The addition of waste-brick material in brick production was studied. The effects of recycling waste brick on the durability and mechanical properties of the bricks were analysed. Fired waste bricks cause considerable harm to the environment. During production, especially in the firing, transportation and construction procedures, large amounts of bricks are broken and have to be dumped in landfills or used as a filling material. For this purpose, the chemical and mineralogical structures of waste bricks from the Corum region in West-Anatolia, Turkey, were investigated. After pulverising, the samples were divided into two categories: passing through a 4.75 mm sieve (coarse) and passing a 600 micron sieve (fine). In order to obtain comparable test results, ratios of the waste (0, 10, 20 and 30 wt%) were added to the raw-brick clay. Standard test methods were used to determine the mechanical properties of the bricks at different firing temperatures. The results show that, at 30 wt% fine-waste material additive, fired at 900 C, the bricks have adequate strength. The reuse of this material in the brick industry would contribute to the protection of farmland and the environment. 15 refs.
Primary author(s): Demir I; Orhan M
Afyon Kocatepe,University; Ankara,Gazi University