Effect of organic additives on shrinkage of AAS mortars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU119492" target="_blank" >RIV/00216305:26110/16:PU119492 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of organic additives on shrinkage of AAS mortars

Popis výsledku v původním jazyce

Alkali-activated slag binders have many advantages such as mechanical performance, durability and chemical resistance compared to ordinary Portland cement. However, they also have disadvantages such as increased shrinkage followed by the formation of microcracks. This paper presents the effect of shrinkage-reducing admixture Peramin SRA 40, polymer polyethylene glycol 1000 and polypropylene glycol on shrinkage and mechanical characteristics of alkali-activated slag concrete. These admixtures were used in different dosages in the range of 0–2.0% by mass of the slag. The results show that with increasing content of admixtures compressive and flexural strengths decreased. On the other hand, promising results in respect of shrinkage reduction were obtained particularly for polypropylene glycol where it reduced linear shrinkage of the reference mortar by up to 70%. The minimum decline of shrinkage was observed for 1% of Peramin SRA 40.

Název v anglickém jazyce

Effect of organic additives on shrinkage of AAS mortars

Popis výsledku anglicky

Alkali-activated slag binders have many advantages such as mechanical performance, durability and chemical resistance compared to ordinary Portland cement. However, they also have disadvantages such as increased shrinkage followed by the formation of microcracks. This paper presents the effect of shrinkage-reducing admixture Peramin SRA 40, polymer polyethylene glycol 1000 and polypropylene glycol on shrinkage and mechanical characteristics of alkali-activated slag concrete. These admixtures were used in different dosages in the range of 0–2.0% by mass of the slag. The results show that with increasing content of admixtures compressive and flexural strengths decreased. On the other hand, promising results in respect of shrinkage reduction were obtained particularly for polypropylene glycol where it reduced linear shrinkage of the reference mortar by up to 70%. The minimum decline of shrinkage was observed for 1% of Peramin SRA 40.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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 statě ve sborníku

NDT konference v České republice 2015

ISBN

978-80-214-5315-9

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

25-30

Název nakladatele

Brno University of Technology and CNDT

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

1. 12. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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