Determination of Consistency of Fresh Concrete – Vee Bee Test 60

Construction

The Vee Bee test is valid for true slump. This type of concrete shape obtained from slump test is vibrated in a cylindrical container till the slumped shape gets converted to a cylindrical shape (change of shape from frustum of cone to a cylindrical shape – mobility of concrete or remoulding time).
The time taken in shape changes in seconds is measure of consistency of concrete.

Read more >

Test for Abrasion of Coarse Aggregates Using Los Angeles Machine 52

Construction

In Los Angeles test for finding abrasion value of the aggregates, the aggregates and abrasive charge are placed together in a drum. The drum is rotated to 500 revolution or 1000 revolution depending upon the gradings of aggregate.
The fines generated during this action after passed through 1.72 mm sieve. The amounts passing through is used for getting an inference about the abrasion value and the use of the aggregates.

Read more >