Question

What is the Vee-Bee time for medium degree of workability?

(a) 10-20 sec

(b) 5-10 sec

(c) 2-5 sec

(d) 35 sec

This question was addressed to me by my college professor while I was bunking the class.

My doubt is from Measurement of Workability in portion Fresh Concrete of Concrete Technology

Answer 1

Right answer is (c) 2-5 sec

To explain I would say: 2-5 sec is the Vee-Bee time for the medium degree of workability and 10-20 sec is for very low.