The Best Different Grades of Concrete And Their Usage Reviewed
What is Grade of Concrete
Grade of Concrete is a combination of Portland Cement, water, coarse and fine aggregates. It merges into a hard mass because of chemical reaction called hydration between cement and water. For creating concrete, we use cement, sand aggregate and water which are mixed with a certain ratio and concrete is cast and put in a cube of 150 mm size and put in a water bath for 28 days and later it undergoes a compression test. The compressive test result is known as the Grade of Concrete. In the designation of the concrete mix, the letter M refers to the mix and the number is the specified characteristic strength of 150 mm work cubes at 28 days, expressed in MPa (N/mm²).
In this article we are going to have a detailed understanding about concrete technology and minutely analyse the properties of concrete and its practical application in the construction industry. Though cement plays an important part in making concrete, it serves as an essential element. Cement serves as a glue that keeps everything together. There are five different types of cement depending on what kind of concrete the construction project needs.
- Type I is used for most residential work
- Type II is used in moderate sulphate conditions
- Type III is used in climates where freezing is a risk
- Type IV is used for special orders like industrial placements
- Type V is used in extreme sulphate conditions