Low temperature asphalts, classified as warm mix asphalt, half-warm mix asphalt and cold mix asphalt, are increasingly being used, but most of the current specifications are written around hot mix asphalt. The types of specification that are used for hot mix asphalt are discussed and a series of documents drafted to cover low temperature asphalt mixtures are attached as appendices. The appendices are modelled on the current European standards, supporting national guidance documents and the Specification for Highway Works clauses. It is intended that the availability of these documents will encourage greater use of low temperature asphalts until the standard specifications have been updated to explicitly incorporate these environmentally friendly materials

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