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10 ConcreCem and mix design of High Strength Concrete
In case of high strength concrete a lot of cement is used which contributes to easily cracking of the concrete due to the high temperature which will occur in the mix.
Adding ConcreCem will reduce this cracking.
In the paragraphs below mix designs with ConcreCem of a C120, C150 and C180 are given.
10.1 Mix C120
CEM I 52,5R
CEM III/A 52,5 N
ConcreCem (0,3% by mass of cement) Silica Fume
Water
Super plasticiser, Glenium 51
Round Sand 0/1
Steel fibres (OL13/.16)
Water / binder ratio
Density
Compressive strength (after 28 days)
358 554 2,74
60
229
44 1012 125 0,25 2380 kg/m3 120,0 MPa
Material
Amount of material in 1 m3 concrete [kg]
Figure 10.1: Preparing, mixing and testing mix C120
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