Trade Journals for the Concrete Industry

It is invisible for force and thermal and it only can be done by mechanical calculation until several years ago for the engineers to know how will be the structure deformed when how much load is applied. However this calculation can only show you the local result and the rough behavior for the total structure. The moulds used for manufacturing precast concrete are normally against the really harsh working condi- tion. Violent vibration when pouring concrete, heavy concrete weight and pressure, heavy loading on lifting point when moving, weight load when the mould are multi stacked, heating with curing steam, cooling with the cold air when stripping in the winter, etc.