Date of Award
1-24-2024
Document Type
Thesis
Degree Name
Engineering, MSE
First Advisor
Zahid Hossain
Committee Members
Alan Meadors; Ashraf Elsayed; Zahid Hossain
Call Number
LD 251 .A566t 2023 T37
Abstract
Rice husk is controlled-burned farm waste. Ash is rich in silicate, a pozzolanic material that improves soil. Rice Husk Ash (RHA) and Hydrated lime (HL) are tested as soil stabilizers in Arkansas' poor subgrade soils. This study analyzes two local subgrade soils with different RHA (3, 6, and 9%), HL (1, 3, and 5%), and RHA (3, 4, or 5%) plus 1%HL. Its goal is to discover the ideal percentages of RHA, HL, or a combination treated soils were tested for Atterberg limits, Modified Proctor, pH, CBR, UCS, and Free Swell. In testing, RHA and HL reduced soil plasticity and MDD. RHA and HL raised USC and CBR. HL significantly raised soil pH, unlike RHA. The optimal RHA and HL dosages were 6% and 3%. The combination of HL and RHA minimized swell and increased strength. Tests and economics showed that 1% HL+4% RHA stabilized the poor subgrade best.
Rights Management
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Tarhuni, Fares, "Efficacy Of Rice Husk Ash (Rha) And Hydrated Lime as Stabilizing Agents for Poor Subgrade Soils in Arkansas" (2024). Student Theses and Dissertations. 138.
https://arch.astate.edu/all-etd/138
