y we need to take 28 days strength as compressive
strength ? y cant we take 30 th day

Answer Posted / ravi

In 28 days, concrete will gain its complete strength. After 28 days, you can take the strength on any day. You will get the same result. We need the results as early as possible. 28 days the minimum time it takes for the concrete to gain its complete strength. So, we take 28 day strength.

Is This Answer Correct ?    44 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Soil bearing capacity formula

1221


if dia of inner circle is 42 m and depth is 1.5 m and width is 1 m ,then whait is the quantity of steel?

2382


relation bet Coefficient consolidation Cv, time factor Tv, drainage path d, & time t is Cv=d2Tv/t Cv=d2t/Tv Cv=tTv/d2 Cv=Tv/td2

2391


How to find CN by using arcgis 9.3?

1880


What are the different theories of failure under static load?

725






what motivates you to do a good job

2416


What is the tensile strength of wood?

657


what is modular brick and it size

1167


how meny typs of renging rod?

1790


how to check and keep control on the wastage of material at site

1857


what is the productivity in aluminium shuttering per day

1573


If we don't have drawing for Excavation of building,At what rule we will go for excavation and how much depth will go for a villa?

1260


Reinforcement details at hinged joint

2689


what is the ingredient value of 40mm and 20mm aggregates?

1553


what is the code provision for acceptance of fineness modulus range for fine aggregates in design mix

4511