Civil Engineering Reference
In-Depth Information
Table 1.1
Coefficients of linear thermal
expansion per °C
x
10
-6
Table 1.3
Reversible moisture movement (%)
Clay brick
0.02
Clay brick
5-8
Calcium silicate brick
0.01-0.05
Calcium silicate brick
8-14
Concrete brick and block
0.02-0.06
Concrete brick and block
6-12
Limestone
0.01
Granite
8-10
Sandstone
0.07
Limestone
3-4
Dense concrete gravel aggregate
0.02-0.06
Marble
4-6
Dense concrete crushed rock
aggregate (not limestone)
Sandstone
7-12
0.03-0.10
Dense concrete gravel aggregate
12-14
Dense concrete limestone aggregate
0.02-0.03
Dense concrete crushed rock
aggregate (not limestone)
Aerated concrete
0.02-0.03
10-13
Dense sand/cement renders
0.02-0.06
Dense concrete limestone aggregate
7-8
Softwoods
tangential
0.6-2.6
Aerated concrete
8
radial
0.45-2.0
Steel
12
Hardwoods
tangential
0.8-4.0
Aluminium
24
radial
0.5-2.5
Glass
9-11
Plywoods
with grain
0.15-0.2
Polycarbonate
60-70
across grain
0.2-0.3
PVC-U
40-70
Blockboard
with core
0.05-0.07
Thermoplastics
40-70
across core
0.15-0.35
GRP
20-35
Hardwoods and softwoods
with grain
4-6
Table 1.4
Irreversible moisture movement (%)
across grain
30-70
Plasterboards
18-21
Cast gypsum
18-21
Clay brick
0.02-0.07
expansion
Dense sand/cement renders
10-13
Calcium silicate brick
0.01-0.04
shrinkage
Sanded plasters
12-15
Concrete brick and block
dense aggregate
Lightweight plasters
16-18
0.02-0.06
shrinkage
GRG
17-20
medium lightweight
0.03-0.06
shrinkage
Clay tiling
4-6
ultra lightweight
0.20-0.40
shrinkage
Dense concrete gravel aggregate
0.03-0.08
shrinkage
Dense concrete crushed rock aggregate
(not limestone)
0.03-0.08
shrinkage
Table 1.2
Modulus of elasticity
E
(kN/mm
2
)
Dense concrete limestone aggregate
0.03-0.04
shrinkage
Aerated concrete
0.07-0.09
shrinkage
Steel
210
Dense sand/cement renders
0.04-0.10
shrinkage
Aluminium
70
Glass
70
Polycarbonate
2.2-2.5
Thermoplastics
2.1-3.5
PVC-U
2.1-3.5
Hardwoods
7-21
BRE Digest 228
(33)
describes how to
use the data in these tables in the
calculation of dimensional stability
Softwoods
5.5-12.5
Blockboard
with core
7-11
across core
5-8
Clay brick
4-26
Calcium silicate brick
14-18
Concrete brick and block
10-25
Concrete dense aggregate
10-36
Cast gypsum
16-20
Dense sand/cement renders
20-35
Sanded plasters
8.5-16
Plasterboards
16
