The Effect of the Organic Additives on the Mechanical Fracture Properties and Shrinkage of Alkali Activated Slag Mortars

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Effect of the Organic Additives on the Mechanical Fracture Properties and Shrinkage of Alkali Activated Slag Mortars

Popis výsledku v původním jazyce

It is known that the production of Portland cement consumes considerable energy and contributes a large volume of CO2 to the atmosphere. One of alternative materials is alkali-activated binder using industrial by-products containing silicate materials. Alkali-activated slag binders have many advantages, but also have disadvantage as a high level of autogenous and especially drying shrinkage, which causes a deterioration of the mechanical fracture properties. This paper presents the effect of shrinkage-reducing admixture Peramin SRA 40, polymer polyethylene glycol 1000 and polypropylene glycol on shrinkage and mechanical properties of alkali-activated slag mortars. These admixtures were used in amount 0–2.0 % weight of slag. The results show that with increasing content of admixtures compressive and flexural strength decreased. On the other hand, promising results with respect of shrinkage reduction were obtained particularly for PPG where its 1 and 2 % doses reduced liner shrinkage of the reference mo

Název v anglickém jazyce

The Effect of the Organic Additives on the Mechanical Fracture Properties and Shrinkage of Alkali Activated Slag Mortars

Popis výsledku anglicky

It is known that the production of Portland cement consumes considerable energy and contributes a large volume of CO2 to the atmosphere. One of alternative materials is alkali-activated binder using industrial by-products containing silicate materials. Alkali-activated slag binders have many advantages, but also have disadvantage as a high level of autogenous and especially drying shrinkage, which causes a deterioration of the mechanical fracture properties. This paper presents the effect of shrinkage-reducing admixture Peramin SRA 40, polymer polyethylene glycol 1000 and polypropylene glycol on shrinkage and mechanical properties of alkali-activated slag mortars. These admixtures were used in amount 0–2.0 % weight of slag. The results show that with increasing content of admixtures compressive and flexural strength decreased. On the other hand, promising results with respect of shrinkage reduction were obtained particularly for PPG where its 1 and 2 % doses reduced liner shrinkage of the reference mo

Druh

O - Ostatní výsledky

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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