COMPARATIVE RESPONSE OF FOUR PEDOGENIC SOIL MATERIALS TO CEMENT STABILIZATION

Abstract

A comparative response of four Pedogenic soil materials to cement stabilization was investigated. The studies focused on the compaction characteristics, the unconfined sompressive strength and the California bearing ratio of the samples. The results obtained show that soil materials from Maiduguri responded favorably to cement stabilization compared to soils from Yola. All the values obtained for Maiduguri soils at 2% cement content met both the conventional UCS values of (3000 kN/m² - 6000 kN/m²) for base course of highly trafficked roads, and the minimum CBR value of 180% as recommended by [I2] to be adequate for cement stabilized soils, while soils from Yola met the conventional UCS values of (1500 kN/m²-3000 kN/m²) for base course of lightly trafficked roads not only at 2% cement content but for all the ranges of cement content used (2%-10%), 4% cement content was found to be the optimal for Yola soils to achieve the minimum CBR value of 180% set out by [I2]. On stabilizing the soil materials from Maiduguri with 2% cement as the optimal content, it can be used as base course for highly trafficked roads, while 4% cement was recommended as the optimal cement content and can be used as a-base course for lightly trafficked roads [l1].