The Use of Lime Sludge and Rice Husk Ash in the Stabilization of Road Subbases: A Project Management Plan

Abstract

Cement and lime are common stabilizers which could promote high cost for soil stabilization, prompting the need for sustainable alternatives. Utilizing agro-industrial waste by-products as stabilizers offers a cost-effective solution to replace cement and lime. This project management plan (PMP) investigates the feasibility of using locally available lime sludge and rice husk ash for road subbase stabilization to achieve desired strengths and environmental impact assessments. The PMP focuses on an institutional project with a three-member team, involving preparing soil samples, lime sludge, and rice husk ash, blending samples, conducting Compaction and California Bearing Ratio (CBR) tests, performing environmental impact assessments, and preparing a project terminal report with findings disseminated to stakeholders. Additionally, it excludes the use of other additives for subbase stabilization, large-scale road construction, long-term maintenance, and stabilization of other infrastructure components.