| Title | Recycling of dolomite powder in clay bricks: Effects on characteristics and gas release |
|---|---|
| ID_Doc | 19353 |
| Authors | Kizinievic, O; Gencel, O; Kizinievic, V; Sutcu, M; Skamat, J |
| Title | Recycling of dolomite powder in clay bricks: Effects on characteristics and gas release |
| Year | 2023 |
| Published | |
| Abstract | This paper evaluates the influence of dolomite industrial waste (dolomite powder (DP) on the properties, structure and durability of clay bricks. Four clay samples fired at 900 degrees C and 1000 degrees C containing 0 wt%, 10 wt%, 20 wt% and 30 wt% DP were prepared and investigated to measure their properties (shrinkage, bulk density, water absorption, thermal conductivity, apparent porosity, compressive strength), structure and durability (compressive strength after freeze thaw). The results showed a decrease in bulk density, compressive strength and an increase in apparent porosity and water absorption of the clay bricks produced by mixing 70-90 wt% clay and 10-30 wt% DP compared to the control bricks. Also, a significant improvement in the thermal conductivity of clay bricks produced by 70 wt% clay and 30 wt% DP (0.407-0.420 W/(m & BULL;K) compared to the control clay bricks (0.839-0.845 W/(m & BULL;K). As clay mixtures contain DP (chemical composition: CaO-49.68%, Loi-42.80%), CO2 emissions during the firing process are increased (decarbonation reactions). However, the thermal conductivity of the fired clay bricks is significantly reduced (to 50%). These results showed the potential of DP for the manufacturing of clay masonry units. |
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