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Joined: 17 Apr 2008 Posts: 1985 Location: NCR Faridabad, E mail email@example.com
Posted: Tue Dec 07, 2004 4:09 pm Post subject: Concrete querries
Your question is very broad. Shall u be able to provide more input about the concrete control adopted whether by weigh or volume measurement of ingredients involved
Whether lime stone or gabbro or igneous rock aggregate
Type of coarse sand
Any admixture included
Durability is a very complex issue for explanation. Only characteristic crushing strength cannot guarantee the durability. There are so many other factors involved
Your using higher levels of dissolved solids & turbidity in water may impact on the mix for the purpose of the strength but most important adverse impact is that same water used for immediate curing of 7 days
I am also concerned about a possible augmentation of inner chemical reaction within the hardened concrete as well as effect on the rebars
It is advised that please provide detailed information on the mix use & the circumstances under which poured & cured
Eng Suraj Singh PE
firstname.lastname@example.org wrote:By leaching do you mean efflorescence? If not, what is meant? What is the w/c? Strength requirements? How was the concrete/mortar mixed, delivered and placed? What is the environment in which the concrete is placed? How long did it take for the problem to arise?
James Cohen, PE James Cohen Consulting, PC http://expertpages.com/jccpc
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