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Manufacture of Soil-cement Bricks with the Addition of Shredded Tire Waste
Summary
This isn't really a human health study, it's actually about construction materials and recycling. Researchers tested adding small amounts of shredded tire rubber (the kind from old car tires) into bricks made of soil and cement, to see if this waste material could be reused instead of piling up in landfills or being dumped illegally. While this doesn't directly address human health, keeping old tires out of the environment matters because improperly discarded tires can collect standing water (breeding mosquitoes that spread disease) and slowly break down into microplastic particles that can contaminate soil and waterways.
With the growth of the population and, consequently, the increase in the generation of solid waste, frequently discarded in inappropriate ways, ways of reusing these materials are increasingly intensified. In this context, the tyre stands out as an example of a material that, when improperly discarded, can cause irreparable damage. Therefore, this work aims to analyse the possibility of incorporating shredded tyre rubber granules into the production of soil-cement bricks, proposing an alternative way to make use of unusable waste in the environment. For the characterisation of the soil, particle-size analysis, liquid limit and plastic limit tests will be carried out. The cement used in the composition of the mixture will be CP II E 32, and the shredded rubber waste underwent particle-size analysis to define the grain-size range to be used. For the tests, additions in proportions of 1%, 1.5% and 2% of shredded tyre waste will be made to the soil-cement mixture and compared with the reference soil-cement brick without the addition of the waste through simple compressive strength and water absorption tests, proposing a possible way of using the waste that would be discarded into the environment.