Inverted Pavements, An Overview

Abstract

The goal in any pavement design and construction project is to produce a pavement that is durable and performs satisfactorily throughout its expected design life. Pavement design involves a procedure for choosing a pragmatic along with economical collaboration of substances of familiar power as well sufficient thickness to help the foreseen traffic beneath awaited environmental states. Pavements were coated structures of changing thickness along with features resting on subgrade soil. Engineering model of a pavement was relied on a presumption where every coat in the pavement had a less mentioned structural standard to aid as well as issue the superimposed loads. Inverted pavement structures were a creative pavement method evolved in South Africa in the 1970s. Inverted pavements constitutes of the same material components as those utilized in a traditional adaptable pavement however, the substance coats were rearranged [Shane Buchanan]. Unlike in a flexible pavement where the unbound aggregate base (UAB) layer was positioned on subgrade and thicker hot mix asphalt (HMA) layers were put on top, in an inverted pavement, a cement treated base (CTB) layer was put on the developed subgrade with the UAB coat put on top accompanied through HMA layers. The motivation behind increasing use of inverted pavement system is its ability to allow maximum use of the structural elements of UAB layers in association with a thin HMA coat as well as a CTB coat which gives an outstanding technique of attaining performance, economic savings as well as sustainability.