Evaluation of rice husk ash and Portland cement reinforced clay for use as road subgrade using the CBR test

作     者：Nneka Juliana Ogbuagu Emmanuel Amagu Echiegu Uche Jenice Chiwetalu 

作者机构：Department of Agricultural and Bioresource EngineeringEnugu State University of Science and TechnologyEnuguNigeria Department of Agricultural and Bioresource EngineeringUniversity of Nigeria NsukkaNigeria. 

出 版 物：《Journal of Bioresources and Bioproducts》 (生物质资源与工程（英文）)

年 卷 期：2018年第3卷第2期

页      面：65-70页

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：Soil Stabilization Rice husk ash CBR Atterberg limit 

摘      要：The amount of rice husk waste generated in Nigeria is posing serious threat to the environment and the *** these wastes for productive purposes has been of interest to government and *** study evaluated rice hush ash(RHA)reinforced clay for use as road subgrade,using the California Bearing Ratio(CBR)as prescribed in ASTM *** clay was mixed with RHA/Portland cement in the ratios of 0%(control),2.5%,5%,7.5%and 10%.Results showed that the physical properties of the soil in its natural form did not meet the FMW&H guideline specification for subgrade road;thus there was a need to stabilize the *** the percentage of RHA increased,the strength of the soil increased,with the maximum strength observed at 5%RHA,beyond which there was decrease in the load bearing capacity of the *** CBR ratio of 9.35%was obtained at 5%RHA,5%Portland cement and 90%clay *** this result with the soil at natural state(CBR=1.55%),it shows that RHA is a good improvement agent for the *** research can be beneficial to highway road construction in areas with similar soil conditions.