Analysis of the Damage to the Aeolian sand Concrete Surfaces Caused by Wind-Sand Erosion

Xue, Huijun; Xiang‐dong, Shen; Liu, Qian; Wang, Renyuan; Zheng, Liancun

doi:10.3151/jact.15.724

Cited by 27 publications

(4 citation statements)

References 23 publications

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“…The contradiction between the supply and demand of construction sand resources has become a major factor restricting infrastructure construction [1]. The desert area in China is 71.29 million km 2 , accounting for 7.4 % of the country's total area, with abundant aeolian sand resources [2]. The utilisation of aeolian sand as fine aggregates instead of river sand to prepare concrete cannot only solve the increasingly serious problem of desertification but also provide a solution to the shortage of construction materials, thereby achieving win-win results.…”

Section: Introductionmentioning

confidence: 99%

Influence of pore structure characteristics on the strength of aeolian sand concrete

Lakusic

2024

JCE

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To investigate the influence of the pore structure characteristics of aeolian sand concrete on the mechanical properties, macroscopic mechanical tests of aeolian sand concrete were performed under different conditions, and the influences of the water-cement ratio, sand ratio, and aeolian sand replacement rate on the compressive strength were analysed. The internal microscopic pore structure was characterised using scanning electron microscopy and nuclear magnetic resonance. The impact of pore structure parameters on compressive strength was determined by the grey relational entropy, and a pore structure-strength model was established.

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Section: Introductionmentioning

confidence: 99%

Influence of pore structure characteristics on the strength of aeolian sand concrete

Lakusic

2024

JCE

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“…Dune sand has an abundant global distribution and possesses the potential to serve as a valuable environmentally-friendly resource through proper utilization. 5 Considering availability, environmental sustainability, and economical efficiency, many investigations have reported on the possibility of using dune sand to prepare cementitious materials. [6][7][8] However, dune sand consists of ultra-fine particulates, characterized by improper gradation, high salinity, and smooth particle surface.…”

Section: Introductionmentioning

confidence: 99%

The effect of graphene oxide on dune sand cementitious composites reflected in enhancing freeze–thaw resistance: An experimental study

Wang

et al. 2023

Structural Concrete

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To advance the utilization of dune sand, a sustainable albeit flawed resource, for structural engineering, the incorporation of graphene oxide (GO) is suggested as a potential means for improving durability of dune sand cementitious composites (DSCC). In this study, DSCC samples with varying GO concentrations were prepared. The effect of GO on the freeze–thaw resistance of DSCC was then studied by freeze–thaw cyclic test and mechanical test. In addition, to elucidate the mechanism underlying the observed enhancement in freeze–thaw resistance due to GO incorporation, thermogravimetric, mercury injection, adsorption, and morphological analyses were performed. The experimental results showed that incorporating GO into DSCC can enhance its freeze–thaw resistance without compromising its mechanical properties. The weight loss and relative dynamic modulus of elasticity of the specimen with 0.06 wt% GO decreased by 92.83% and 64.96%, respectively, as well as the compressive strength increased by 22.76% after 150 freeze–thaw cycles compared with the control specimen. The enhancing effect of adding GO on the freeze–thaw resistance of DSCC was found to be attributed to the promotion of hydration and the control of internal structure. Notably, the modification of GO on the smooth dune and the reinforcement of GO on the interface between dune sand particles and cement matrix was identified, which may be the new evidence for testifying the GO enhancement on the freeze–thaw resistance of dune sand cementitious composites.

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“…Globally available aeolian sand can be converted into a green resource through appropriate processing and use [14,15]. Due to the scarcity of natural resources in recent years, a large number of researchers have examined the use of aeolian sand (AS) in concrete globally.…”

Section: Introductionmentioning

confidence: 99%

Impermeability and Durability of Self-Compacting Concrete Prepared with Aeolian Sand and Recycled Coarse Aggregate

Zheng,

Liu,

Han

et al. 2023

Materials

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Self-compacting concrete has seen extensive application in both engineering and construction. In order to save building resources, aeolian sand—recycled coarse aggregate self-compacting concrete (ARSCC) is created by partially substituting recycled coarse aggregates (RCA) and aeolian sand (AS) for natural coarse aggregates. For ten groups with different mechanical and durable properties, this study examined the effects of sulfate erosion, chloride penetration resistance, and related impermeability, as well as AS replacement ratios of 20%, 40%, and 60% and RCA replacement ratios of 25%, 50%, and 75% in ARSCC and a control group (A0-R0). According to the study’s findings, after sulfate attack, the highest relative dynamic elastic modulus and corrosion resistance factor were obtained with the 20% AS replacement ratio and 50% RCA replacement ratio (A20-R50). The highest impermeability grade and lowest electric flux were obtained with the 20% AS replacement ratio and 25% RCA replacement ratio (A20-R25). X-ray diffraction (XRD) and mercury intrusion porosimetry (MIP) revealed that the addition of aeolian sand and recycled coarse aggregates improved the pore structure of the SCC and increased the densification of the self-compacting concrete, particularly following sulfate attack. This study highlights the importance of recycled aggregates and aeolian sand in engineering applications and the sustainable growth of the concrete industry, both of which support resource conservation and environmental protection.

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Analysis of the Damage to the Aeolian sand Concrete Surfaces Caused by Wind-Sand Erosion

Cited by 27 publications

References 23 publications

Influence of pore structure characteristics on the strength of aeolian sand concrete

Influence of pore structure characteristics on the strength of aeolian sand concrete

The effect of graphene oxide on dune sand cementitious composites reflected in enhancing freeze–thaw resistance: An experimental study

Impermeability and Durability of Self-Compacting Concrete Prepared with Aeolian Sand and Recycled Coarse Aggregate

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