Effects of shrinkage-reducing admixtures on autogenous shrinkage in alkali-activated materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F19%3APU132763" target="_blank" >RIV/00216305:26310/19:PU132763 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1757-899X/583/1/012023" target="_blank" >http://dx.doi.org/10.1088/1757-899X/583/1/012023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/583/1/012023" target="_blank" >10.1088/1757-899X/583/1/012023</a>

Result language

angličtina

Original language name

Effects of shrinkage-reducing admixtures on autogenous shrinkage in alkali-activated materials

Original language description

This paper deals with possible solutions of chemical and autogenous shrinkage of alkali-activated blast furnace slag (AAS). Shrinkage is the main reason why AAS is not used in practice. One of the solutions how to reduce the shrinkage is the utilization of special chemical admixtures. In concrete technology, the use of chemical compounds based on hydrocarbon alcohols is well known, however the efficiency in AAS is still very poorly elucidated. Therefore, isopropanol was used in this study. The main aim of the work was to recognize and study the relations between chemical processes in the early stages of hydration. The effect of isopropanol on alkali activation was determined by calorimetric measurements and compared with the initial and final setting time of binder. It was found out that the presence of isopropanol additive had only insignificant effect on the setting time. On the other hand, the results indicated that an increasing amount of isopropanol deaccelerates the hydration process which was represented by smaller amount of primary CSH gel formation and delayed time of secondary binder phase formation

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

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

Article name in the collection

International Conference Building Materials, Product and Technologies

ISBN

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ISSN

1757-8981

e-ISSN

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Number of pages

8

Pages from-to

1-8

Publisher name

Neuveden

Place of publication

Neuveden

Event location

Lednice

Event date

Jun 4, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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