compressive strength of concrete m35

What is the required compressive strength of grade 35

As per the experience and standard codes 7 days strength is about about 67% of the characteristic compressive strength obtained at 28 days. So for 35 Grade concrete its about

Its about 60% of its 28 day strength which is about 21. See attached image. Its not an exact figure, but around 55 to 62 percent.6As per the experience and standard codes 7 days strength is about about 67% of the characteristic compressive strength obtained at 28 days. So for3The required comprehensive strength for 35 Grade concrete at 7 days : It can be varied in different conditions.but as per the standard the required4A2A I would concur with other answers. These answers are very good and answer the question. Unless you believe they have not answered the question0Ok. It is also called characteristic compressive strength. It is purely depends on GRADE of CONCRETE. And also some factors like size of specimen,1It's probably more important for you to know how stupid a question this is. You do realize of course that you are a frigging moran.1It may depend on the assumptions made by the designer and the critical nature of the structure. ACI 301 1.6.6 states that The strength of concrete1Good question. Remember : 1. The 28th day strength is also known as the characteristics strength 2. In the grade of concrete, the 28th day strength22This is 65% of the characteristics strength. In case of M20, 7th day strength shall be : 20*0.65=13 N/Sqmm. Got it now? Thank you for the A2A Best26The strength of concrete at 7 days is only 60–65% of design strength depending on external conditions. Concrete gain its strength with time after c25