Page 29 - ConcreCem - State of the Art

Table 10.2: density, flexural and compressive strength prisms according to EN 196-1
samples
date
D
prepared
tested
[kg/m3]
Rf
Fc
Rc
[N/mm2]
[kN]
[N/mm2]
90417-M1
17-04-09
21 hours 3
5
7
14
28
18-04-09 2380 20-04-09 2390 22-04-09 2410 24-04-09 2410 01-05-09 2350 15-05-09 2360
Ff [kN]
6,15 14,5 > 10 > 22 - -
- -
- -
- -
108,1 158,9 179,2 188,3 201,2 238,5
67,6
99,3 112,0 117,7 129,8 149,0
Remarks:
Rate of load flexural strength: 50 ± 10 N/sec
D: Density samples [kg/m3]
Ff: Maximum flexural load at failure [kN] Rf: Flexural strength [N/mm2]
Figure 10.6 shows the results up to 28 days.
Rate of load compressive strength: 2400 ± 200 N/sec
Fc: Rc:
Maximum compressive load at failure [kN] Compressive strength [N/mm2]
160 140 120 100
80 60 40 20
Mix C150
(preparation date: 17-4-2009)
0
0 7 14 21 28
Age specimen
Figure 10.2: Compressive strength prisms Mix C150
10.3 Mix C180
CEM I 52,5R
ConcreCem (0,3% by mass of cement)
Silica Fume, powder
Quartsfiller
Water
Super plasticizer, Glenium 51
Crushed sand 0/1
Steel fibers (OL13/.16)
Water / binder ratio
Density
Estimated compressive strength (after 28 days)
Remark:
864 2,6 198 335 196 105 432 542 0,25 2680 180 MPa
Material
Amount of material in 1 m3 concrete [kg]
• This mixture contains an surplus of fibres and therefore the workability slows down.
• The workability can be improved by using a retarder. Findings and results will be added to this report.
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Compressive strength [MPa]