Patent ID: 8202021
Filing Date: 2012-06-19
Classification: E01C

Abstract:
1. A method of remediating an existing asphalt surface course layer using cold in-place recycling of original asphalt of the asphalt surface course layer, the method comprising: depositing a predetermined proportion of portland cement and water onto the existing asphalt surface course layer; milling the existing asphalt surface course layer, the deposited portland cement, and the water, to generate asphalt particles, the milling performed using a milling head, wherein the depositing of the water includes spraying the water onto the milling head during the milling of the existing asphalt surface course layer, the deposited portland cement, and the water, wherein each of an underlying binder course layer, an underlying base course layer and an underlying subbase course layer are substantially preserved during the milling of the existing asphalt surface course layer, the deposited portland cement, and the water; collecting the generated asphalt particles; filtering the generated asphalt particles to provide filtered asphalt particles; adding a predetermined proportion of an additive to the filtered asphalt particles; mixing the filtered asphalt particles and the additive to generate a recycled mix; depositing the recycled mix onto at least one of the substantially preserved binder course layer or an unmilled portion of the existing asphalt surface course layer; and finishing the deposited recycled mix to create a new recycled surface course layer.