MAXIMIZING CEMENT-STABILIZED CLAY SOIL STRENGTH IN ROADD CONSTRUCTION THROUGH SUSTAINABLE CALCIUM CARBIDE RESIDUE UTILIZATION.

MAXIMIZING CEMENT-STABILIZED CLAY SOIL STRENGTH IN ROADD CONSTRUCTION THROUGH SUSTAINABLE CALCIUM CARBIDE RESIDUE UTILIZATION.

Abstract:

This study focuses on the characterization and classification of clayey soil collected from the Gwagwalada – Garki road, followed by its stabilization using cement and Calcium Carbide Residue (CCR). The American Association of State Highway and Transportation Officials (AASHTO) soil classification system categorized the soil as A-7-6. Various mixtures of clay, cement (ranging from 0% to 6%), and CCR (ranging from 0% to 15%) were prepared.

To evaluate the effectiveness of CCR on cement-stabilized clayey soil, the Unconfined Compressive Strength (UCS) test was conducted. The results indicated a significant increase in UCS with increasing percentages of cement and CCR. Without cement, the UCS ranged from 71 kN/m² at 0% CCR to 602 kN/m² at 15% CCR after 90 days of curing. When 6% cement was used, the UCS improved from 473 kN/m² at 0% CCR to 3589 kN/m² at 15% CCR after 90 days of curing.

Notably, the attained UCS strength met the requirements for a soil material to serve as a base course for heavily trafficked road applications. Furthermore, it was found that the optimal content of CCR for efficient stabilization of clayey soils lies within the range of 12% to 15%. This research provides valuable insights into enhancing the engineering properties of clayey soil through the synergistic effects of cement and CCR, thereby offering a promising and sustainable solution for road construction projects.

MAXIMIZING CEMENT-STABILIZED CLAY SOIL STRENGTH IN ROADD CONSTRUCTION THROUGH SUSTAINABLE CALCIUM CARBIDE RESIDUE UTILIZATION.   GET MORE, ACTUARIAL SCIENCE PROJECT TOPICS AND MATERIALS