Study on the Properties of Sea Sand Concrete with Fly Ash

Jiang, Yi; Liu, Jun Zhe; Sun, Wu; Zheng, Chao; Wu, Si Yun

doi:10.4028/www.scientific.net/amr.1065-1069.1854

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Although seawater and sea sand resources are abundant, their extraction poses challenges due to the presence of harmful substances. These ions can cause damage to reinforced concrete structures, ultimately impacting the durability of concrete [5,6]. To meet the production needs of the construction industry, many countries opt to use desalinated sea sand as a substitute for river sand in construction.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance Study of PVA Fiber-Reinforced Seawater and Sea Sand Cement-Based Composite Materials

Diao,

Cao,

Michel

et al. 2024

Preprint

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Due to the swift progress in the construction sector, there is a global concern about the potential scarcity of river sand and freshwater resources. The development of new construction materials is considered an inevitable trend for industry growth. PVA fibers, known for their strong corrosion resistance, cost-effectiveness, and high toughness, have the potential to enhance the corrosion resistance and seismic performance of structures in marine environments. However, their mechanical properties and durability in the seawater and sea sand environment are not well understood. Therefore, the investigation of the impact of seawater and sea sand on the mechanical properties and durability of PVA fiber-reinforced cement composites is considered crucial. A mechanical performance analysis of PVA fiber-reinforced seawater and sea sand fiber cement composites was conducted in this study. PVA fiber volume fractions of 0%, 0.75%, and 1.5%, cement composite matrix strength grades of C30 and C50, and curing periods of 28 days, 90 days, and 180 days were examined, investigating their influence on the bending toughness of PVA fiber-reinforced seawater and sea sand cement composites. Material failure modes, crack propagation patterns, and load-deflection curves were obtained through experiments, and various bending toughness indices of the beams were calculated. Specific conclusions include the influence of different seawater concentrations at different curing periods on the initial cracking load and bending toughness of materials with varying strength grades and fiber content; the formulation of calculation formulas for predicting bending strength and corresponding deflection, which fit well with the experimental results; and the development of a calculation model for the bending toughness index of PVA fiber-reinforced seawater and sea sand cement composites, providing an effective prediction of material bending toughness.

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Section: Introductionmentioning

confidence: 99%

Mechanical Performance Study of PVA Fiber-Reinforced Seawater and Sea Sand Cement-Based Composite Materials

Diao,

Cao,

Michel

et al. 2024

Preprint

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“…Several admixtures and pozzolanic additives were also tried to mitigate the dissolving of the chloride salts of sea sand and also yielded positive results [26]. A review of recent literature works showed sufficient studies on polymer concrete and sea-sand concrete [27,28,29]; however, no study attempted to test the effect of simultaneously using polymer and sea sand on the properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Properties of Epoxy-Resin-Bonded Cement Concrete Containing Sea Sand for Use in Unreinforced Concrete Applications

Natarajan

Pillai²,

Sophia

2019

Materials

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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 strong evidence for the feasibility of using sea sand as fine aggregate to solve the problem associated with the exhaustion of natural aggregates when used in combination with epoxy polymer. A clear understanding of the behavior of polymer concrete with sea sand as aggregate was obtained through some preliminary investigations. The test results showed a significant improvement in the compressive and flexural strength due to the sea-sand substitution in polymer concrete. Resistance to the water intrusion was also improved for the concrete mixes due to the inclusion of epoxy resin. The quality and the integrity of the concrete were also improved,as evident from the SEM analysis and infrared (IR) spectroscopy, and the results function as solid basis for the use of sea-sand polymer-modified concrete for practical applications. Results also show that 15% replacement of fine aggregate by sea sand in air-cured polymer concrete exhibited enhanced strength and durability properties; thus, the produced concrete can be an effective material for unreinforced concrete applications.

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Behavior of square pultruded GFRP tube filled with seawater and sea sand concrete beam

Zhang

Zhao

Zhu

et al. 2022

Composite Structures

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Study on the Properties of Sea Sand Concrete with Fly Ash

Cited by 7 publications

References 2 publications

Mechanical Performance Study of PVA Fiber-Reinforced Seawater and Sea Sand Cement-Based Composite Materials

Mechanical Performance Study of PVA Fiber-Reinforced Seawater and Sea Sand Cement-Based Composite Materials

Experimental Investigations on the Properties of Epoxy-Resin-Bonded Cement Concrete Containing Sea Sand for Use in Unreinforced Concrete Applications

Behavior of square pultruded GFRP tube filled with seawater and sea sand concrete beam

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