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

Abstract

The study simulated the Aeolian sand concrete damage process under wind-sand erosion using a sand-bearing wind-sand erosion test device. Then, different wind parameters were selected to study their damage failure influences on Aeolian sand concrete surfaces, and an orthogonal test was carried out for three factors: wind speed, sand carrying capacity, and angle of attack. The significant level and variance contribution rate of the angles of attack were the largest. The test results indicated that the damage failure arising from wind-sand erosion could be divided into three stages: the accelerated development stage, attenuation stage, and stabilization stage. During the accelerated development stage, the damage failure of the concrete surfaces was found to be relatively large, and obvious erosion pits were produced following the erosion. With the increases in action times, the process gradually developed into the attenuation stage, and then finally into the stability stage. The test results revealed that the damage failure of the Aeolian sand concrete surfaces which arose from the sand flow with 200 to 300 μm diameter sand was relatively serious.

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

“…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.…”

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

“…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.…”

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

“…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.…”