GATE 2024 Building Materials Foundation Quiz 43

Which of the following are correctly matched?

1) Consistency Test: Plunger of 10mm size

2) Initial setting time test: Square needle of size 1mm

3) Final setting time test: Annular collar of 5mm

Which of the following statements are correct regarding field tests of cement?

Which of the following statements is/are true?

1) According to Abram’s law, the strength of fully compacted concrete is directly proportional to water-cement ratio.

2) The fineness of cement is expressed in terms of specific surface of cement.

3) The fineness of cement can be calculated by Blaine air permeability method.

4) Coarser cement particles may cause bleeding by settling down in concrete.

Which of the options are correct for a 3m³ of concrete having design mix proportion of 1 : 2 : 7 (by volume)

Which of the following occurs after raising the C₃A content in cement?