concrete, which is frequently used for road surfaces, is also a type of concrete, where the cement material is bitumen, and polymer concretes are sometimes used where the cementing material is a polymer.