Effects of Mix Proportion and Curing Condition on Carbonation of Seawater-Mixed Concrete

Adiwijaya, Ali and Hamada, Hidenori and Sagawa, Yasutaka and Yamamoto, Daisuke (2014) Effects of Mix Proportion and Curing Condition on Carbonation of Seawater-Mixed Concrete. In: Conference for Civil Engineering Research Networks 2014 Jointly with 7th ASEAN Civil Engineering Conference, 4th - 5th November 2014, Bandung-Indonesia.

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Official URL: http://concern.itb.ac.id/

Abstract

Discussions on carbonation of concrete have been revealed by many researchers. However, the investigation on carbonation of seawater-mixed concrete is not explored. In this study, carbonation of seawater-mixed or tap water mixed concrete with 40%, 50% and 60% of W/C under various curing conditions were investigated. Concrete prism specimens using tap water and seawater as mixing water were prepared. At 24 hours after casting, specimens were demolded and followed by distinct curing conditions such as tap water curing (TC), seawater curing (SC) and air curing (AC). After curing until 28 days, specimens were exposed in air during 4 weeks before were brought into accelerated chamber for carbonation and natural outdoor exposure. Results showed that carbonation depth of seawater- mixed concrete in AC was smaller compared to that of tap water mixed concrete in both accelerated and natural exposure carbonation. However, carbonation of seawater-mixing and tap water-mixing were similar in SC. In addition, the carbonation coefficient of seawater-mixed concrete in SC was lower than that in TC and the lowest carbonation ratio of seawater mixed concrete in AC was for 50% of W/C followed by 60% and 40% of W/C. Keywords—seawater-mixing; tap water-mixing; carbonation; mix proportion; curing condition

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: 09 Apr 2018 22:00
Last Modified: 16 Apr 2018 06:12
URI: http://repository.poliupg.ac.id/id/eprint/633

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