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During the process of hydration of cement, due to increase in Dicalcium Silicate (C2S) content in cement clinker, the heat of hydration
- a)Does not change
- b)Decreases
- c)Initially decreases and then increases
- d)Increases
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
During the process of hydration of cement, due to increase in Dicalciu...
Explanation:
The hydration process of cement involves a series of chemical reactions between water and the various compounds present in cement clinker. One of the main compounds present in cement clinker is Dicalcium Silicate (C2S).
Heat of Hydration:
The heat of hydration refers to the heat released during the chemical reactions between cement and water, and it is an important parameter in the cement hydration process. The heat of hydration is influenced by various factors, including the composition of the cement clinker.
Increase in Dicalcium Silicate (C2S) Content:
When there is an increase in the Dicalcium Silicate (C2S) content in cement clinker, it affects the heat of hydration. Here's why:
1. C2S is one of the main components responsible for the early strength development of cement. It reacts relatively slowly compared to other cement compounds, such as Tricalcium Silicate (C3S).
2. During the hydration process, C2S reacts with water to form Calcium Silicate Hydrate (C-S-H) gel, which contributes to the strength and durability of the cement.
3. The reaction between C2S and water is exothermic, meaning it releases heat. However, the heat released during the hydration of C2S is relatively lower compared to the heat released during the hydration of C3S.
Effect on Heat of Hydration:
Due to the slower reaction rate and lower heat release of C2S compared to C3S, an increase in the C2S content in cement clinker leads to a decrease in the overall heat of hydration. This is because a larger proportion of the cement clinker is composed of C2S, which contributes less heat during the hydration process.
Conclusion:
In conclusion, the increase in Dicalcium Silicate (C2S) content in cement clinker leads to a decrease in the heat of hydration. This is due to the slower reaction rate and lower heat release of C2S compared to other cement compounds.
The hydration process of cement involves a series of chemical reactions between water and the various compounds present in cement clinker. One of the main compounds present in cement clinker is Dicalcium Silicate (C2S).
Heat of Hydration:
The heat of hydration refers to the heat released during the chemical reactions between cement and water, and it is an important parameter in the cement hydration process. The heat of hydration is influenced by various factors, including the composition of the cement clinker.
Increase in Dicalcium Silicate (C2S) Content:
When there is an increase in the Dicalcium Silicate (C2S) content in cement clinker, it affects the heat of hydration. Here's why:
1. C2S is one of the main components responsible for the early strength development of cement. It reacts relatively slowly compared to other cement compounds, such as Tricalcium Silicate (C3S).
2. During the hydration process, C2S reacts with water to form Calcium Silicate Hydrate (C-S-H) gel, which contributes to the strength and durability of the cement.
3. The reaction between C2S and water is exothermic, meaning it releases heat. However, the heat released during the hydration of C2S is relatively lower compared to the heat released during the hydration of C3S.
Effect on Heat of Hydration:
Due to the slower reaction rate and lower heat release of C2S compared to C3S, an increase in the C2S content in cement clinker leads to a decrease in the overall heat of hydration. This is because a larger proportion of the cement clinker is composed of C2S, which contributes less heat during the hydration process.
Conclusion:
In conclusion, the increase in Dicalcium Silicate (C2S) content in cement clinker leads to a decrease in the heat of hydration. This is due to the slower reaction rate and lower heat release of C2S compared to other cement compounds.
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During the process of hydration of cement, due to increase in Dicalcium Silicate (C2S) content in cement clinker, the heat of hydrationa)Does not changeb)Decreasesc)Initially decreases and then increasesd)IncreasesCorrect answer is option 'B'. Can you explain this answer?
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