Thus, leveraging seawater and sea sand for marine concrete production emerges as a pivotal focus area for future marine engineering. Numerous studies have investigated the impact of seawater on mainstream concrete materials, i.e., ordinary Portland cement (OPC), and indicated that the use of seawater in concrete mixing led to reduced ...
This paper aims to comprehensively review seawater/sea sand concrete, covering aspects such as water absorption and permeability, corrosion resistance, sulfate resistance, …
The FRP-reinforced seawater sea sand concrete (FRP-SWSC) utilizes a chloride corrosion-free FRP bars and opens a new avenue for concrete production with the direct employment of locally original ...
The paper shows the promising use of sea sand for additive technologies in construction. The use of sea sand reduces the setting time of the concrete mix and increases the initial strength compared to conventional quarry construction sand. A comparative analysis of the characteristics of sea and quarry sands was performed.
To address this challenge, seawater sea-sand concrete [also seawater sea-sand ECC (SS-ECC)] reinforced with non-corrosive reinforcements [e.g., fiberreinforced polymer (FRP) composites] was ...
Beach sand is laden with salts, chloride and sulphates are very harmful elements leading to deterioration of reinforcement and concrete. This calls for cleaning the sand incurring huge costs. In Middle East sand is mined …
The majority of studies show equivalent, if not better, results when sea sand and seawater are used in concrete, although some studies concluded otherwise. This paper investigates the variations in the chemical and physical …
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 concrete is limited to 0.4% by …
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 structural material which can be a sustainable solution to fresh water and river sand scarcity in marine and offshore construction. To evaluate the feasibility of using …
Urbanization and growing populations have accelerated the development of human infrastructure, as well as the reliance and demand on concrete and steel bars [1].River sand and freshwater are typically used in the making of concrete [2].In some coastal cities and island areas, river sand for construction is in short supply due to the depletion of freshwater and river sand …
ReviewUse of sea-sand and seawater in concrete construction: Current status and future opportunities
For specific applications, sea sand can be used in specialized concrete mixes designed to handle its unique properties: Marine Structures: Concrete used in marine …
Seawater sea-sand concrete (SSSC) refers to concrete prepared with seawater and/or sea-sand instead of freshwater and/or river-sand. It generally sets faster due to the exist of chloride but demonstrates slightly lower long-term strength compared to ordinary concrete due to the effect of the sulfate or impurities [3], [4].The effects of seawater and sea-sand on the long …
Sand is often utilized as a fine aggregate in concrete, contributing 22 to 62% of the total mass. The quantity and features of sand in concrete have an impact on its workability, mechanical characteristics, and durability. Effective replacements are needed as natural silica sand becomes scarcer. By incorporating these by-products into concrete, landfill discharge …
Fine aggregate, sea sand, minerals, concrete, strength 1. INTRODUCTION Fine aggregate is one of the important constituents of concrete and mortar in construction industry (Mehta and Monteiro, 1993). River sand is becoming a scarce material. Sand mining from our rivers has become objectionably excessive. It has
The microscopic tests of modified sea sand cement mortar were carried out by SEM scanning electron microscope to explore the principle of macro changes.Through this experiment, it is convenient to lay a foundation for the better use of cement mortar and concrete prepared by sea sand instead of river sand in the future, but also help to save ...
interest. Desalting of sea-sand and sea water leads to extra construction cost. So in this project we adopted the usage of sea-sand and sea water without desalting and to study its effect on compressive strength of concrete. Direct use of sea-sand and sea-water in concrete productions is particularly implemented for coastal and marine projects.
types, mixed sea sand and river sand (1:1) compared to river sand and quarry dust. Crushing strength vs grain size of the different fine aggregates. Journal of Geological Society of Sri Lanka Vol ...
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 ...
Dr. Tran Tuan Hiep (Vietnam), [4] The strength of cement concrete using sea sand is less than traditional cement concrete using river sand from 4 - 10%. Strength of cement concrete using sea sand can reach 30 – 35 N/mm2 meeting requirements of concrete for construction of highway, the coastal protection works and islands.
The use of sea sand concrete in China can be traced back to the construction of the Sanshandao gold mine in Shandong in the late 1980 s, which is still in service [10]. With the economic development and increasingly serious resource problems, in 2019, Chinese sea sand mining output will be more than 450 million tons, and the proportion of sea ...
Reinforcing seawater sea-sand concrete (SSC) with basalt fiber reinforced polymer (BFRP) bars can adequately resolve chloride corrosion issues. However, the multiple-element ions in seawater and sea sand can increase the concrete alkalinity and accelerate the degradation of BFRP bars. This study aims to enhance the durability performance of ...
In this experiment, standard concrete and seawater sea sand concrete with varying percentages of GGBS were prepared as cubes. Each specimen (150 mm × 150 mm × 150 mm) was built using a cement to water ratio of 0.45. Sea water and sea sand were substituted for fresh water and regular sand, respectively, for SWSSC. The cubes were cast ...
it is desirable to obtain cheap, environmentally friendly substitutes for river sand that is preferably sea sand. The Land Reclamation and Development Board (Sri Lanka) plans to popularize the use of sea sand as an alternative to
And Kaushik et al. (1995) also found that the compressive strength would be decreased by 13% at 28 days when using seawater. Most studies agreed that seawater or/ and sea-sand concrete had a ...
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 …
In this paper, the most important observations of the effect of seawater (SW) and/or sea-sand (SS) on the properties of concrete are presented and critically reviewed. Concrete is responsible for about 9% of global annual …
Sea sand Concrete: 0.22–0.30: 3.0: Cement, 20–25% Slag, 0–8% Fly ash: Superplasticizer: Lower or comparable mechanical properties depending on the properties of sea-sand and the content of impurities, similar resistance to chloride diffusion, carbonation, water penetration: 0.27–0.35: 2.0: Cement, 30% Metakaolin: