HYPO SLUDGE: OPPORTUNITIES FOR SUSTAINABLE DEVELOPMENT OF LOW COST RURAL ROADS

Hypo Sludge, a waste derived from paper industry is plentiful in India causing severe health, environment and dumping problems. Utilization of Hypo Sludge in bulk quantities, ways and means is being discovered all over the world to use it for the construction of embankments and roads. This way the Hypo Sludge concrete are made a 'greener' building material and the discarded natural wastes can be re-utilized, avoiding otherwise wasteful landfill and harmful open incineration.To make value added concrete for development of sustainable infrastructure there is a great need to study the technical details concerned with various industrial wastes in concrete and to reduce environmental hazards. It is also needed to reduce the cost of concrete for rural development in India. A cement concrete pavement is designed for a Rural Road in Gujarat State having a traffic volume of up to 500 vehicles per day. The soil has a soaked CBR value of 2%, 4% and 6% and design wheel load 30kN. So our study is concerned with eco-efficient utilization of hypo sludge as partial replacement of cement in concrete.The aim of the present study is to investigate the low cost rural roads made of Hypo Sludge. The Hypo Sludgewas replaced within the range of 10-40% by weight of cement. In the present study, 5 different mixes of Hypo Sludgeconcretes are tested for parameters like: compressive strength, flexural strength, modulus of elasticityand cost.