Firstly, regarding concrete testing, is Mass Per unit Volume and Unit Weight of concrete the same? (they've both got the same unit kg/m3)In the lab of concrete testing, I was required to calculate the cement content (kg/m3), aggregate content (kg/m3) and free water content (kg/m3). I have the weights of cement, aggregate or free water, however, I don't have the volume of the concrete. How can these be calculated? Can someone please enlighten me? Thank you very much.
ok you need the weight of cement, fine and coarse aggregates, and water. then you will need the density of each. for cement, the number varies between 2.8 and 3.1. For aggregates, I'm not sure, I guess it's around 1.7. water is 1. you can consult a good book about concrete technology. I have portland association book. But most of my friends use Neville's.
