Civil Engineering Reference
In-Depth Information
Table 6.1
Estimated internal restraint for different aggregates
Limiting temperature drop for varying restraint factor (R)
Thermal expansion
coeficient
Tensile strain
capacity (10
-6
)
Limiting temperature
differential when R = 0.36
Aggregate type
1.00
0.75
0.50
0.25
(10
-6
/°C)
°C
°C
°C
°C
°C
Gravel
12.0
70
7.3
9.7
14.6
29.2
20.0
Granite
10.0
80
10.0
13.3
20.0
40.0
27.7
Limestone
8.0
90
14.1
18.8
28.2
56.3
39.0
Sintered pfa
7.0
110
19.6
26.2
39.2
78.4
546
Source
:
BS 8110.2-1985.
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