Study On Flyash Bricks And Concrete Blocks Using Flyash And Waste Concrete And Brick Debris

Abstract

In the recent times, there has been a massive increase in the magnitude of demolished waste materials due to natural disasters like earthquake, reconstructions of buildings for healthier economic gain, and war explosions. Also many concrete structures are razed after a period of service life and the rate is increasing day-by-day and this waste material needs to be dumped on costly land. Moreover, dumping is a big problem in metro cities where free land for dumping is not available easily; therefore, it is required to transport for longer distances to dump, which increases the disposal cost. Although the physical properties of these waste concrete materials are 76% lower than the normal concrete, this can be enhanced by adding small discrete polymer fibers into the concrete. The present project report describes an experimental investigation carried out on polymer fiber reinforced recycled aggregate concrete. A total of 63 (5x5x5cm) cubes,  6 (15x15x15cm) cubes,   60 (23x11x11cm) bricks and  70 (39x19x19cm) solid blocks were cast and tested to study the various physical properties of the recycled aggregate concrete, which will be use to the construction industry. Based on the results of the test program, it is observed that the addition of small discrete polymer fiber, improves the various physical properties, post cracking tensile strength and flexural strength of recycled aggregate concrete. It is suggested that recycled concrete is a possible substitute for the aggregates in the areas where concrete disposal is a problem or the areas where natural aggregates are not accessible.