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Re: Placing Concrete in Vault[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Placing Concrete in Vault
- From: <Parkerres(--nospam--at)aol.com>
- Date: Wed, 15 Jul 1998 03:48:16 EDT
In a message dated 98-07-15 03:07:19 EDT, you write: << Well but wouldn't the 4" slump lead to voids and seggregation in such a heavily reinforced section, especially in the walls ? I'm hoping that by using the superplasticizer to increase the slump to 6 to 7" without increasing the water cement ratio, the potential for shrinkage and thus cracking is not increased. >> This is a matter of semantics. Typically we specify (and measure) the slump (4") prior to adding the superplasticizer. I' m fairly sure this is standard procedure. Once the superplasticizer is added the slump may go to 8" to 10". Bruce Resnick, SE Parker Resnick Str. Eng.
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