environmental exposure conditions: RCC

Question 1

What is the minimum cement content for RCC under mild exposure as per IS 456:2000?

Answer 1

300 kg/m³

Question 2

What is the minimum cement content for RCC under moderate exposure as per IS 456:2000?

Answer 2

300 kg/m³

Question 3

What is the minimum cement content for RCC under severe exposure as per IS 456:2000?

Answer 3

320 kg/m³

Question 4

What is the minimum cement content for RCC under very severe exposure as per IS 456:2000?

Answer 4

340 kg/m³

Question 5

What is the minimum cement content for RCC under extreme exposure as per IS 456:2000?

Answer 5

360 kg/m³

Question 6

What is the minimum grade of concrete for RCC under mild exposure as per IS 456:2000?

Answer 6

M20

Question 7

What is the minimum grade of concrete for RCC under moderate exposure as per IS 456:2000?

Answer 7

M25

Question 8

What is the minimum grade of concrete for RCC under SEVERE exposure as per IS 456:2000?

Answer 8

M30

Question 9

What is the minimum grade of concrete for RCC under very severe exposure as per IS 456:2000?

Answer 9

M35

Question 10

What is the minimum grade of concrete for RCC under extreme exposure as per IS 456:2000?

Answer 10

M40

Question 11

What is the maximum water-cement ratio for RCC under mild exposure as per IS 456:2000?

Answer 11

.55

Question 12

What is the maximum water-cement ratio for RCC under moderate exposure as per IS 456:2000?

Answer 12

.5

Question 13

What is the maximum water-cement ratio for RCC under severe exposure as per IS 456:2000?

Answer 13

.45

Question 14

What is the maximum water-cement ratio for RCC under very severe exposure as per IS 456:2000?

Answer 14

.45

Question 15

What is the maximum water-cement ratio for RCC under extreme exposure as per IS 456:2000?

Answer 15

.4