Sustainable Development of Geopolymer Concrete Paver Blocks Blended With Boiler Sand

Abstract

The usage of industrial by-product Flyash (FA) and Boiler Sand (BS) in connection with alkali activators in the manufacturing of geopolymer concrete was investigated. Cement is the most important binding component in Concrete and it plays vital role in the Construction Industry. In the current decades, Cement manufacturing units are producing more than 300 million metric ton cement which creates global warming problems because of the release in carbon dioxide (CO2). In the society it is great thread to the environment and human health. This scenario has been changed by preparing new development of cementitious materials instead of cement in the Concrete. Alkali activator based geopolymer act as good binding material in the concrete. The binding capacity of the geopolymer addressed by using Class F FA, Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3) with proper mix ratios. One of the main issues faced by Tyre Industry, in Tirunelveli is the disposal of used boiler sand. Boiler sand used as insulating agent for the boilers in the industries it is obtained around 55 tonnes per week. The idea was proposed the usage of BS in the preparation of geopolymer concrete which leads to reduce the storage problems. The utilaization of BS create economic aspect in the development of concrete. The various trial mix design was made with replacement of Sand by BS of 10%, 20%, and 30% respectively. With this above mentioned various mix proportions Pave blocks are to be manufactured and the various properties are verified with IS 15658:2006 guidelines.