alexa The Performance of Early-Age Concrete with Seawater Curing | OMICS International | Abstract
ISSN: 2473-3350

Journal of Coastal Zone Management
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Research Article

The Performance of Early-Age Concrete with Seawater Curing

Abstract

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 durability takes an
important role in concrete performance. Learning about the performance of early-age concrete is to study the
maturity of concrete, which is a key of concrete durability where “Maturity Concept” attempts to predict the
development of concrete properties as a function of time and temperature of curing and becomes an excellent
indicator of in-place strength development and quality from fresh to hardened concrete. It is a hypothesis for
this research that the compressive strength of early-age concrete cured by seawater is higher than the one
cured by plain water.
This research was conducted by using two methods, experimental method and analytical method. The
experimental method investigated the compressive strength of concrete cylinders, with 7 days and 14 days
seawater curing and plain water curing. Concrete compressive strength design, f’c, is 22.5 MPa, and varies
with water-cement ratio: 0.4, 0.5, and 0.6. After 7 days and 14 days of curing, the concrete cylinders were
tested by compressive testing machine.
The experimental results of this research showed that the compressive strength of 7 days and 14 days
concrete specimens with seawater curing is higher than those cured by plain-water, about 2.56-5.25% for 7
days old specimens and 3.39-11.87% for 14 days old specimens. The result also showed that the lower watercement
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 days old specimens and 0.11-
0.33% for 14 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 performance in predicting the compressive
strength of concrete very well veryfying the experimental results. The hypothesis of this research is proven, that
both experimentally and analytically, the compressive strength of 7 days and 14 days old concrete specimens
cured by seawater are higher than those cured by plain water

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