Mechanical Properties of Mortars Based on Roman Cement with the Addition of Power Plant Fly Ash

Roman cement is a historic hydraulic binder, prepared by firing of limestone with high proportion of clay minerals, usually at temperatures below the sintering point. The firing temperatures of Roman cements range from 800 to 1200°C. At present, this binder is considered to be a promising material w...

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Bibliographic Details
Published in:Key engineering materials 2020-10, Vol.868, p.39-44
Main Authors: Daňková, Jana, Bujdoš, David, Majstríková, Tereza, Mec, Pavel
Format: Article
Language:English
Subjects:
Admixtures
Cement
Clay minerals
Electric power generation
Environmental impact
Firing
Fly ash
Limestone
Mechanical properties
Mortars (material)
Natural cement
Power plants
Raw materials
Roman cement
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Summary:Roman cement is a historic hydraulic binder, prepared by firing of limestone with high proportion of clay minerals, usually at temperatures below the sintering point. The firing temperatures of Roman cements range from 800 to 1200°C. At present, this binder is considered to be a promising material with a low carbon footprint and a long lifetime. The properties of Roman cement are influenced by many factors, especially raw materials composition and firing conditions. On the other hand, a disadvantage of mortars based on Roman cement is a slow increase of initial strength. In this paper, the influence of power fly ash admixture on the dynamics of initial strength increase was experimentally investigated. The characteristics of mortars with admixtures were compared with the properties of reference mortar without admixtures. The Roman cement Vicat Prompt TM Natural Cement (manufactured by Vicat SA, French company) was used as a binder. Based on the results of the experiment it can be stated that mortars with the admixture of power plant fly ash show higher dynamics of the increase of initial strengths than the reference mixture.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.868.39