120
E. Janowska-Renkas and D. Matyjaszczyk
Table 1 Composition of concretes with and without the addition of hydrophilic and hydrophobic
nanosilica, as well as silica fume and polycarboxylate superplasticizer
Identification of
concrete
Concrete
composition
Cement (kg/m 3 ) Aggregate (kg/m 3 ) Water (kg/m 3 )
M1
100% C
549.7
1619.6
211.4
M2
C+8% D
467.3
M3
C+0.5% HI
549.7
208.7
M4
C+0.5% HF
M5
C+0.5% HI+8%
D
467.3
209.1
M6
C+0.5% HF+8%
D
M7
C+0.5% HI+8%
D+0.4% SP
207.2
M8
C+0.5% HF+8%
D+0.4% SP
M9
C+1.5% HI
549.7
203.2
M10
C+1.5% HF
M11
C+1.5% HI+8%
D
467.3
204.4
M12
C+1.5% HF+8%
D
M13
C+1.5% HI+8%
D+0.4% SP
202.5
M14
C+1.5% HF+8%
D+0.4% SP
Where: C-CEM I
42.5R Portland
cement
HI-hydrophilic
nanosilica
HF-hydrophobic
nanosilica
D-silica fume
SP-polycarboxylate superplasticizer
Specimens for testing were prepared in line with normative acts (PN-EN standards) taking into account a number of test specimens, as well as their dimensions
and size.
Due to the number of test specimens, an error of results obtained was estimated
based on the expanded uncertainty of the measurement determined for test methods
applied in the study, in line with requirements imposed by the Polish Centre for
Accreditation for testing laboratories. Results of tests presented in the article are
averaged values. And so conformity of test results was determined for the concrete
mixes in scope of:
• testing of consistency: with a slump-test according. to PN-EN 12350-2:2011—
taking into account the expanded uncertainty of the measurement equal to ±1 cm,
E. Janowska-Renkas and D. Matyjaszczyk
Table 1 Composition of concretes with and without the addition of hydrophilic and hydrophobic
nanosilica, as well as silica fume and polycarboxylate superplasticizer
Identification of
concrete
Concrete
composition
Cement (kg/m 3 ) Aggregate (kg/m 3 ) Water (kg/m 3 )
M1
100% C
549.7
1619.6
211.4
M2
C+8% D
467.3
M3
C+0.5% HI
549.7
208.7
M4
C+0.5% HF
M5
C+0.5% HI+8%
D
467.3
209.1
M6
C+0.5% HF+8%
D
M7
C+0.5% HI+8%
D+0.4% SP
207.2
M8
C+0.5% HF+8%
D+0.4% SP
M9
C+1.5% HI
549.7
203.2
M10
C+1.5% HF
M11
C+1.5% HI+8%
D
467.3
204.4
M12
C+1.5% HF+8%
D
M13
C+1.5% HI+8%
D+0.4% SP
202.5
M14
C+1.5% HF+8%
D+0.4% SP
Where: C-CEM I
42.5R Portland
cement
HI-hydrophilic
nanosilica
HF-hydrophobic
nanosilica
D-silica fume
SP-polycarboxylate superplasticizer
Specimens for testing were prepared in line with normative acts (PN-EN standards) taking into account a number of test specimens, as well as their dimensions
and size.
Due to the number of test specimens, an error of results obtained was estimated
based on the expanded uncertainty of the measurement determined for test methods
applied in the study, in line with requirements imposed by the Polish Centre for
Accreditation for testing laboratories. Results of tests presented in the article are
averaged values. And so conformity of test results was determined for the concrete
mixes in scope of:
• testing of consistency: with a slump-test according. to PN-EN 12350-2:2011—
taking into account the expanded uncertainty of the measurement equal to ±1 cm,