| Summary: | This research paper attempts to analyse an alternative replacement for river sand in concrete with sand from tin mining as a non-conventional material, which is widely available in Malaysia and in particularly in the State of Perak, and will be wasted if not being fully utilised. Three types of mining sand from three locations in the State of Perak, have been chosen. Compressive strength testing using mining sand in place of river sand was carried out. Concrete was designed to have target strengths of 30 and 40 N/mm2 using mining sand and river sand as control. Compressive strength tests at the 3, 7, 28, 60 and 90 days were carried out. The compressive strength results indicated that concrete using mining sand has slightly higher compressive strength at 28 days for all grades. The permeation properties of concrete in terms of permeability and resistance to carbonation were investigated. The results indicate that concrete from mining sand has comparable with river sand. It can be concluded that mining sand has the same performance as river sand and can be used and marketed as an alternative to river sand. Therefore, excavation of riverbeds in Malaysia can be minimised and rivers can be maintained.
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