Civil Engineering site Tips :-

For a successful Engineer you have to know some  factors, Which is very important for a Site Engineer.

Grade of concrete

There are different types concrete grades are  use on site such as -

• M5 - 1 : 5 : 10  { where m-mix ,  5- grades  &  three factors are (1,5,10) are aggrigates}
• M7/5 - 1 : 4 : 8
• M10 - 1 : 3 : 6
• M15 - 1 : 2 : 4



Grade of concrete ad mixture

• M20 - 1 : 1.5 : 3

standard grades of concrete 

• M25 - 1 : 1 : 2
• M30 - design mix
• M35 - design mix
• M40 - design mix
• M45 - design mix

High grade of concrete 

• M50 - design mix
• M55 - design mix
• M60 - design mix
• M65 - design mix
• M70 - design mix

what is Design mix ? if  you are notice! 

There are two types of mix is use in concrete grade .

1. Nominal mix
2. Design mix

1. Nominal mix :- This is a ratio of cement, sand, aggrigate mix in, which it's quanty of ratio is fix. It start from M5 - M20 grade.
2. Design Mix :- This is the ratio of cement , sand & aggrigate in , which it's quantity of ratio is not fixed & this mix is make on laboratory.it start from M25-M70. & this grade  is use for given high strength to structure.    

       Now Let's Talk About Setting Time of concrete-

Setting time of cement is calculated by standard Vicat Aapparatus.

• Initial setting time of cement concrete should not be less than 30 minutes.
• Final setting time should not be greater than 10 hours.

Required Curing Days

What is the meaning of Curing ?

• Curing is the process of maintaining heat of hydration in cement is called Curing.
• It's simple meaning after concrete casting we applied water on that place this is called Curing.



Curing of concrete

• To give the concrete good strength we do this curing process.

Different types of cements & it's Curing Days -

1. Super Sulfate Cement :- 7 days.
2. Ordinary portland Cement :- 10 days.
3. Cement with minerals & admixtures :- 14 days.