Effect of a Combination Fly Ash and Shrinkage-Reducing Additives on the Properties of Alkali-Activated Slag-Based Mortars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F16%3APU120728" target="_blank" >RIV/00216305:26310/16:PU120728 - isvavai.cz</a>

Výsledek na webu

<a href="http://mit.imt.si/Revija/izvodi/mit165/bilek_v.pdf" target="_blank" >http://mit.imt.si/Revija/izvodi/mit165/bilek_v.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2015.133" target="_blank" >10.17222/mit.2015.133</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of a Combination Fly Ash and Shrinkage-Reducing Additives on the Properties of Alkali-Activated Slag-Based Mortars

Popis výsledku v původním jazyce

This study is aimed at reducing the drying shrinkage of alkali-activated slag (AAS) through the use of low-calcium fly ash (FA) and commercially available shrinkage-reducing additives (SRAs) originally developed for OPC-based binders, since there are no such admixtures tailored for AAS systems. Generally, all the SRAs tested are based on modified alcohols. All the mortars were based on slag activated by waterglass, with the water-to-slag ratio equal to 0.40 and the sand-to-binder ratio 2:1. In the first step, the effect of the partial replacement of slag by FA (25, 50 and 75) % of mass fractions on the drying shrinkage and compressive strength was investigated. On the basis of the obtained results a mortar with 50 % FA in the binder was chosen for subsequent experiments, where the influence of three types of SRAs on the drying-shrinkage behaviour was examined.

Název v anglickém jazyce

Effect of a Combination Fly Ash and Shrinkage-Reducing Additives on the Properties of Alkali-Activated Slag-Based Mortars

Popis výsledku anglicky

This study is aimed at reducing the drying shrinkage of alkali-activated slag (AAS) through the use of low-calcium fly ash (FA) and commercially available shrinkage-reducing additives (SRAs) originally developed for OPC-based binders, since there are no such admixtures tailored for AAS systems. Generally, all the SRAs tested are based on modified alcohols. All the mortars were based on slag activated by waterglass, with the water-to-slag ratio equal to 0.40 and the sand-to-binder ratio 2:1. In the first step, the effect of the partial replacement of slag by FA (25, 50 and 75) % of mass fractions on the drying shrinkage and compressive strength was investigated. On the basis of the obtained results a mortar with 50 % FA in the binder was chosen for subsequent experiments, where the influence of three types of SRAs on the drying-shrinkage behaviour was examined.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

50

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

5

Strana od-do

813-817

Kód UT WoS článku

000386195300029

EID výsledku v databázi Scopus

2-s2.0-84992088254