Geoscience Reference
In-Depth Information
Figure 7.30
Schematic diagram of concrete block performance under load: (a) plain concrete and
(b) steel fibre reinforced concrete (
after
Timuran Engineering, 2007).
Figure 7.31
Hooked end steel fibres: (a) dimensions, (b) photograph (
after
Timuran Engineering, 2007).
Table 7.5
Hooked steel fibre specifications (
after
Timuran Engineering, 2007).
Property
Specification
Fibre length
60mm
Equivalent diameter
0.75mm
Aspect ratio (length/diameter)
80
Tensile strength
1100
±
100Nmm
−
2
Piece per kg
4,600
or total replacement for conventional steel meshes (http://www.steelfibre.org). Fig-
ure 7.30 shows schematically the performances of two different concrete blocks upon
loadings: plain concrete and fibre-reinforced concrete (FRC). Figure 7.31 shows the
hooked end shape of steel fibres that are most often used to strengthen concrete mixes,
and Table 7.5 shows the properties of steel fibres.
7.8.6 Cement and fibres
Chemical stabilization using cement has been used by many researchers to improve the
performance of soft soils. Drawbacks in the behaviour of chemically stabilized soils
