Asphaltic concrete, commonly called asphalt,tarmac, pavement or black top, is a composite material used in the construction of roadways and parking lots. This composite is a mixture of a petroleum byproduct, asphaltic bitumen and aggregate materials. In asphalt concrete, the asphaltic bitumen acts as a sort of glue that binds the aggregate pieces together.
Although the process of paving streets with tar goes backs as far as eighth century Baghdad, no real changes in the process came about until the 20th century brought the first automobiles to public use. In 1901, Edgar Purnell Hooley patented a material called tarmacadam that would become the precursor of modern asphalt concrete. The shortened name of Hooley's material, tarmac, is often used to refer to asphalt concrete despite the fact that modern asphalt concrete does not contain tar.
Historically, asphalt concrete has been used for a variety of purposes, including bullet-proofing British warships in the early 1940s. The asphalt concrete was applied in a thick layer to a steel backing plate that was attached to the exterior hull of the ship. This use of asphalt concrete was called plastic armor and was quite effective at stopping the armor-piercing bullets of the time.
Asphalt concrete is mixed using six main methods. Each of these methods have their own particular pros and cons. These six methods are: hot mix, warm mix, cold mix, cut-back, mastic and natural asphalt.
Roads R Us Pty Ltd supply to the customer specialised asphalt laying equipment along with fully trained experienced operators.
Our services cater for private, commercial and industrial sectors including but not limited to highways, town streets, driveways, caravan parks, car parks & tennis courts.
Please see other services we provide in the list to the left of this page.