Publication detail

K-Value Determination Options for Active Admixtures

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"
}