Experimental Study on Foci Development in Mortar Using Seawater and Sand

Wang, Yajun; Zhang, Chuhan; Wang, Jinting; Xu, Y.X.; Jin, Feng; Wang, Youbo; Yan, Qiushi; Liu, Tao; Gan, Xiaoqing; Zhan, Xianxu

doi:10.3390/ma12111799

Cited by 6 publications

(2 citation statements)

References 21 publications

(21 reference statements)

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“…However, the exhausting consumption of fossil minerals hindered the general application of sand or gravel compaction piles. The recyclable think was borrowed from the materials sciences and the mechanical performance in engineering cases showed the precise advantages [1][2][3]. The diverse sources of the particle materials spread the application of the aggregate columns in the soil foundation cases [4].…”

Section: Introductionmentioning

confidence: 99%

A novel process on recyclable particle materials used for aggregate columns

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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The study focused on the creative development of aggregate column materials and technologies. The seawater (SW) and alkaline agents (AA) were invited to create the recyclable particle materials (RPMs) that were used for the construction of the aggregate columns in the marine environment. The building solid waste (BSW) was utilized to produce the fine powder the chemical activity of which was restored with the help of AA and marine processes. The created products in the study were the RPMs that were also cured in the marine environment. The mechanical and chemical properties were investigated with comprehensive approaches including UCT (uniaxial compression tests), EDS (Energy Dispersive Spectrometer), SEM (Scanning Electron Microscopy), and XRD (X-ray Diffraction). The investigation on the mechanical and chemical properties of the RPMs was carried out at three ages inclusive of 8-day, 49-day, and 583-day. The results from UCTs reported that the UCS (uniaxial compression strength) of RPMs reached 7.29 MPa at 583-day age even in the marine environment. EDS analysis detected the predominant element of RPMs and it was guaranteed that Al, Ca, and Si developed continuously with the age accumulation. Based on XRD and SEM exploration, the principal hydration products and compounds of RPMs used in the aggregate columns included C-S-H, C-A-H, C-A-S-H, N-A-S-H, and CaCO3. Particularly, the salt complexes generated in RPMs filled compactly the microscopic pores of RPMs, which resulted in its densified framework.

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Section: Introductionmentioning

confidence: 99%

A novel process on recyclable particle materials used for aggregate columns

Wang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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“…The work of Wang et al [ 1 ] reported that the application of seawater and sea sand was a promising choice for marine structure construction. Their work also indicated that the cement-matrix materials using seawater and sea sand could offer adjustable performance by composition optimization.…”

Section: Introductionmentioning

confidence: 99%

A Promising Mortar Produced with Seawater and Sea Sand

2022

Self Cite

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The aim of the study is the deep understanding of the essential reactivity of the environmentally friendly mortar by which its applicability can be justified. Created in the study was the environmentally friendly mortar, which helped relieve the increasing requirements on conventional building materials that are produced from exhausted freshwater and river sand nowadays. Seawater (SW) and sea sand (SS) collected from the Eastern Seas of China were used to produce the mortar at various ages, including 10-day, 33-day, and 91-day. Both the curing and working conditions of the mortar were natural marine ones. The physicochemical-mechanical behaviors were investigated using uniaxial compression tests (UCTs), Energy Dispersive Spectrometer (EDS), X-ray Diffraction (XRD), and thermal-field emission scanning electron microscopy (SEM) analysis to understand the essential reactivity of the mortar with age accumulation. The results indicated that hydration products and favorable components were generated promisingly in the mortar: the C-S-H (xCaO·SiO2·zH2O) development was certainly achieved in the critical environment during the curing and working period; the extensive generation of C-A-S-H (CaO·Al2O3·2SiO2·4H2O) helped densify the C-S-H grid, which caused the promising development of the uniaxial compression strength (UCS); the framework porosity of the mortar was restrained effectively due to the development of Friedel’s salt that re-bonded the interfacial cracks between SS and the hydration products with the age accumulation in the critical environment. Consequently, UCS and the resistance against damage of the mortar showed increasing behavior even in the critical environment. The study established Friedel’s salt working models and strength and damage models to interpret the physicochemical reactivity of the mortar as: the source of the strength and toughness was the proper polymerization between the native saline components and the hydration product mixture generated throughout the production, curing, and application without the leaching phenomenon. The novel models and interpretation of the physicochemical reactivity ensured the applicability of the mortar produced with SW and SS in the critical environment.

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Incorporating sea sand into self-compacting concrete: a systematic review

Sindhurashmi,

Nayak,

Adesh

et al. 2024

Discov Appl Sci

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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 analysis of relevant literature using VOSviewer to generate network visualizations of author-co-citation and country-wise citations. The article offers diverse options for sustainable solutions to mitigate environmental impacts while meeting infrastructure demands. 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 methods like PointRend and neural networks to study the properties of SCC utilizing sea sand. Subsequently, the study emphasizes the need to address river sand shortages in infrastructure development and provides insights for further research on enhancing the properties of SCC with sea sand.

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Experimental Study on Foci Development in Mortar Using Seawater and Sand

Cited by 6 publications

References 21 publications

A novel process on recyclable particle materials used for aggregate columns

A novel process on recyclable particle materials used for aggregate columns

A Promising Mortar Produced with Seawater and Sea Sand

Incorporating sea sand into self-compacting concrete: a systematic review

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