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http://dx.doi.org/10.6111/JKCGCT.2017.27.4.173

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

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)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.27, no.4, 2017 , pp. 173-177 More about this Journal
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.
Keywords
Polynaphthalenesulfonate; Superplasticizer; Fluidity; Compressive strength; Sodium sulfate;
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