The Effect of Addition of Bagasse Ash and Eggshell Powder on CBR Value of Clay Soil

Abstract

In the construction of road construction, soil bearing capacity, such as the CBR value, needs to be considered. In clay soil, the CBR value of the soil is low, so that stabilization material can be added to its repair. In this study, the stabilization materials used were waste materials in the form of bagasse ash and eggshell powder. Variations in the mixture of bagasse ash mixture used in this study were 7%, 10%, and 13% plus 3% eggshell powder. Testing in this study includes testing moisture content, sieve analysis, specific gravity, consistency limits, compaction testing, and CBR. The soil classification system used is the Unified classification (USCS), a test guideline based on SNI. From the CBR soaked test, it was found that the CBR value of clay soil increased along with the increase in the percentage of bagasse ash plus 3% eggshell powder and the increase in collisions on the soil. The percentage increase in the CBR value of clay soil with a mixture of stabilization to clay soil is 92.303%. at 65 blow. So that bagasse ash and eggshell powder greatly affect the increase in the CBR value of clay soil.

Influence of Eggshell Ash and Stone Powder on Geotechnical Properties of Expansive Clay in Dukem Town

“…Evidently, the synergistic interaction between ESA and SP demonstrates an even more pronounced capacity for reducing the swelling characteristics inherent in expansive clay. These findings align harmoniously with analogous outcomes in previous studies, as demonstrated by the works of Jain et al [29], Bapiraju and Prasad K [18], Blayi et al [20], and Carlina et al [28].…”

“…between these particles increases, culminating in the aggregation or flocculation of clay particles. The cumulative impact translates into a perceptible reduction in the plasticity behavior of the expansive soil, aligning with observations from the previous research[18,[26][27][28]. The progressive decrease in the plasticity index, in tandem with rising ESA content, underscores ESA's propensity to promote clamping, flocculation, and coarsening of the soil particles.…”