Method of upgrading gravel and/or dirt roads and a composite road resulting therefrom

Abstract

A method of paving a gravel and / or dirt roadway (10) is provided. This method includes evaluating the roadway to determine if it is an appropriate candidate for emulsion stabilization, rotating a milling head (20) down a roadway to break up gravel and dirt base layer (14), injecting an asphalt emulsion into the broken up gravel and dirt (24), and mixing the emulsion with the gravel and dirt (24) so as to form an emulsion stabilized layer (18). The emulsion stabilized layer (18) is then spread and compacted to create a paved roadway. Following this, a wearing surface may be applied to the emulsion stabilized layer (18).

Description

technical field [0001] This invention relates to the reconstruction and laying of roads. In particular, the present invention relates to methods of designing and building roads using on-site ground material rather than clearing and replacing roads. Background technique [0002] Currently, when roads are rebuilt, materials such as stone, dirt and gravel are often dug out and removed. The aggregate base and hot mixed asphalt are then transported to the construction site and laid in multiple layers over the clean area. A disadvantage of this process is that it is time consuming as it requires two steps. Break up dirt or gravel roads and remove material in one pass. Then, in a second process, the aggregate and bitumen are transported to the site and laid on the excavated surface. [0003] Another disadvantage of this process is its high cost. The expected level of traffic on the road must be planned for several years in the future, so the road must be constructed with the n...

AI Technical Summary

Problems solved by technology

Also, there is often no room to widen the road, as it stretches beyond the existing passable land adjacent to the road being purchased, and incurs additional costs

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