Shrinkage-Reducing Admixture Efficiency in Alkali-Activated Slag across the Different Doses of Activator

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F18%3APU126654" target="_blank" >RIV/00216305:26310/18:PU126654 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.761.19" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.761.19</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.761.19" target="_blank" >10.4028/www.scientific.net/KEM.761.19</a>

Result language

angličtina

Original language name

Shrinkage-Reducing Admixture Efficiency in Alkali-Activated Slag across the Different Doses of Activator

Original language description

One of the largest obstacles for the wider use of alkali-activated slag (AAS) in a building industry is its severe drying shrinkage. According to some studies shrinkage-reducing admixtures (SRAs) could be a solution of this problem, but they were also reported to have a fatal impact on AAS hydration resulting in a serious strength development slowdown. The aim of this paper was to investigate this phenomenon in a wide range of the waterglass doses (4–12% Na2O of the slag mass). Mortars without and with 2% of SRA based on hexylene glycol were prepared and their shrinkage and compressive strength development was tested. By far the highest shrinkage reduction was observed for the lowest doses of waterglass, but these were also the cases of the highest compressive strength decrease. However, it is possible to suppress the negative effect of SRA on AAS strength development through the activator dose increase with certainly decreased shrinkage reducing ability of SRA.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA17-03670S" target="_blank" >GA17-03670S: Development of shrinkage reducing agents designed for alkali activated systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Article name in the collection

Non-Traditional Cement and Concrete

ISBN

—

ISSN

1013-9826

e-ISSN

—

Number of pages

4

Pages from-to

19-22

Publisher name

Neuveden

Place of publication

Neuveden

Event location

Brno

Event date

Jun 19, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—