Stabilization of the Gravels Material for Road Sub-Base: Flexible Pavement

Abstract

Abstract: In many parts of India, high-quality aggregates that match the standards are becoming increasingly scarce and expensive. High-quality aggregates are required in both the base and sub-base course according to traditional flexible pavement requirements. In many circumstances, locally available aggregates do not fit the standards, and the aggregates that do must be transported over vast distances. This act greatly raises the cost of their construction, as well as their ongoing maintenance and restoration. Thus, in a big country like India, using locally available marginal materials in flexible pavement building is one of the viable solutions to high pavement construction costs and a lack of quality aggregates sources. A broad definition of a marginal aggregate is "any aggregate that does not fully conform to the specifications used in a country for normal road aggregates but can be successfully used in special conditions, made possible by climatic characteristics or recent advances in road techniques, or after being subjected to special treatment." So, if the usage of local resources can be permitted through appropriate material or structural design modifications, construction can be hastened and significant monetary savings can be realised. The study's major goal is to add cement and bitumen emulsion to locally accessible gravel soil/marginal aggregate (Moorum) to improve its qualities. An attempt has been made to use cement for increasing the strength of the gravel and emulsion for increasing the water resisting capacity. The whole work involves increasing strength of gravel soil (Moorum) and expressed in terms of CBR and UCS value.