Electrical conductivity is important in some specific applications such as railway sleepers (where resistivity can affect signalling systems) or in structures where concrete is used for protection from stray currents.
BS 8500 was revised in 2015 and the relevant advice for the cover to reinforcement of concrete in the ground clarified.
Not all the construction water used in concrete to make it workable is used in the hydation process. Much evaporates with time as the concrete dries out. But how much is held in the concrete? The following is a simple calculation, but the actual amount will depend on the environment in which the concrete is situated.
I am a student doing a project. Can you send me some information on cement and concrete?
I need to build a concrete bund wall to prevent spillage of chemicals. Should the concrete have a chemical protective coating?
Are swimming pool chemicals aggresive to concrete?
What are Ecopoints?
What are meant by the terms ‘Whole Life Performance’ and ‘Whole Life Costs’?
What does BREEAM mean?