The Influence of Salt Water on Chloride Penetration in Geopolymer Concrete

Like Novia Halim*, Januarti Jaya Ekaputri, Triwulan

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

12 Citations (Scopus)

Abstract

This paper presents the influence of chloride ion penetration in geopolymer concrete. Fly ash as based material for geopolymer concrete was used in this mixture. Fly ash was mixed with sodium hydroxide (NaOH) 8 M and sodium silicate (Na2SiO3) as the alkali solution. The sizes of cylindrical specimens were prepared with a diameter of 100 mm and 200 mm high. Some specimens were immersed in salt water at a concentration of 3.5%, and other control specimens were cured in tap water for 30, 60, 90, and 120 days. The mechanical properties were determined with compressive test which was conducted at 28, 30, 60, 90 and 120 days. Some durability tests were performed for porosity, chloride penetration, and pH measurement. It was found that geopolymer concrete has higher compressive strength than concrete made with Ordinary Portland cement (OPC). However, chloride penetration in geopolymer concrete is higher than OPC. The pH measurement showed that geopolymer concrete has less pH than OPC concrete. The porosity of concrete has been found to influence chloride penetration and pH of concrete.

Original languageEnglish
Article number01002
JournalMATEC Web of Conferences
Volume97
DOIs
Publication statusPublished - 1 Feb 2017
Event2016 Engineering Technology International Conference, ETIC 2016 - Ho Chi Minh City, Viet Nam
Duration: 5 Aug 20166 Aug 2016

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