Concrete is a compound made of abrasive grainy material (the cumulative or filler) entrenched in a solid mould of material (the cement or joiner) that seals the gaps of the cumulative particles and binds them with each other.

The Hoover Dam, the Panama Canal and the Roman Pantheon are some of the world’s most prominent concrete edifices. Ancient Romans were the first to employ concrete in building huge structures.  Sand concrete was an extensively used material during the Roman Period – the Pantheon has the largest concrete dome in the world and the Colosseum was constructed mainly with concrete.