2024年2月1日 This finding suggests that more water-reducing agents are required to make seawater concrete workable. Compared to river sand concrete, studies have indicated that sea sand is used in concrete instead of river sand by a ratio of 20% to 40% [84].
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2017年11月30日 This paper has presented a critical review of existing and ongoing research on the use of sea-sand and/or seawater as raw materials for concrete to replace river sand and
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2017年11月30日 The direct use of both sea-sand and seawater without desalting in concrete production is particularly attractive for marine and coastal projects, for which the supplies of
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2019年8月29日 Workability and mechanical properties of the seawater sea–sand concrete (SWSSC) were similar to those of ordinary concrete made with freshwater and river sand, which had a wide application in ...
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2020年12月7日 With limited availability of freshwater globally, materials engineers have explored using sea sand and seawater in concrete production. A paper in the Journal of Materials in Civil Engineering, “Properties and Application of Sea Sand in Sea Sand–Seawater Concrete,” written by T. Dhondy, A. Remennikov, M.ASCE, and M. Neaz Sheikh, investigates variations in the
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2020年12月1日 The wide implementation of fiber reinforced polymer (FRP) in seawater sea-sand concrete (SWSSC) structures can help solve the durability problem of infrastructure in marine environments and reduce ...
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2018年6月1日 Sea sand, a material that may be utilized for building as well as concrete components like paver blocks, is an alternative to river sand [7]- [9] Because sea sand contains salt, replacing it with ...
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2020年5月5日 In this background, as a reasonable solution to the issue, the use sea sand for construction is encouraged. There are more advantages that can be achieved with the use of sea sand. Advantages of Sea Sand. Sea sand particles are rounded or cubical, same as river sand. Grading of the sea sand is finer than the river sand.
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1 天前 obtained from river streams and banks. It is generally white-grey. Unlike pit sand, the grains of river sand is smooth, rounded and of fine quality. Hence, it is used globally for a broad range of construction purposes such as plastering. Sea Sand: Sea sand (also known as offshore sand) refers to the sand eroded by
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2017年11月30日 Request PDF Use of sea-sand and seawater in concrete construction: Current status and future opportunities This paper presents a critical review of existing studies on the effects of using sea ...
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2020年9月29日 Contradictory results have been published on the effect of sea sand and seawater in concrete as opposed to conventional river sand and freshwater. The majority of studies show equivalent, if not better, results when sea sand and seawater are used in concrete, although some studies concluded otherwise.
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2023年12月1日 Also, the effects of salts from seawater, sea sand, and coral aggregates, on the long-term durability of seawater-mixed and sea sand (SW-SS) concretes, are critically reviewed. In conclusion, the perceptions, challenges, and possible niche applications in the use of SW or SS concretes are summarized. 2. Seawater-mixed and sea sand concretes2.1.
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2020年12月23日 Growing global concern about scarcity of freshwater resources and depletion of river sand motivated researchers to explore the possibilities of using suitable alternatives. Using seawater and sea-sand in concrete production is an example. Concrete, which is the most wildly used construction material ...
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2022年3月23日 ] used WFS as a partial alternative for natural river sand in concrete in proportions of 0, 10, 20, 30, and 40%. Results indicate that concrete compressive strength is
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2024年3月1日 River sand is commonly used in the concrete mix. With a lower clay and silt content in river sand, there is more control over the workability and quality of the concrete and mortar produced. However, the excessive mining of river sand led to environmental degradation. Read the complete article to learn about river sand and its best alternative.
More2020年1月6日 The main types of sand used in construction range from concrete sand to pit sand, natural or river sand, manufactured sand (M-sand), utility sand, and fill sand. These types of sands have unique properties that
More2020年5月5日 In this background, as a reasonable solution to the issue, the use sea sand for construction is encouraged. There are more advantages that can be achieved with the use of sea sand. Advantages of Sea Sand. Sea sand particles are rounded or cubical, same as river sand. Grading of the sea sand is finer than the river sand.
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2018年12月1日 sibility of using river sand in concrete production. ... In this method, hyper super plasticizer was u sed to improve the . mechanical properties of t he mixture with a replacement ratio of.
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2015年11月28日 River sand is used in the construction industry mainly for concrete production and cement-sand mortar production. River sand is obtained by dredging from river
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2019年8月29日 This growth has depleted natural river sand and freshwater sources. The use of sea sand and seawater in concrete can provide sustainability to natural resources, while improving the mechanical properties of concrete. The corrosion of steel-reinforcement is inevitable with the use of sea sand seawater concrete.
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2014年1月1日 ABSTRACT We investigated the suitability of sea sand for concrete production. Our aim is to compare compressive strength, textural properties and salt contents with respect to grade 30 concrete ...
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2024年4月5日 The increasing demand for river sand, driven by infrastructure development, poses environmental challenges. The study aims to address the depletion of river sand by integrating sea sand as a fine aggregate in the production of Self-Compacting Concrete (SCC) through a Systematic Literature Review. Furthermore, it includes an in-depth bibliographic
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• To identify suitable river sand substitutes for practical use in concrete production and cement sand mortar production • To ... – Second, river sand dredged from river estuaries close to the sea may be contaminated with salt thus causing the concrete/mortar produced to have high chloride content.
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