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The main constituent of cement which is responsible for the initial setting of cement is
- a)Dicalcium silicate
- b)Tricalcium silicate
- c)Tricalcium aluminate
- d)All of the above
Correct answer is option 'C'. Can you explain this answer?
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The main constituent of cement which is responsible for the initial se...
The initial setting of Portland cement is due to tricalcium aluminate. Tricalcium silicate hydrates quickly and contributes more to the early strength. The contribution of dicalcium silicate takes place after 7 days and may continue for up to 1 year. Tricalcium aluminate hydrates quickly, and generates much heat and makes only a small contribution to the strength within the first 24 hours. Tetracalcium alumino-ferrite is comparatively inactive.
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The main constituent of cement which is responsible for the initial se...
Main Constituent of Cement for Initial Setting
Introduction:
Cement is an essential material used in the construction of buildings, bridges, roads, and other infrastructure. It is a fine powder consisting of various elements, and its two primary constituents are calcium silicates and calcium aluminates.
Initial Setting of Cement:
The initial setting of cement refers to the time at which the cement paste starts losing its plasticity and hardening. This process is essential for the curing of the cement and the final strength of the concrete.
Constituents Responsible for Initial Setting:
The primary constituent responsible for the initial setting of cement is tricalcium aluminate (C3A). When water is added to cement, C3A reacts with the water to form calcium aluminate hydrates, which are responsible for the initial setting of the cement.
Other Constituents of Cement:
Apart from tricalcium aluminate, cement also contains dicalcium silicate (C2S) and tricalcium silicate (C3S). These two constituents are responsible for the strength of the cement and contribute to its long-term durability.
Conclusion:
In conclusion, tricalcium aluminate is the primary constituent responsible for the initial setting of cement. However, dicalcium silicate and tricalcium silicate also play a crucial role in the strength and durability of the cement. Understanding the role of these constituents is essential for the proper selection and use of cement in construction.
Introduction:
Cement is an essential material used in the construction of buildings, bridges, roads, and other infrastructure. It is a fine powder consisting of various elements, and its two primary constituents are calcium silicates and calcium aluminates.
Initial Setting of Cement:
The initial setting of cement refers to the time at which the cement paste starts losing its plasticity and hardening. This process is essential for the curing of the cement and the final strength of the concrete.
Constituents Responsible for Initial Setting:
The primary constituent responsible for the initial setting of cement is tricalcium aluminate (C3A). When water is added to cement, C3A reacts with the water to form calcium aluminate hydrates, which are responsible for the initial setting of the cement.
Other Constituents of Cement:
Apart from tricalcium aluminate, cement also contains dicalcium silicate (C2S) and tricalcium silicate (C3S). These two constituents are responsible for the strength of the cement and contribute to its long-term durability.
Conclusion:
In conclusion, tricalcium aluminate is the primary constituent responsible for the initial setting of cement. However, dicalcium silicate and tricalcium silicate also play a crucial role in the strength and durability of the cement. Understanding the role of these constituents is essential for the proper selection and use of cement in construction.
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The main constituent of cement which is responsible for the initial setting of cement isa)Dicalcium silicateb)Tricalcium silicatec)Tricalcium aluminated)All of the aboveCorrect answer is option 'C'. Can you explain this answer?
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