In ________ test, the workability of concrete is measured in the terms of internal energy required to compact the concrete fully.(a) Compaction factor test(b) Vee-bee test(c) Rotating table test(d) Slump cone testI have been asked this question during an interview.My doubt is from Cement Concrete Construction in division Cement Concrete Construction of Construction & Building Materials

In ________ test, the workability of concrete is measured in the terms

1.	In ________ test, the workability of concrete is measured in the terms of internal energy required to compact the concrete fully.(a) Compaction factor test(b) Vee-bee test(c) Rotating table test(d) Slump cone testI have been asked this question during an interview.My doubt is from Cement Concrete Construction in division Cement Concrete Construction of Construction & Building Materials
Answer» The correct OPTION is (a) Compaction factor test To explain I would say: In Compaction factor test, the concrete is allowed to fall in a lower CYLINDRICAL mould of 150 mm diameter and 300 mm height through into VERTICAL placed conical Hopper. The SURPLUS concrete appearing about the top of the mould is removed with a trowel. The weight of concrete in the mould is then found out.

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