K-Value Determination Options for Active Admixtures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU147051" target="_blank" >RIV/00216305:26110/22:PU147051 - isvavai.cz</a>
Result on the web
<a href="https://www.scientific.net/SSP.336.193" target="_blank" >https://www.scientific.net/SSP.336.193</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/p-5grkje" target="_blank" >10.4028/p-5grkje</a>

Result language
angličtina
Original language name
K-Value Determination Options for Active Admixtures
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/FV40343" target="_blank" >FV40343: Construction silicate systems of paved areas and roads for ecology rainwater managemet</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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