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Posted: Thu Dec 23, 2004 4:51 am Post subject: Daily Digest Wed Dec 22 23:00:02 2004
Dear SEFIANS This has reference to the questions posed by Mr. Singh for "budding engineers" and the subsequent rplied Mr. James et. al. Divergent answers can be expected from even experienced engineers. There is a mention in the question that the concrete is of grade M30/M40 and that the slump "specified' is 125mm +/- 25mm. If an upper limit on slump was specified it might not be without reason. If the mix is not cohesive enough, higher slump might cause segregation or bleeding or both. If higher slump is due to excessive water then strength will also be less. So, if site engineer is to strictly follow the specifications he has to reject the truck. The engineer might be held responsible for NOT following specifications and the consequent problems that might arise. Since the RMC people are paid for sticking to specifications, there is no need to follow the practice of "thoda adjust karo"!
Merry Christmas to all in advance!
regards Dr. M. R. Kalgal General Manager - Tech. BBR(India) Ltd.
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