<p><b>Studied lite</b><b style="background-color: initial;">rature, journals, and case studies on soil stabilization techniques and crumb rubber applications.</b></p><p><b>&nbsp;Carried  out laboratory tests on soil samples with and without crumb rubber additives.</b></p><p><b>Collected, recorded, and analyzed experimental results (e.g., CBR, UCS, compaction).</b><b style="background-color: initial;"></b></p>