
The aim of the research is to identify the material which makes the concrete float and it should also have the strength. Floating concrete is a type of concrete having density less than water and it floats on water. There are many types of lightweight concrete which makes the concrete float either by using lightweight aggregate or by using air entraining agent. The conventional aggregates are replaced by light weight aggregates which makes the concrete lighter than the conventional concrete. Comparison has to be made between plain cement concrete and lightweight concrete having different proportions of aggregates, pumice stone and aluminium content by the weight of cement has been taken into account.