Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Effects of compatibility between PNS Superplasticzer and soluble alkali of cements on performances of concrete

PNS계 고성능 감수제와 시멘트 수용성 알칼리양과의 상용성이 콘크리트 물성에 미치는 영향

  • Ahn, Tae-ho (International Sustainable Engineering Materials (ISEM) Center, Ceramic Materials Institute & Division of Advanced Materials Sci. Eng., Hanyang University) ;
  • Park, Junhui (SERIC Research & Development Center, SERIC Co., Ltd.) ;
  • Sho, Kwangho (Department of Architectural Engineering, Wonkwang University)
  • 안태호 (한양대학교 신소재공학과, 세라믹연구소 국제지속가능공학소재(ISEM)센터) ;
  • 박준희 ((주)세릭(SERIC)연구개발센터) ;
  • 소광호 (원광대학교 건축공학과)
  • Received : 2017.07.29
  • Accepted : 2017.08.21
  • Published : 2017.08.31
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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 $Na_2SO_4$ 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.

PNS 감수제와 시멘트 페이스트의 유동성의 관계를 평가하기 위해 물시멘트비 35 %에 PNS의 감수제 첨가하여 세 가지 시멘트에 대해 평가하였다. 세 가지 시멘트의 화학적 성질은 XRD, XRF로 평가하고, 물시멘트비 33 %인 콘크리트에 대한 $Na_2SO_4$의 첨가 효과는 압축강도, 슬럼프, 공기 함량의 측정에 의해 평가하였다. 실험 결과는 시멘트 A 및 C에 황산나트륨 2.6 %를 첨가하면 슬럼프 손실이 개선됨을 보여 주었으며, 시멘트 E의 경우 황산나트륨 1.3 % 첨가가 효과적이었다.

Keywords

References

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