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Bond-slip behavior of the FRP bar-sea sand concrete …

Sea sand from the East China Sea was used as the fine aggregate. The fineness modulus of sea sand was determined to be 2.21 using the sieve analysis method [23].Crushed stones with a continuous gradation of 5–20 mm were used as …

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Durability study of seawater and sea-sand concrete under …

The mixture composition of concrete is shown in Table 4 with initially blended chlorides of 0.2 wt% corresponding to NaCl 7.72 kg/m 3 (relative to concrete). Here the high initial chloride blending was used to simulate the condition of directly using seawater and sea-sand in concrete mixing according to the properties of seawater and …

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Feasibility assessment and application of sea sand in …

The challenging issue of demand for sand in concrete can be addressed by exploring alternative materials. Mechanism sand [12], aeolian sand [13], waste foundry sand [14], construction demolition waste [15], industrial by-products (such as coal ash, aged clay tailings, copper tailings) [16], [17], [18], and sea sand [19] are among the …

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EVALUATION OF THE POTENTIAL OF SEA SAND AS AN ALTERNATIVE TO RIVER SAND

The authors identified better performances of concrete and mortar when river sand was fully replaced with washed sea sand. Ratnayake et al. (Ratnayake et al. 2014) evaluated the potential of sea ...

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Feasibility of using Waste Brine/Seawater and Sea …

The anti-corrosion property of fiber reinforced polymer (FRP) makes the concrete produced with marine wastes (waste brine after desalination) and resources (seawater and sea sand) a promising green …

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Development of a low-alkalinity seawater sea sand concrete …

Replacement of river sand and fresh water with seawater and sea sand for concrete production can effectively reduce the environmental burden caused by river sand mining and freshwater consumption. However, the chloride ions contained in seawater and sea sand can lead to severe corrosion of steel rebar.

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Desorption behavior and mechanism of chloride ions in fresh concrete …

Notably, sea sand was not originally used in the fresh concrete mixtures of type II from the concrete mixing plant, so half of the river sand was replaced with sea sand artificially. Since the main purpose of type II is to learn whether the practical concrete mixture with fly ash, mineral powder, and a water-reducing agent will influence the ...

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Benefits of using sea sand and seawater in …

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 …

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Chloride Analysis of Sea Sand for Making Concrete

Usage of sea sand for concrete development is the possible alternative for river sand and avoids the excessive sand mining which may cause ecological and environmental problems. Sea sand is not used in concrete, since it contains chloride ions which can corrode steel. In order to avoid the corrosion, the salt content of the sea sand …

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EXPERIMENTAL STUDY ON CONCRETE USING SEA …

This study is to experiment the suitability to use beach/sea sand as a substitute for river sand as fine aggregate for concrete. Keywords: Concrete, Sea sand and Fine aggregate.

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How to Test Sand Quality at Construction Sites for Concrete

It is a finer-grained sand found in the ocean, making it suitable for use in concrete construction. However, sea sand has an elevated chloride concentration, which can lead to corrosion and consequently cause harm to concrete structures. River sand is widely accessible and often used in construction. It has lower levels of impurities and …

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Sea Sand for Construction[Reality and Truth]

Sea sand contains chloride ions beyond the acceptable limit causes sever durability issues. Therefore, much attention is required when offshore sand is used in construction. The chloride content in the …

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Sea Dredged Sand for Concrete

A study was conducted by the authors to assess the possibility of using sea dredged sand from Singapore in concrete construction. Various combinations comprising normal sand, washed and unwashed sea dredged sand, potable water and seawater for mixing were considered. The properties of concrete made with washed and unwashed …

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Suitability Assessment of Alternative Sands for Concrete …

AbstractIn this investigation, four types of sands as alternatives to river sand, namely, crushed sand (CS), marine sand, fine recycled concrete aggregate (FRCA), and fine reclaimed asphalt pavement (FRAP), were studied for their potential for cement-...

