The application of coffee husk ash to improve compaction characteristics of clay soil

Abstract Soil stabilization is the modification process of one or more soil properties mechanically chemically to generate an improved material with appropriate engineering properties. Recently, methods utilizing commonly used stabilizing agents are becoming costly. On other hand, there increasing interest in identifying new green technologies that may be improve construction practices. As a result, search for materials and processes processing local has moved priority. Thus, this study was conducted validate effectiveness coffee husk ash (CHA) as agent on compaction characteristics clayey soil. To characterize admixed varying concentrations CHA, Atterberg limits, grain size distribution, standard proctor tests were conducted. The mixed CHA ranging from 5% 25% by dry weight Observation indicates progressively enhances performance. pozzolanic hydration reactions between have made likely compacted.