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Open Access Creep analysis of concrete with different mineral admixtures

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In order to comprehensively master the effect of different mineral admixtures on the creep behavior of concrete, the mechanical properties and creep of concrete with active mineral admixtures (i.e., fly ash (FA), ground granulated blast-furnace slag (GGBS), metakaolin (MK)) and inert mineral admixtures (i.e., limestone powder (LP), quartz sand powder (QSP) and emery powder (EP)) were studied by using a self-made testing device. The corresponding effect mechanism was also analyzed according to the internal relative humidity (IRH) and pore microstructure organization of the mixed concrete. The results show that the use of FA and/or GGBS can reduce the creep of concrete, and more creep can be reduced if both MK and inert mineral admixtures are used, although different mineral admixtures have different effects on the compressive strength and elastic modulus of the mixed concrete. The correlation between specific creep and IRH can be characterized in three different zones. The combined use of FA and GGBS can reduce the pore volume of pores of different sizes, and the concrete mixes with MK and inert mineral admixtures have very similar pore size distribution to provide more resistance to their creep.
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Document Type: Research Article

Publication date: August 1, 2016

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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