G1

Question 1

Plain concrete is…

Answer 1

Concrete without any reinforcing

Question 2

Thermal expansion of concrete or steel:

Answer 2

Is the same in both

Question 3

Cement paste bonds to

Answer 3

Reinforcing steel

Question 4

Prestressed concrete is:

Answer 4

In a state of pre-compression

Question 5

Pre-tensioning is:

Answer 5

Before concrete is placed

Question 6

Which shape is not a type of concrete shell roof?

Answer 6

Flat roof.

Question 7

What is used to reproduce the texture of forming materials?

Answer 7

Form lining

Question 8

Concrete masonry is construction from…

Answer 8

Bricks or blocks

Question 9

Concrete with air entrainment has:

Answer 9

Microscopic air bubbles.

Question 10

Cement mixture applied with compressed air is called:

Answer 10

Shotcrete

Question 11

What makes pervious concrete different from other concrete types?

Answer 11

It is porous

Question 12

3 basic elements of concrete are:

Answer 12

Cement, water, aggregates

Question 13

Rocklike substance produced by a kiln is called:

Answer 13

Clinkers

Question 14

4 basic ingredients used in the manufacture of cement I known as:

Answer 14

Iron, silica, alumina, and limestone.

Question 15

Normal Portland cement is now known as:

Answer 15

GU cement.

Question 16

High-Early strength hydraulic cement is:

Answer 16

HE cement

Question 17

LH cement is used for:

Answer 17

Low heat-of-hydration concrete

Question 18

Expansive cements cause concrete to:

Answer 18

Expand during setting

Question 19

Good aggregates should be shaped:

Answer 19

Round and vertical

Question 20

Good aggregates should:

Answer 20

Be clean, hard and strong

Question 21

Fine aggregates are usually considered to be:

Answer 21

Less than 5mm

Question 22

An accelerator is an example of an:

Answer 22

Admixture

Question 23

Masonry cement best suited for foundation construction is:

Answer 23

Type M

Question 24

A major greenhouse gas produced by the cement industry is:

Answer 24

CO2

Question 25

One way to reduce CO2 emissions during cement production is to:

Answer 25

Decrease amount of clinkers used.

Question 26

The slump cone should be filled up and rodded in how many layers?

Answer 26

3

Question 27

Proper size of a slump cone in mm?

Answer 27

100 x 200 x 300

Question 28

To make strong durable concrete, the water-cement ratio should be:

Answer 28

Low

Question 29

In concrete, aggregates make up what percentage?

Answer 29

60-80%

Question 30

Except for slab on grade, the size of aggregates should be___of the thickness of the member.

Answer 30

1/5th

Question 31

Concrete being pumped should have a ____added

Answer 31

Superplasticizer

Question 32

Retarding ad-mixtures are used:

Answer 32

To slow down the setting time of concrete.