Most of the small-arch-shed-recycling machines in China use manual disassembly and manual recycling, with low recycling efficiency and low mechanization. Therefore, this paper designs a small recovery machine for arch sheds, greatly improving the efficiency of the recycling of arch sheds, which can realize the lifting and collection of the arch shed rod and orderly recycling of the shed film. By performing univariate experimental studies in the field, on the basis of field experiments, we carried out an experimental analysis with machine speed and different soil moisture contents as the influencing factors and took the removal rate of the shed rod, the removal rate of the shed film, and the damage rate of seedlings as the test indexes. The test results show that the optimal parameter combination is a travel speed of 1.1 m/s, at which the operation effect is the best. The results show that under the optimal operation effect, the removal rate of the shed rod was 95.72%, the removal rate of the shed film was 98.63%, the seedling injury rate was only 2.11%, and the removal rate of the shed rod was only 4.01%, which met the requirements of the recovery operation of the arch shed and means that this approach is conducive to the recycling of the arch shed materials and the realization of sustainable development. In actual operation, the parameters should be adjusted according to the actual situation in the field to meet the different recovery needs of arch sheds.

The experimental research elaborated by Rithy Domphoeun and Amin Eisazadeh (2024) delves into exploring the effect of Rice Husk Ash (RHA), Lime (L), and Coir Fiber (CF) on the engineering properties of laterite soil when used as reinforcement materials. They have used various tests, including Unconfined Compressive Strength (UCS), three-point bending flexural strength, direct shear, completely soaked durability, X-ray Fluorescence (XRF), and Scanning Electron Microscopy (SEM), to analyze their effects. They found that the mixture of 20% RHA with 8% of lime exhibited highest UCS value after 56 days. Therefore, the mix of 20% RHA with 1% of coir fiber and 8% of Lime showed a tenfold increase in flexural strength compared to natural laterite soil after 28 days of curing. They reported also that the coir fiber and rice husk ash could be advantageous for structures like embankments and road layers exposed to significant tensile stresses. While recognizing the authors' dedication in crafting their paper, it's crucial to highlight that certain aspects demand additional clarification and assessment. This discussion piece aims to delve into and address these specific points for further understanding and evaluation.