Construction 10

Question 1

Ingredients or chemicals added to concrete to produce concrete with specific characteristics.

Answer 1

Admixture

Question 2

The techniques that are used to reinforce concrete

Answer 2

Ordinary reinforcement

Pre stressing reinforcement

Question 3

With ($$$$) steel bars are placed in the formwork and the wet concrete is placed in the formwork around the bars

Answer 3

Ordinary reinforcement

Question 4

The vertical reinforcement bars are known as ($$$$) and are provided to resist diagonal tension.

Answer 4

Stir ups

Question 5

The primary function of placing reinforcing steel in concrete is to resist ($$$$$)forces

Answer 5

Tensile

Question 6

In ($$$$) a compressive force is induced in the concrete before the load is applied.

Answer 6

Pre stressing

Question 7

In ($$$$) steel strands are stretched between anchors producing tensile force in the steel. Concrete is then placed around the steel and allowed to harden. The force is released. The stands exert compressive force.

Answer 7

Pre tensioned

Question 8

When concrete is ($$$) the reinforcing steel is not tensioned until after the conch has hardened.

Answer 8

Post tensioned

Question 9

($$$$) refers to concrete that is. Poured into forms as a liquid and assumes the shape of the form in the position and location it will be used.

Answer 9

Cast in place concrete

Question 10

The single most important factor in determining the ultimate strength of concrete is the ($$$$$$).

Answer 10

Water to cement ratio

Question 11

Wen concrete arrives at the job site, its quality is checked by administering a test known as a ($$$$)

Answer 11

Slump test

Question 12

The ($$$$$) is a simple system that consists of a concrete slab supported by a concrete column. The slab of concrete varies in thickness from ($$$)

Answer 12

Flat slab concrete frame

6 to 12 inches

Question 13

A ($$$$$$) consist of a concrete slab supported by concrete beams. Slabs can be as thin as ($$$$)

Answer 13

Slab and beam frame

2 inches

Question 14

($$$$) square forms over which concrete is place. Provides a thicker slab while deducing weight. Also known as two way slabs

Answer 14

Waffle construction

Question 15

A ($$$) also known as a bracket is a ledge that projects from the column and supports the beam.

Answer 15

Corbel

Question 16

($$$$$) concrete maybe somewhat more vulnerable to failures than ordinary concrete

Answer 16

Prestressed

Question 17

Because concrete has relatively good insulating properties it tens to retain heat and release it slowly. This is generally referred to as the ($$$$$)

Answer 17

Heat sink effect