Cement reactions

Cement reactions

Professional Development

5 Qs

quiz-placeholder

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Cement reactions

Cement reactions

Assessment

Quiz

Professional Development

Professional Development

Medium

Created by

Yu Yuen

Used 19+ times

FREE Resource

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the four major compounds found in raw ordinary Portland cement?

C3S, C2S, C3A, C4AF

SO3, SiC, CAA, CO2

FeO, NO2, NaCl, N2

C-S-H, CH, Ettringite, H

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the major major hydration product of cement?

Ettringite

C3S

C-S-H

H

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sulfate attack on concrete can produce cracking and spalling. What is the cause?

early ettringite formation (EEF)

delayed ettringite formation (DEF)

delayed sleeping

delayed C-S-H formation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Moisture curing of concrete can increase strength. Why?

delayed ettringite formation

hydration of unreacted cement grains.

hydration of gypsum

hydration of aggregate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cement hydration is a heat-releasing reaction. To reduce the hydration heat, the best way is to partially replace cement with...

gypsum

sand

pozzolans

water