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Enhancing the microscopic structure of seawater sea-sand concrete

However, seawater sea-sand concrete specimens show uniform pore volume percentage for the complete range of pore diameters. A prominent reduction in the total porosity of concrete specimens is observed after the application and increase of compression pressure. Compressed seawater sea-sand concrete specimens show …

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SEA SAND AS FINE AGGREGATE FOR CONCRETE …

Hence micro silica is used in sea sand concrete possesses higher compressive, split tensile, flexural strength than the conventional concrete. In our test programmes the specimens were casted and remoulded after …

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Research on the performance of seawater sea-sand concrete…

Seawater and sea sand concrete (SWSSC) refers to concrete prepared by replacing river sand and freshwater with sea sand and seawater. Sea sand has the advantages of low mud content, good grading, and excellent working performance, making it an ideal building material [6].As one of the earliest countries in the world to use sea …

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Seawater-mixed concretes containing natural and sea sand …

Seawater and sea sand concretes (SW-SS) have been undergoing evaluation as viable alternatives in concrete production. • This review critically evaluates the literature in the relevant research domain and summarizes the effects of salts in seawater and sea sand, on concrete properties.

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Study on sea sand as a partial replacement for fine …

Study on sea sand as a partial replacement for fine aggregate ... It also includes thedetermination of the strength of concrete with sea sand, as fine aggregate as partial replacement. 2. Materials and methods The sea sand samples were collected from Kuthenkuly (8.2162° N, 77.7803° E), Tirunelveli district of Tamil Nadu, India. ...

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Effects of Seawater and Sea-Sand on Concrete Properties: A …

Xiao J, Qiang C, Nanni A, Zhang K (2017) Use of sea-sand and seawater in concrete construction: Current status and future opportunities. Constr Build Mater 155:1101–1111. Article Google Scholar Yamazaki K (1974) Viewpoints on using sea sand in concrete as fine aggregates in Japan. Concr J 12(10):72–76

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Experimental Investigation of Sea Sand for Construction Purposes

Furthermore, sea sand concrete containing SCMs can not only improve the permeability and sorptivity of concrete but also reduce the use of OPC, leading to a significant reduction of CO2 emission.

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Experimental Investigations on the Properties of Epoxy-Resin …

This paper deals with the experimental studies conducted on the effects of using sea sand on the properties of polymer concrete modified using epoxy resin. The physical properties including workability, mechanical properties, and durability properties were evaluated as a function of sea-sand substitution. The results obtained behave as …

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Use of sea-sand and seawater in concrete construction: …

For sea-sand concrete, by using accelerated corrosion testing and changing the Cl − content in sea-sand, Dias et al. [94] showed that steel reinforcement corrosion became significant when the concentration of free Cl − in sea-sand reached …

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Development of admixtures on seawater sea sand concrete: …

In comparison to regular reinforced concrete, chloride ions and sulfate ions in seawater and sea sand could speed up the corrosion of steel bars in concrete and cause the volume expansion of steel bars, resulting in concrete cracking ( in Fig. 1).The negative contribution of chloride ions to concrete is dominant among the ions present in …

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Beach Sand in Concrete

Any concrete made with beach sand should be rejected. The chloride content will not be consistent, but reinforced concrete made with beach sand is proven by time to be lacking in durability. ... While there is historical evidence that mixing concrete with sea water has less detrimental effect than one would think, that is not particularly so ...

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Sea Sand Concrete- A Review on Current Status

The present paper provides comprehensive evaluation of utilization of sea sand in concrete and emphasises the need for further research on sea sand as fine aggregate in concrete. Key words: Sea ...

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Developing green and economical low-alkalinity seawater sea sand …

In recent decades, the rapid development in China and other developing countries has increased the demand for concrete materials, depleting freshwater and river sand resources and causing environmental issues (Liu et al., 2018; Hossain et al., 2016).To address these concerns, governments have implemented policies to ban river sand …

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Applicability and limitations of using seawater and sea sand …

Utilizing seawater and sea sand in concrete promotes sustainable development due to cost effectiveness, natural resource conservation, and societal acceptance [11]. However, such "eco-friendliness" may be at the expense of reduced performance of the resulting seawater sea sand concrete (SWSSC).

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Application of sea sand for 3D concrete

Di et al. [26] investigated marine sand from the Zhoushan Seas and determined 2652 and 1370.3 kg/m 3 apparent and bulk densities of marine sand with shell and mud contents of 0.23 % and 0.27 % ...