n IMIESA - South Africa's concrete challenge : roads construction




HUMAN INGENUITY KNOWS no bounds. Our inquisitive nature, ability to learn and apply what we have learned has led us to creating and building the modern, technology-driven lifestyle we all enjoy. One invention that stands out, in many ways head and shoulders above the rest, is concrete. This initially malleable material, with its additives, that is reinforced with steel bars and cast in form work, giving us the ability shape and form it as we wish, and, in becoming rock hard, gives us rigid structures that can withstand earthquakes, standing for more than a hundred years.J oseph Aspdin patented a method for producing Portland cement in 1824. Reinforced concrete was invented in 1849 by Joseph Monier. In 1889, the first concrete reinforced bridge was built, and the first large concrete dams, such as the Hoover Dam, were built in 1936.


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