Partial Replacement of Natural Aggregates with Ferrochrome Slag
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 6
Abstract
In a developing country like India, with fast decrease in the available natural resources which are used for the construction purpose we should search for alternative materials which satisfy the requirements of the materials in use. Construction of infrastructure also increases the demand for production of concrete, which in turn increases the demand and supply of aggregates. Lack of availability of good quality aggregates within reasonable distance brings out the need to identify the sources of new aggregate. The material used for testing need to have the potential to meet the aggregate demands for construction activities. The twin objectives of conservation of natural resources and pollution free environment may be achieved. Recycling the waste concrete was the first initiative step taken to produce a new aggregate concrete. Replacing part of the natural aggregates with alternatives has the benefits of reducing the extraction of aggregates, the amounts of disposed waste materials, and the associated environmental and social impacts. The principal objective of this project is to evaluate the potential use of Ferrochrome Slag aggregate as alternative aggregates in concrete, a major construction product. Construction aggregate, or simply "aggregate", is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined material in the world. Aggregates are a component of composite materials such as concrete and asphalt concrete; the aggregate serves as reinforcement to add strength to the overall composite material. Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage applications such as foundation and French drains, septic drain fields, retaining wall drains, and road side edge drains. Aggregates are also used as base material under foundations, roads, and rail roads. In other words, aggregates are used as a stable foundation or road/rail base with predictable, uniform properties (e.g. to help prevent differential settling under the road or building), or as a low-cost extender that binds with more expensive cement or asphalt to form concrete. Sources for these basic materials can be grouped into three main areas: Mining of mineral aggregate deposits, including sand, gravel, and stone; use of waste slag from the manufacture of iron and steel; and recycling of concrete, which is itself chiefly manufactured from mineral aggregates. In addition, there are some (minor) materials that are used as specialty lightweight aggregates: clay, pumice and vermiculite.
Authors and Affiliations
Nistala Anjani Sowmya Sree
Keywords
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