Supplementary Cementing Materials

Question 1

All pozzolanic scms

Answer 1

Silica fume, low calcium oxide fly ash

Question 2

Pozzolanic and and hydraulic reaction SCM’s

Answer 2

Medium calcium oxide fly ash high calcium oxide fly ash slag

Question 3

Why use SCM’s

Answer 3

Maybe our industrial five products they’re cheaper than cement, can improve long-term durability of concrete

Question 4

Definition of pozzolanic

Answer 4

Has little or no cementitious value in itself but when in the presence of moisture well chemically react with calcium hydroxide to form cementitious properties

Question 5

Source of fly ash

Answer 5

Byproduct of call combustion

Question 6

Which fly ash has a faster reaction

Answer 6

Class C fly ash

Question 7

Source of slag

Answer 7

By product production of metal or refined metal

Question 8

What SCM would you use to decrease bleeding

Answer 8

Fly ash, silica fume

Question 9

What SCM’s decrease air content

Answer 9

Fly Ash, silica fume

Question 10

What SCM increased is plastic shrinkage cracking

Answer 10

Silica fume

Question 11

Increase in strength gains what SCM

Answer 11

Silica fume

Question 12

What supplementary cementing materials decrease permeability

Answer 12

All of them

Question 13

For early strength and late strength what supplementary cementing material should you use

Answer 13

Silica fume

Question 14

What effect do supplementary cementing materials have on the inter-facial transition zone

Answer 14

Because supplementary cementing materials are smaller than concrete the porosity and D I TZ is decreased and that increases the strength gains of the concrete

Question 15

Combination for long term strength In concrete using supplementary cementing materials

Answer 15

Fly ash in silica fume

Question 16

Why use fly ash as a supplementary cementing material

Answer 16

It is half the cost of cement

Question 17

What is the most important stage of Portland cement manufacture? Why?

Answer 17

When the right materials go through the rotary kiln The C3 SC to S and clinker or produce this C3 us and see you too as contribute largely to strength gains early and late in concrete and the clinker once ground will be the actual concrete

Question 18

What is the impact of the use of pozzolanic materials on the durability of concrete explain

Answer 18

Pause a Linux materials generally increase the durability of concrete because when puzzle in a material that was our use that or finer than the seeming grains they decrease the impact of the interfacial transistor in zone by decreasing the permeability