Question

Workability of concrete can be improved by ___________

(a) Increasing size of aggregates

(b) Decreasing size of aggregates

(c) Increasing fine aggregates

(d) Increasing flaky aggregates

The question was posed to me by my college director while I was bunking the class.

Question is taken from Workability of Fresh Concrete topic in division Fresh Concrete of Concrete Technology

Answer 1

The correct answer is:

(c) Increasing fine aggregates

Increasing the proportion of fine aggregates (like sand) in the concrete mix improves workability by making the mix smoother and easier to place and compact.