Discussion of Flexural and Shear Strength Properties of Laterite Soil Stabilized with Rice Husk Ash, Coir Fiber, and Lime, by Rithy Domphoeun and Amin Eisazadeh (2024), Published in Transportation Infrastructure Geotechnology, DOI.org/10.1007/s40515-023-00364-5
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.
