Civil Engineering Reference
In-Depth Information
Table 15.4
Properties of blends of different cements.
Compositions of original cements
Ordinary Portland cement (OPC)
C
3
S+++; C
2
S+++; C
3
A+; C
4
AF +; gypsum +
Calcium aluminate cement with 50% Al
2
O
3
(CAC-A)
CA++++; CA
2
++;
C12
A7++
Calcium aluminate cement with 73% Al
2
O
3
(CAC-B)
CA+++; CA
2
++; C
12
A
7
++
Calcium sulfoaluminate-belite cement (CSAB)
C
4
A
3
S++++; C
2
S+++; gypsum++
Calcium sulfoaluminate clinker (CSAC)
C
4
A
3
S++; C
2
S+++; C++
Phase composition of hydrated material and relative strength
(pastes
w/c
=0.4 hydrated 3 d)
Combination
Ratio
Hydrate phases formed
Compressive strength (%)
1. OPC+CAC-A
90:10
P(H), E(L)
101
P(M), E(L), S(L), C
3
AH
6
(L)
50:50
74
P(L), C
3
AH
6
(L)
10:90
56
P(H), CAH
10
(L)
2. OPC+CAC-B
90:10
100
P(M), MS(L), S(H), C
2
H
8
(M)
50:50
84
P(L), MS(L), S(L), C
2
AH
8
(M),
C
3
AH
6
(L)
10:90
70
3. OPC+CSAB
90:10
P(H), E(M), MS(L)
108
50:50
P(L), E(M), MS(L)
44
10:90
P(M), E(M), MS(L), S(L)
135
4. OPC+CSAC
90:10
P(H), E(H)
152
50:50
P(H), E(H)
109
10:90
P(H), E(M)
128
CAH
10
(M), C
2
AH
8
(M)
5. CAC-A+CSAB
90:10
110
50:50
P(L), E(M), MS(L), S(M)
118
10:90
P(M), E(H), MS(L), S(L)
166
6. CAC-A+CSAC
90:10
P(M), E(L)
43
50:50
P(M), MS(M)
21
