Reinforcing steel inside concrete is protected by the passive layer that forms due to the high pH environment inside concrete.  This passive layer can be broken down by two main mechanisms.  Please select both:

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Q: Hydration of cement is due to chemical action of water with Tetra calcium Aluminoferrite Tricalcium…

A: Answer: d)Tricalcium silicate and Dicalcium silicate

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Q: In performing the ASTM C128, If the surface moisture is still present, the fine aggregate will…

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Q: This is a type of admixture that is used to slow the rate of concrete hardening

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Q: Two of the prevention methods to reduce a. Using mild steel Using inhibitors b. C. Reduce the…

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Q: Determine the product of inertia (lxy) for the composite

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Q: Which of the following statements is correct? A) Pozzolans react with Calcium Silicate Hydrate…

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Q: 24 - Which of the following is the common effect of pozzolan on concrete. A) Decrease in hydration…

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Q: The tricalcium aluminate compound present in cement

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Q: 19 - Which of the following does not affect the aggregate gradation in concrete? A) Special concrete…

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Q: - Sand -lime bricks are hardened by firing in continuous kiln firing with clamps steaming in an…

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Q: Determine the modulus of resilience for each of the following metals: (a) Stainless steel AISI 302…

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Q: Q2) Why retrofitting of concrete structures is important? (CO2-PO2, C1)

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