Stability of air-entrainment with PCE-superplasticizers

Al-Neshawy, Fahim; Punkki, Jouni

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Stability of air-entrainment with PCE-superplasticizers



Title:	Stability of air-entrainment with PCE-superplasticizers
Author(s):	Al-Neshawy, Fahim ; Punkki, Jouni
Date:	2017
Language:	en
Pages:	4 149-152
Department:	Department of Civil Engineering
ISBN:	978-82-8208-056-9
Series:	Proceedings of the XXIII Nordic Concrete Research Symposium, Nordic concrete research
ISSN:	0800-6377
Subject:	212 Civil and construction engineering, 216 Materials engineering
Keywords:	air content, superplasticizer, air-entraining, admixtures, cement, mix design, 212 Civil and construction engineering, 216 Materials engineering
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Citation: Al-Neshawy , F & Punkki , J 2017 , Stability of air-entrainment with PCE-superplasticizers . in M Tange Hasholt (ed.) , Proceedings of the XXIII Nordic Concrete Research Symposium . Nordic concrete research , NORSK BETONGFORENING Postboks 2312, Solli N-0201 Oslo Norway , pp. 149-152 , Symposium on Nordic Concrete Research & Developement , Aalborg , Denmark , 21/08/2017 .
Abstract: Air content is an extremely important aspect of today’s concrete performance and durability characteristics. Lately in Finland, elevated air contents (>15%) have been observed from the samples drilled from structures. The high air contents have caused deficiencies in the compressive strength of concrete structures. One of the main factors affecting the stability of air content in concrete is the use of combination of Air-Entraining Agent (AEA) and Polycarboxylate Ether (PCE)–superplasticizers admixtures. This study is a part of research project, which investigate the stability of air-entrainment in concrete using different types of PCE-SP, AEA and concrete mix designs. The aim of the project is to achieve a stabile protective pore system for concrete.

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