Possibilities of K-Value Determination for Active Admixtures with Respect to Durability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0198088" target="_blank" >RIV/00216305:26110/26:0198088 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/1996-1944/18/10/2227" target="_blank" >https://www.mdpi.com/1996-1944/18/10/2227</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma18102227" target="_blank" >10.3390/ma18102227</a>

Result language

angličtina

Original language name

Possibilities of K-Value Determination for Active Admixtures with Respect to Durability

Original language description

This paper discusses the possibility of determining k-values for active admixtures concerning durability factors such as the depth of penetration of water under pressure and the depth of carbonation of cement mortars with fly ash. The k-value considers the use of active admixtures in concrete when calculating the water/cement ratio and the equivalent amount of binder. Currently, only the effect of the active admixture on the compressive strength of concrete and cement mortars is considered when determining the k-value, but not the effect of the active admixture on durability. To account for the influence of durability factors on the determination of the k-value, the mathematical functions of the property, dependent on the water/cement ratio and the age of the cement mortar, were constructed using regression analysis. From the determined functions, it was then possible to use an optimisation problem to determine the k-value so the difference between the actual measurement and calculated depth of pressure water seepage or carbonation was as small as possible. A high coefficient of determination of 0.9855 was achieved for the pressure water seepage depth function, but the coefficient of determination for the carbonation depth was lower.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10400 - Chemical sciences

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials

ISSN

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e-ISSN

1996-1944

Volume of the periodical

18

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

25

Pages from-to

1-25

UT code for WoS article

001496446800001

EID of the result in the Scopus database

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