Susilorini, Retno (2004) THE PERFORMANCE OF EARLY-AGE CONCRETE WITH SEAWATER CURING. Joumal of Coaslal Develolment, 8 (2). ISSN 14105217

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It is well known that concrete has been implemented for marine structures. Marine environment causes physical and chemical deterioration of concrete structures, thus, there is no doubt that the clurability 'tui@s an important role in concrete performance. Learning about the perfoftnance of early-age concrete is to stucly the maturity of concrete, which is a key of concrete durability where "Maturity Concept" attempts io pretlict the ievelopment of concrete properties as a function of time and temperalure of curin'g and -becomes un excellent indicator of in-place strenglh tlevelopment and quality from fresh to hardined concrete. It is a hypothesis for this research that the compressive strength of early-age concrete curerl by seawater is higher lhan the one cured by plain water' This reseqrch was contluited by using fivo methods, experimenlal method and analytical method. The experimental methocl investigatetl the compressive strength of concrete cylinders, with 7 days and 14 days seawater curing and plain water curing. Concrete compressive strength design, f',' is 22.5 Mpa, ancl varies with iater-cement ratio: 0.4,0.5, and a.6. After 7 days and l4 days of curing, the concrete cylinders were lested by compressive testing machine' Thi experimental results of this research showed that lhe compressive strength of 7 days and I4 days concrete specimens with seawater curing is higher than those cured by plain-water, about 2.56- S.|SUlor 7 tliys old specimens and 3.39-1t.87%for 14 days old specimens. The result also showed that the lower water-"irr"rt ratio, the higher concrete compressive strength would be' The analytical calculation also gave higher compressive strength to specimens cured by seawater, about 0.06-0.39'% for 7 elays olcl spicimens and 0. t t -0.33'%,for I4 days old specimens. The higher strength compressive of -concrete specimens with seawater curing is provided by the existence of calcium chloride in seawater and by high temperature of seawater. The analytical result of the "Maturity Concept" has given a good perfor^ai"e in preclicting the compressive strength of concrele very well veryfying the experimental 'reiults. The hypothesis o7 tnX research is proven, that both experimentally and analytically, the compressive sirength of7 days and 14 days old concrete specimens cured by seawater are higher than those cured by plain water.

Item Type: Article
Subjects: 600 Technology (Applied sciences) > 620 Engineering > 624 Civil engineering > Civil Engineering > Concrete
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Mrs Rikarda Ratih
Date Deposited: 24 Aug 2018 22:36
Last Modified: 24 Aug 2018 22:36

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