Articles
  • The relationship between various superplasticizers and hydration of mortar incorporating metakaolin
  • Tae-Ho Ahna, Kwang-Bo Shimb and Jae-Suk Ryoub,*
  • a Innovative Construction Materials Engineering, Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan b International Sustainable Engineering Materials (ISEM) Center, Ceramic Materials Institute, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791 Korea c Department of Civil Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
Abstract
Three different superplasiczers such as PNS (poly naphthalene sulfonate), PNS with additive (copolymer of acrylic acid, acrylic ester and maleic acid), and PC (polycarboxylate) were used to investigate the effect of superplasticizer types on the properties of mortar incorporating metakaolin (MK). When MK was hydrated, diffusion behaviors of aluminate and silicate were examined separately at 1, 3, 7 and 28 days by X-ray diffraction, SEM/EDS and for considerable effect on the hydration rate and hydrates types. The results showed that PNS with additive were effective in promoting pozzolanic reaction. Considering the workability and the compressive strength, it is desirable to use PNS with additive in the production of high-performance concrete incorporating MK.

Keywords: PNS, superplasticizers, Metakaolin, Compressive strength, High-performance concrete.

This Article

  • 2015; 16(2): 181-187

    Published on Apr 30, 2015

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