Cement Hardening Rate Explained
The hardening process of cement, which involves chemical reactions called hydration, is not uniform over time. It follows a specific pattern regarding the rate of strength development.
Initial Hydration and Strength Gain
During the initial stages, typically the first few days after mixing with water, the hydration reactions in cement are highly vigorous. This leads to a rapid rate of hardening and significant early strength gain.
Later Stages of Hardening
As time progresses beyond the initial few days, the hydration process continues, but at a progressively slower pace. The cement continues to gain strength, but the rate decreases significantly compared to the early period. This slow gain continues over weeks, months, and even years.
Conclusion
Therefore, cement hardening occurs at a rapid rate during the first few days and afterwards continues to increase at a decreased rate. This matches option 1.
Important Questions from Concrete
The separation of the constituent materials of concrete is known as:
Creep which is a strain due to loading with no loss of moisture?
The reduction in the strength of cores can be as high as ______ for 40 MPa concrete.
A good method of maintaining a satisfactory state of wetness in a body of concrete to promote continuous hydration when original water/cement ratio used is NOT less than 0.5 is known as:
For keeping concrete wet to enable it to attain full strength is known as
