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Effects of compatibility between PNS Superplasticzer and soluble alkali of cements on performances of concrete

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2017, 27(4), pp.173~177
  • DOI : 10.6111/JKCGCT.2017.27.4.173
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : July 29, 2017
  • Accepted : August 21, 2017
  • Published : August 31, 2017

Tae-ho Ahn 1,  Junhui Park 2,  Sho, Kwang Ho 3

1한양대학교
2(주)세릭
3원광대학교

Accredited

ABSTRACT

A polynaphthalenesulfonate (PNS) superplasticizer and its relation to the fluidity of cement paste (w/c = 0.35) has been investigated for three cements at a given dosage of PNS superplasticizer. Chemical properties of three cements were characterized with a XRD, XRF. The additive effects of Na2SO4 on the fresh concrete with w/c = 0.33 were also estimated by the measurement of compressive strength, slump, air content. The experimental results exhibited that the addition of sodium sulfate 2.6 % to the cement A and C improves slump loss. In case of cement E, the addition of sodium sulfate 1.3 % was effective.

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