Search for collections on PNUP Repository

Evaluation of Seawater Mixing and Curing on Strength Characteristics and Porosity of Fly Ash Concrete

adiwijaya, adiwijaya and Hamada, Hidenori and Sagawa, Yasutaka and Yamamoto, Daisuke (2021) Evaluation of Seawater Mixing and Curing on Strength Characteristics and Porosity of Fly Ash Concrete. In: 9th International Conference of Asian Concrete Federation (ACF 2020/2021), 26 - 27 November 2021, Pathum Thani, Thailand.

[thumbnail of Conference Proceeding] Text (Conference Proceeding)
05. ACF2021 Proceeding_Adiwijaya.pdf - Published Version

Download (837kB)


This paper presents the strength characteristics and porosity of concrete mixed with seawater and tap
water incorporating Fly Ash (FA) with a water binder ratio of 40%, 50%, and 60%. The effect of seawater
mixing, FA, and curing conditions such as tap water curing (TC), seawater curing (SC), and air curing
(AC) on the strength performance of concrete was evaluated. Moreover, the total pore volume (porosity)
and thermogravimetric-differential thermal analysis (TG-DTA) were also observed to verify the results of
compressive strength of concrete cylinder specimens. Eight series of concrete mixtures using tap water or
seawater as mixing water were prepared by OPC and FA as a binder specified in Japan Industrial
Standard. Concrete specimens were demolded at 24 hours after casting, then cured in tap water, in
seawater, and in air (20ºC, R.H. 60% controlled room). After certain curing of 28 days and 365 days,
compressive strength was measured in accordance with Japan Industrial Standard. Based on the
investigation result, it was obtained that seawater mixing improved the strength of OPC concrete and FA
concrete up to 365 days in all curing conditions, in TC, SC, and AC. The Porosity of seawater-mixed
OPC concrete and FA concrete was decreased compared to tap water-mixed concrete. It was also found
that the mass change (weight loss) of hydration product (CH) of seawater-mixed OPC concrete was
higher than that of tap water-mixed OPC concrete in TC and AC.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Jurusan Teknik Sipil > D4 Perancangan Bangunan Gedung
Depositing User: Dr.Eng. ADIWIJAYA, S.ST., M.T.
Date Deposited: 24 May 2023 01:20
Last Modified: 17 Jun 2023 06:12

Actions (login required)

View Item
View Item