ISSN: 2265-6294

Comparative Analysis of Strength of Concrete Produced from Different Fine Aggregates

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Rajeev Kumar Vishwakarma, Vaibhav Dubey, Satish Parihar

Abstract

The high cost of river sand may be attributed to the significant expenses incurred during its transportation from its natural sources. Additionally, the substantial depletion of these sources results in environmental issues. Additionally, factors such as environmental transportation limitations and other limits contribute to the diminished desirability of using river sand. Consequently, it is imperative to actively seek alternative or replacements for river sand. The outcome of the sieve analysis conducted indicated that the aggregates met the grading criterion, as they fell within the specified upper and lower ranges. The specific gravity of the river sand used was measured to be 2.6, but the specific gravity of the grit was established via two separate experiments, resulting in values of 2.23 and 2.45. The average specific gravity of the grit was calculated to be 2.34. The measured bulk density of river sand was determined to be 1550kg/m3, whereas the bulk density of grit was recorded as 1650kg/m3. The slump measurements obtained from specimens with varying water-to-cement ratios (W/C) of 0.35, 0.45, and 0.60 exhibited a range of 51 to 86mm. The concrete specimens made with 100% grit as the fine aggregate and a watercement ratio of 0.45 exhibited a maximum compressive strength of 29.56 N/mm3 at the longest curing age tested. In contrast, the concrete specimens made with sand alone as the fine aggregate showed the lowest compressive strength of 17.33 N/mm3. Therefore, the exploitation of grit in construction is seen as a more cost-effective approach due to its ability to maximize efficiency and its widespread availability across various quarry locations.

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