To adequately develop the application of marine resources for island construction and effectively promote the sustainability of industrial resources, this paper investigates the feasibility of using seawater and coral or sea sand as replacements for freshwater and river sand in alkali-activated mortars (AAMs) containing ground blast …
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The use of sea sand and seawater in concrete can provide sustainability to natural resources, while improving the mechanical properties of concrete.
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Manap et al. (2016) found that the strength of bricks made from dredged sediment exceeds the strength of ordinary bricks. Sea sand can be used as a smooth aggregate substitute because it has a ...
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Desalination technologies have been shown to require considerable amounts of energy [37] and generate greenhouse gas (GHG) emissions. However, the use of environmentally friendly desalination technologies can minimize environmental issues, including climate change, and ultimately help create a sustainable environment [38], …
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Mainly contain for the state-of-the-art technology measure of villaumite in extra large sand both at home and abroad: extra large sand fresh water flush method, reinforcing steel bar corrosion inhibitor method, reinforcing bar plating method, concrete proportioning optimized method etc.Wherein extra large sand fresh water flush method is the method commonly …
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In order to directly apply seawater and sea sand in construction without desalination, a new type of circular concrete-filled steel tube (CFST) encased …
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Step 3: requirement of pre- or post-treatment technologies with given technologies. • Step 4: durability of the treatment technology. • Step 5: mobility of the treatment units. The ranking of each step depends on the ranking of the other steps and the quality of effluent is affected by the evaluation in separate step: •
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The water to be purified slowly sinks through the sand of the sand filter, leaving the dirt particles from the water behind in the fine pores of the sand. This filter technology is especially suitable for pre-filtration of disinfection equipment, preparation for micro- and ultra-filtration, recirculation systems, rinse water processes ...
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The sand column was prepared by packing the dry sea sand into a sterile 300 ml polyvinyl chloride (PVC) syringe with a diameter of 5 cm. For each sand column, 380 g of sea sand was added to the syringe and compacted via vibration until a height of 12.5 cm was reached, at which point the sand column's density was ∼ 1.54 g/cm 3.One …
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Water treatment can be conventional, consisting of primary and/or secondary treatment stages with microplastics removal efficiency as high as 99% (Carr et al., 2016), while it also concentrates microplastics for discharge (Murphy et al., 2016).Pre-treatment may precede primary treatment and it usually consists of coarse screens, grit chambers …
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The treatment of sand grains with Si/FDTS resulted in a lower sliding angle of 9.5°, imparting self-cleaning capabilities and higher hydrophobic efficiency. The modified sea sand grains demonstrated excellent water holding and storage capabilities in long-term experiments, which could be harnessed to improve agriculture in arid regions.
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The high magnetic field intensity and mineral magnetic differences were the critical factors influencing the magnetic separation of quartz from sea sand. The S-HGMS technology achieved effective pre-concentration of quartz from sea sand, reducing the handling capacity and providing a high-quality material for subsequent quartz refinement …
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The UK was the pioneer country to use desalted sea-sand as fine aggregate in concrete [10].In the 1960s, British experts conducted a series of studies on the use of sea-sand as a raw construction material [10], [11], [12], [13].Over 21 million tonnes of sea-sand and gravel was extracted annually around the coast of England and Wales …
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The project's goal is to increase the sustainability of fresh water and M-sand by using seawater and sea sand in concrete and to improve concrete strength by using varied amounts of GGBS with cement. With the use of saltwater sea sand concrete, corrosion of steel reinforcement is imminent. FRP is thus utilized in concrete as …
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The ocean, also known as the blue territory, has abundant resources, especially oil and gas (Watson, 2020).Offshore oil production contributed around 30% of the overall production in 2019 (Yacovitch et al., 2020; Kaiser, 2020).Produced water (PW), which represents the largest-volume byproduct in oil and gas production operations on …
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After nearly 10 years of development, port engineering has achieved fruitful results, especially the progress of soft foundation treatment technology.
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Section snippets Freshwater resources in China. The total amount of freshwater resource in China is 2.7 × 10 12 m 3.As shown in Fig. 1, the annual water supply capacity has been stabilized around 6.0 × 10 11 m 3 /year [3], while the national population and economy is growing in a linear trend over the last decade and expanding at an …
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Freshwater flushing is the mainstream technology for sea sand desalination; however, the consumption of large amounts of fresh water poses a great threat to water resources. To address this challenge, sea sand concrete reinforced with non-corrosive reinforcements has been suggested as a solution (Huang et al., 2021).
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A paper in the Journal of Materials in Civil Engineering compares the chemical and physical properties of sea sand from nine locations and its use in concrete …
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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 …
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Scarcity of fresh drinking water has become a major concern in various parts of the world recently. Therefore, this study aimed to develop a sustainable polymer (polypropylene) and carbon (activated carbon from coconut shell) based water treatment filter. The filter was made by integrating polypropylene nonwoven fabric on the top of a …
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Therefore, it is particularly important for the application of seawater and sea sand in coastal buildings or civil facilities to understand the influence of admixtures on the hardening performance of seawater and sea sand concrete and the corrosion effect of …
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It focuses on assessing the durability of SCC incorporating sea sand through real-time monitoring with the Internet of Things (IoT) and employing artificial intelligence …
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The petroleum industry produces a large amount of wastewater, known as produced water (PW), during oil production and processing. This PW contains hazardous organic and inorganic components that can harm the environment. Conventional treatment methods have been used to purify PW, but they do not meet environmental regulations, …
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Sea sand–seawater concrete had a high early compressive strength at 7 days and remained slightly higher than conventional concrete at 28 days. The …
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This study proposes an innovative method of processing sediment as a supplementary cementitious material, thereby promoting the development of sustainable …
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Washing sea-sands and the process involved leads to extra cost in making concrete. Furthermore, fresh water is used for washing which is not environmentally friendly. To tackle these limitations, researchers started to work on directly using sea-sand without desalting as well as seawater in concrete.
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Most existing reviews discuss OCDC and OS separately, but it is concluded that the choice of treatment methods can be mutually referenced. Therefore, a comprehensive overview of the treatment technologies for hazardous solid wastes generated during both petroleum drilling and production is provided, aiming to inspire readers and contribute to the further …
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The lack of river sand has led to the use of sea-sand and crushed stone fines in many countries, with the use of sea-sand in the UK being an example [4]. More than 90% of the world's dredged sea-sand has been used as a raw material in the construction industry, with over 45% of the dredged sea-sand being used as fine …
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In short, RO desalination, which itself is a 4 to 5 times more energy-efficient technology than commonly used thermal processes, is considered nearly 8–10 times more energy intensive when compared with traditional water treatment technologies applied on surface water sources such as, lakes or rivers [108].
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