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Daily Digest Mon Feb 23 23:00:02 2004

 
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rags99
SEFI Member
SEFI Member


Joined: 26 Jan 2003
Posts: 5

PostPosted: Mon Feb 23, 2004 5:45 pm    Post subject: Daily Digest Mon Feb 23 23:00:02 2004 Reply with quote

Only the slump test should never be considered for rejecting
a batch/truckload of concrete mix.
Slump is more a measure of concrete workability in the
field. If at arrival the first slump test results in a more
than accepectable slump, u usually let it mix for a few more
minutes and then carry out another slump test. By adding
admixtures and water we can arrive at an accepectable slump
at field.
But the duration of the concrete mix , is a more appropriate
consideration for rejection. If the concert mix has been in
transit for more than 60 minutes(?), it may be questionable
to be used for the job.
also a measure/check of WC for every batch of mix is
advisable.
raghu


-----------
: What are the tests to be carried out at site on the fresh
concrete from RMC
: truck, especially after a long haul? Is slump test
sufficient?
:
: Regards
: S.P.Srinivasan
:
:

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