QUESTION 19 If there is a concrete slab that is 965' long by 865' wide and 1' 11" thick, how many cubic yards of concrete are needed to pour it? Please round up to nearest whole number.

Q: You see the concrete looks dry as it is being placed as a slab. a) If you decide to spray some…

A: If the concrete is not set yet, then concrete is still in form of fresh concrete. By spraying extra…

Q: From the following figure, List down the concrete matenals by any method using class "A" concrete

A: To find - The concrete materials required. ( by any method ) Given  - Class A concrete.

Q: 35.What is the workability of concrete mixtures? How to evaluate it? please quickly thanks !1

A: We have to define workability-

Types of Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.