Influence of Seawater on the Strength of Rc Beams and Corrosion Behavior of Steel

Lejano, Bernardo A.; Roxas, Cheryl Lyne C.

doi:10.21660/2018.42.7158

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The freshwater was targeted to be replaced by another alternative to utilize its functionality in concrete manufacturing. Many types of disposed water were suggested to be investigated by the researchers, for example, treated and untreated wastewater (WW), fertilizer factory WW, textile factory WW, sugar factory WW, service station WW (preliminary, secondary, and tertiary treated) WW, salty water, seawater [11], oily water, stone slurry WW, sludge WW, car wash station WW, and many other types [3,4,12]. From the above short list of different water types, the treated wastewater types are the most convenient, sustainably achievable, and globally can be afforded both technically and financially.…”

Section: Introductionmentioning

confidence: 99%

Concrete Behavior Using Recycled Wastewater

Nabil I. Elsayed

2023

GEOMATE

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Concrete is one of the world's most essential and most widely used civil engineering applications, making it the reason to continue the need for development by implementing more sustainable methods. Water is one of the fundamental pillars in its manufacture and its acquisition of the required mechanical and physical properties through the applicable mixing ratios. So far, tap water is mainly used in this process, whether in preparing components, mixing, or even after hardening during the curing treatment process. However, this may become a burden in the future due to the increasing scarcity of fresh water, where regions suffer due to population growth, climatic changes, and poor management of water systems. This paper deals with the use of tertiary treated wastewater (recycled water) treated by the Jebel Ali sewage treatment plant in Dubai-UAE as an alternative in the concrete industry during the mixing and curing treatment phase by testing the extent of this effect on the mechanical properties of concrete, such as compressive, flexural, and tensile strength from a general perspective. The results show a significant improvement in the compressive strength observed according to the cubes crushing test, reaching 33% after seven days, 70% after 14 days, 56% after 21 days, and the endurance tensile strength test improved by 4% after 28 days in comparison with the normal concrete. The results show that the recycled wastewater concrete performed closer to, if not better than, the normal concrete in mechanical and physical properties.

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Section: Introductionmentioning

confidence: 99%

Concrete Behavior Using Recycled Wastewater

Nabil I. Elsayed

2023

GEOMATE

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“…Thus the use of seawater in concrete production is worthy to investigate. Concrete with seawater as ingredient may be possible to use in structural application [5].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength of Concrete With Seawater and Powdered Eggshells as Partial Replacement for Cement

Lejano¹

2020

GEOMATE

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In efforts to generate sustainable concrete, alternative mixing constituents are used. In this study, the use of powdered eggshells as partial cement replacement and seawater as freshwater replacement were explored. The experiment consisted of two phases. First phase was the investigation of 50-mm mortar cube specimens to determine the effect on the compressive strength of mortars with 5% cement replacement with powdered eggshells that were heated at varying temperatures and duration. In the preparation of powdered eggshells, the heating duration was varied at 3, 6, and 12 hours while the temperature was varied at 100 O C and 200 O C. Based on the compressive strength test results, it was determined that heating of powdered eggshells at 100 O C for 12 hours achieved the highest compressive strength. Results of Scanning Electronic Microscope (SEM) showed that there was formation of fiber-like structures for mixes with powdered eggshell. This is believed to be the cause of increase in strength. For the second phase, the better heating method of powdered eggshells that was determined from the first phase was adopted and was used as mixing guide for the cylindrical concrete specimens. The three water-cement ratios used in making the concrete cylinders were 0.4, 0.5 and 0.6. All water-cement ratios of concrete cylinders cured for 28 days exhibited increased compressive strength as powdered eggshells were added as partial cement replacement. It was also determined that the compressive strength further increased when both seawater and powdered eggshells were utilized in concrete. An increase up to 36.4% was observed.

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Fly ash in concrete using sea water – A review

Rameshkumar

Muzammil

2020

Materials Today: Proceedings

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Influence of Seawater on the Strength of Rc Beams and Corrosion Behavior of Steel

Cited by 4 publications

References 6 publications

Concrete Behavior Using Recycled Wastewater

Concrete Behavior Using Recycled Wastewater

Compressive Strength of Concrete With Seawater and Powdered Eggshells as Partial Replacement for Cement

Fly ash in concrete using sea water – A review

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