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

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

Architecture, Civil Engineering, Environment

Volume 12 (2019): Issue 1 (March 2019)

By: Małgorzata GOŁASZEWSKA

Open Access

|May 2019

Figures & Tables

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

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

Yield stress of mortars with Portland cements CEM I

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

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

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

The relationship between the content of the C3A phase in the 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
Ingredient	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
Ingredient	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
Na₂O_eq	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

DOI: https://doi.org/10.21307/acee-2019-007 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142

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Language: English

Page range: 81 - 89

Submitted on: Jul 15, 2018

Accepted on: Nov 30, 2018

Published on: May 20, 2019

Published by: Silesian University of Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Cement composition,

Mortar rheology,

Portland limestone cements,

Related subjects:

Architecture and design,

Architects, buildings

© 2019 Małgorzata GOŁASZEWSKA, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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