MIDTERM-GROUPQZ-#1

The general term for sand is ____________

• FINE AGGREGATE

• SOIL AGGREGATE

• COARSE AGGREGATE

• CONCRETE

The general term for gravel is ____________

• FINE AGGREGATE

• SOIL AGGREGATE

• COARSE AGGREGATE

• CONCRETE

Aggregates generally occupy _________ % of the concrete volume

• 60 to 75

• 70 to 75

• 60 to 85

• 65 to 75

The proper selection of aggregates for use in concrete mixtures is critical to long term concrete performance.

• True
• False

Aggregates must be clean, soft, strong, and durable particles that are largely free of absorbed chemicals, coatings of clay, and other fine materials in amounts that could affect hydration and bond of the cement paste.

• True
• False

The process in which cement chemically reacts with water

(a)  

Heat of Hydration is the (a)   generated during the process of hydration

Cement when mixed with water is called (a)   in concrete.

These are inert filler materials in concrete.

(a)  

(a)   refers to the ease with which freshly mixed concrete can be placed, compacted, and finished without segregation or excessive bleeding. It is a key property that affects the handling, placement, and overall quality of concrete structures.