What is the tonnes of sand required in one cubic metre of grade 25 concrete?

In grade 25 concrete, which typically has a mix ratio of 1:1:2 (cement:sand:aggregate), approximately 0.5 cubic metres of sand is required per cubic metre of concrete. Since the density of sand is about 1,600 kg per cubic metre, this translates to around 800 kg of sand needed for one cubic metre of grade 25 concrete. This amount can vary slightly based on the specific mix design and moisture content of the sand.