Cement Flashcards
1
Q
What is cement made of?
A
limestone and clay
2
Q
Formula for alite
A
3CaO*SiO2, aka C3S
3
Q
Formula for belite
A
2CaO*SiO2, aka C2S
4
Q
Tricalcium aluminate formula
A
3CaO*Al2O3, aka C3A
5
Q
What also may be present in the clinker microstructure?
A
If an Fe2O3 impurity is present, 4CaOAl2O3Fe2O3 can be present as well, aka C4AF
6
Q
What is the typical composition of Portland cement?
A
> 55% Ca3SiO5
20% Ca2SiO4
10% Ca3Al2O6
8% Ca4Al2Fe2O10
5% CaSO4*2H2O (from gypsum)
7
Q
Where does the name for Portland cement come from?
A
developed in england in 1756, name derived from similarity to Portland stone quarried in Dorset, England
