Stone Mastic Asphalt in the Technical Regulations

Although the wearing course construction method "Stone Mastic Asphalt" has existed since 1968 - even if under other, different product names and has proven successful on millions of square meters of road surfaces, it was first officially adopted into" ZTV bit-StB 84 in 1984. This is the Supplementary Technical Conditions of Contract, Specifications, and Guidelines-bituminous road courses; the technical regulations for road construction in Germany.