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RHEOLOGY OF MORTAR WITH PORTLAND-LIMESTONE CEMENT CEM II/A,B-LL IN RELATION TO PROPERTIES OF CEMENT

Małgorzata GOŁASZEWSKA

Małgorzata GOŁASZEWSKA

Faculty of Civil Engineering, The Silesian University of TechnologyGliwice, Poland
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GOŁASZEWSKA, Małgorzata
  
20. Mai 2019
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Artikel-Kategorie: research-article
Online veröffentlicht: 20. Mai 2019
Seitenbereich: 81 - 89
Eingereicht: 15. Juli 2018
Akzeptiert: 30. Nov. 2018
DOI: https://doi.org/10.21307/acee-2019-007
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© 2019 Małgorzata GOŁASZEWSKA., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Particle size distribution for limestones B and T and Portland cement CEM I 42.5R NA
Particle size distribution for limestones B and T and Portland cement CEM I 42.5R NA

Figure 2.

Rheometer Viskomat NT used in the research (a) and exemplary measurement result (b)
Rheometer Viskomat NT used in the research (a) and exemplary measurement result (b)

Figure 3.

Yield stress of mortars with Portland cements CEM I
Yield stress of mortars with Portland cements CEM I

Figure 4.

Yield stress of mortars with Portland limestone cement with limestone T (top), limestone B (bottom) after 5 and 60 minutes from mixing
Yield stress of mortars with Portland limestone cement with limestone T (top), limestone B (bottom) after 5 and 60 minutes from mixing

Figure 5.

Plastic viscosity h of mortars with Portland limestone cement with limestone T (top), limestone B (bottom) after 5 and 60 min from mixing
Plastic viscosity h of mortars with Portland limestone cement with limestone T (top), limestone B (bottom) after 5 and 60 min from mixing

Figure 6.

The relationship between the content of the C3A phase in the cement and the yield value
The relationship between the content of the C3A phase in the cement and the yield value

Figure 7.

The relationship between the specific surface area of cement and the yield value
The relationship between the specific surface area of cement and the yield value

Figure 8.

The relationship between the content of the C3A phase in the cement and the plastic viscosity
The relationship between the content of the C3A phase in the cement and the plastic viscosity

Figure 9.

The relationship between the specific surface S of cement and the plastic viscosity
The relationship between the specific surface S of cement and the plastic viscosity

Chemical composition of the limestones used in the research

Ingredient Ingredient content, % of mass
Limestone B Limestone T
LOI 41.7 42.7
SiO2 4.58 1.4
Al2O3 0.75 0.4
Fe2O3 0.34 0.5
CaO 52.43 53.2
MgO 0.66 1.5
SO3 0.12 0.02
Cl- 0.022 0.007

Chemical composition of Portland cements used in the research

Ingredient Ingredient content, % of cement mass
CEM I 42.5R NA CEM I 52.5R CEM I 42.5 R “O” CEM I 42.5N SR5/NA
SiO2 20.55 20.65 19.9 21.17
Al2O3 4.67 5.13 6.2 3.56
Fe2O3 2.8 2.61 2.7 3.23
CaO 64.35 64.01 62.6 66.03
MgO 1.18 1.49 1.5 0.74
Na20 0.18 0.16 0.33 0.19
K2O 0.43 0.77 0.72 0.34
Na2Oeq 0.46 0.67 0.8 0.41
SO3 2.79 2.21 2.6 2.55
Cl 0.015 0.082 0.05 0.063

Physical properties of Portland cements used in the research

Property Cement designation
CEM I 42.5R NA CEM I 52.5R CEM I 42.5R “O” CEM I 42.5N SR5/NA
Density [g/cm3] 3.09 3.07 3.07 3.11
Volume constancy [mm] 0.4 0.3 0.2 1
Setting time [min] 191 167 183 165
Blaine’s specific surface [cm2/g] 3950 4917 4390 3360

Phase composition of Portland cements used in the research

Phase content, % of cement mass
Phase CEM I 42.5R NA CEM I 52.5R CEM I 42.5R “O” CEM I 42.5N SR5/NA
C3S 62.43 64.12 60.65 57.51
C2S 12.16 11.18 11.62 17.62
C3A 7.64 9.18 11.87 3.98
C4AF 8.51 7.93 8.21 9.82
CŜ2H 4.74 3.76 4.42 4.34
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