Abstract
This study looks into the use of waste clay bricks, in roller-compacted concrete pavement (RCCP). To this end, waste were used in RCCP (at 0% to 100%) as a substitute for sand. Silica fume (SF) was also used to enhance the mechanical properties of the concrete. Mix designs containing 5% to 15% of SF were firstly prepared to determine the optimal amount of SF in the RCCP. Then, SF were used in bricks’ combination. Vebe, ultrasonic pulse velocity, compressive strength, water absorption, splitting tensile strength, abrasion resistance, and skid resistance tests were carried out on the samples. The results indicated that up to 25% substitution of brick waste for sand in RCCP did not cause any significant adverse effect. However, in amounts higher than 50%, the properties of concrete were affected. Thus, SF improved concrete properties and is capable of offsetting the negative effects of using bricks waste in RCCP.
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