EXPANSION CHARACTERISTICS OF SEAWATER MIXED CONCRETE DUE TO ALKALI-SILICA REACTION

Adiwijaya, Ali and Hamada, Hidenori and Sagawa, Yasutaka and Yamamoto, Daisuke (2015) EXPANSION CHARACTERISTICS OF SEAWATER MIXED CONCRETE DUE TO ALKALI-SILICA REACTION. In: The 40th Conference on Our World in Concrete & Structures 2015, 26th – 28th August 2015, Singapore.

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Official URL: http://www.cipremier.com/page.php?788

Abstract

This paper presents expansion characteristics of seawater mixed concrete and tap water mixed concretein tap water curing (TC), seawater curing (SC) and moisture curing (MC).Six series of concrete mixture with 50% water-binder ratio were prepared. Ordinary Portland Cement (OPC), Fly Ash (FA) and Ground Granulated Blast-Furnace Slag (GGBS) were used as binder, with replacement ratio of FA 30% and GGBS 50%, respectively. Andesite stone was selected as a reactive coarse aggregate used in the pessimum proportion. Concrete cylindrical specimens were cured in TC, SC and MC in 40C, 100% R.H. chamber, and expansion of specimens was measured in accordance withcontact gauge method. Results showed that seawater mixed OPC concrete caused expansion due to ASR in TC, SC and MC. The expansion level of seawater mixed OPC concrete was larger in MC than that in SC and TC. However, ASR-induced expansion of seawater mixed concrete was inhibited by incorporating mineral admixtures. Keywords: Seawater, Tapwater, Mixing water, ASR, Curing condition, Mineral admixture

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TH Building construction
Divisions: Department of Civil Engineering > Teknik Konstruksi Gedung
Depositing User: Dr.Eng. Adiwijaya, S.ST., M.T.
Date Deposited: 07 Apr 2018 14:04
Last Modified: 16 Apr 2018 06:11
URI: http://repository.poliupg.ac.id/id/eprint/642

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