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Strength of concrete ?

Strength of concrete

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Question added by Muhammad Aasim Jan , Construction Manager , SKB
Date Posted: 2014/05/11
ahmed siddiqui
by ahmed siddiqui , Civil Engineer , OMRANIA & ASSOCIATES

The strength obtained after keeping the concrete sample in water for28 days.

It may varies according to the concrete mix design.

Appi Reddy Kothapally
by Appi Reddy Kothapally , Chief Structural Consultant , self employed

Without lateral thinking the compressive strength of concrete tested in a laboratory is called strength of concrete. We consider compressive strength in the structural design. Due to pozzolanic activity, the56 days strength (some times)  more than1.5 to1.6 times the28 days strength. In near future, the columns, dams, mass concrete works, may define to use56 days strength in the design of structures. In one of the developed country's code,56 days can be used in the design of RCC members.

Wolf Klaas Kinsbergen
by Wolf Klaas Kinsbergen , Managing Director, Designer , ingenieursbureau KB International NV

depends on the mixture, what strength do you want? in which environment? do you need it to strengthen quicker then normal?

Also concrete needs the expertise and design. All concrete mixtures are different depending on there duty en scope. Ask the responsible structural engineer, also it has to be on the shop drawings!

mitchell goosen
by mitchell goosen , senior civil/construction supervisor , Ausenco Services

Strength of concrete is controlled by the batching methods according to specs.

Ray Salvador
by Ray Salvador , PROJECT MANAGER/CONSULTANT , R & S CONSTRUCTION LTD.

water : cement ratio. I am present in school about this topic

Mohammad Nemati
by Mohammad Nemati , manager , kuathar bana joonub

concrete strenth is in fact  the maximum compression stress of concrete after7,11, or28 days after curing in lab conditions.

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