Effect of Various Proportions of Rice Husk Powder on Swelling Soil from New Cairo City, Egypt

Swelling soil leads to many types of constructional damages, deformations, and failures in the constructions’ roads, shoulders, foundations. Depending on amount swell, they can be insignificant, moderate, or massive. This paper presents a method for swelling stabilization by adding rice husk powder (RHP) variable percentages 0, 5, 10, 15, 20, 25 weight dry soil. The properties were investigated various lab tests such as consistency limits (plastic limit, liquid plasticity index), potential, pressure, free swelling, swell index. was also mineralogically examined using X-ray diffraction clay mineralogy. reduced from 56% (extremely high plasticity) 4.5% (low plasticity). potential (S) pressure (SP) decreased 48% 45.5, 44.7, 34.6%, 1003 kN/m2 800, 653, 489 partial replacement 5%, 10%, 15% RHP, respectively. results show that present approach is very efficient improving optimal added RHP 15%. It will database aimed at reducing construction risks future.