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Mechanical Properties of Concrete Using Coal Waste (Heap) as Partial Replacements of Fine Aggregate in Hot Weather

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This study was carried out to investigate the effects of temperature and coal waste (heap) in addition to concrete strength under simulated hot weather conditions. The study consists of comparing the properties of a reference concrete with concrete incorporating aggregate of coal waste (heap) at seven levels of heap as content (0, 1, 2, 3, 4, 5 and 6 percent fine aggregate replacement) and two levels of temperature (25 and 50°C). The simulation of the hot climate in the laboratory is subjected to temperature of 50°C with relative humidity of about 10%, wind speed at 10km/h and E/C ratio constant between all mixtures. The results revealed that coal waste (heap) inclusion was more effective and can be used for enhancement of concrete properties. The optimum heap varied between 1 to 4 percent. However, the resistance at higher temperatures was positively affected by the inclusion of coal waste.
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Hot-Weather Concreting; Coal Waste (Heap); Environment; Compressive Strength; Flexural Strength

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