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HUBÁČEK, A. HELA, R. HUBERTOVÁ, M. ŠPERLING, P.
Original Title
K-Value Determination Options for Active Admixtures
Type
conference paper
Language
English
Original Abstract
Concrete admixtures have been successfully used in cementitious composites (especially in concrete) for many years. Recently, however, their importance and usefulness has been increasing, especially with regard to the reduction of the clinker factor in concrete production. In the application of active admixtures in concrete, as a partial replacement of cement, k-value concepts are used in the design of concrete formulation and the calculation of the water coefficient. However, it is essentially a matter of determining the amount of total countable binder, i.e. the cement and part of the active admixture used to calculate the water coefficient. However, this concept does not address the activity of the admixture and the determination of the equivalent replacement of the cement by an admixture with a given hydraulic activity. The k-value concepts are poorly defined in the Czech standards. At present, the k-value only describes the effect of the addition of an active admixture on the value of the hydraulic coefficient, but does not take into account the dependence between the activity of the admixture and the replacement potential of a given cement type.
Keywords
Concept of Equivalent Concrete Properties, Efficiency Index, K-Value, Mathematical Models, Type II Admixture
Authors
HUBÁČEK, A.; HELA, R.; HUBERTOVÁ, M.; ŠPERLING, P.
Released
30. 8. 2022
Publisher
Scientific.net
Location
Switzerland
ISBN
1662-9779
Periodical
Solid State Phenomena
Year of study
1
Number
366
State
Swiss Confederation
Pages from
193
Pages to
200
Pages count
8
URL
https://www.scientific.net/SSP.336.193
BibTex
@inproceedings{BUT181589, author="Adam {Hubáček} and Rudolf {Hela} and Michala {Hubertová} and Petr {Šperling}", title="K-Value Determination Options for Active Admixtures", booktitle="Solid State Phenomena", year="2022", journal="Solid State Phenomena", volume="1", number="366", pages="193--200", publisher="Scientific.net", address="Switzerland", doi="10.4028/p-5grkje", issn="1662-9779", url="https://www.scientific.net/SSP.336.193" }