An asphalt mix, such as stone matrix asphalt and porous (Open Grade) asphalt, capable of being prepared at temperatures used for "warm-mix" asphalts is disclosed. The asphalt mix comprises a first additive comprising the mineral porcelanite and an activating agent and a second additive. The asphalt mix is stable and meets performance requirements according to national standards. The asphalt mix requires less bitumen than fiber-stabilized mixes, and can be mixed for less time at a lower temperature. The asphalt mix is thus more economical and environmentally friendly than existing asphalt mixes.
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