Chemical admixtures are the ingredients in concrete other than Portland cement, water, fine aggregates, and coarse aggregates that are added to the mix immediately before or during mixing concrete. Producers utilize chemical admixtures to reduce the cost of concrete construction; to modify the properties of hardened concrete; to ensure the…
How Were the Pyramids of Egypt Built?
The Pyramids of Giza were built nearly 5000 years ago, at the beginning of human recorded history. The great pyramids of Giza are also known as the Pyramid of Khufu or the Pyramid of Cheops, are the oldest of the three main pyramids on the Giza plateau. This pyramid was…
