GATE CE 2022: BUILDING MATERIALS:QUIZ 70

Out of the following test methods for Ordinary Portland Cement (OPC) and concrete, which of them is/are correctly matched?

Which of the following are correctly matched (More than one answer may be correct)

The amount of tetra calcium Aluminoferrite (C₄AF) required in cement that is responsible for flash set but generates less heat comparatively is approximately what percentage of cement.

Consider the following statement regarding timber

I. Timber strength is more along grains

II. At the fiber saturation point, all water except water bound in the cell wall is removed.

III. Green timber cracks and splits easily

IV. Heartwood is preferable in engineering use.

Which of the following above statements is/are correct?

General shrinkage in cement concrete is caused by

Consider a series of activity A, B, C, D and E, comprising a project where a, m, b duration of each activity are indicated. The area under the normal probability curve is indicated. What is the probability of completing the project in 37 days ? (up to 2 decimal places)