Systems, mixtures and methods of producing paving products using same
A mixture of RAS and RAP, combined with optional materials, is heated and molded under pressure to produce durable paving blocks, addressing waste issues and enhancing material value.
WO2026054898A1 Publication Date: 2026-03-12WILSON GARY
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Patent Information
- Application Number
- PCT/US2025/039633
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-06-19
- Filing Date
- 2025-07-29
- Publication Date
- 2026-03-12
AI Technical Summary
Technical Problem
Existing methods fail to effectively utilize recycled asphalt shingles (RAS) and recycled asphalt pavement (RAP) to produce durable paving blocks, leading to significant waste accumulation and underutilization of valuable materials.
Method used
A mixture comprising RAS and RAP, along with optional rock-like materials and hard surfacing materials, is heated and molded under pressure to create durable paving blocks, utilizing the binder properties of RAS to enhance strength and durability.
Benefits of technology
The resulting paving blocks exhibit high compressive strength, resistance to water absorption, and are nearly impervious to damage from freeze/thaw cycles, reducing waste and lowering production costs.
✦ Generated by Eureka AI based on patent content.
Abstract
A material processing system or method for heating and / or metered dispensing of a mixture material formed from desired proportions of recycled asphalt shingle and recycled asphalt pavement is disclosed. The methods of molding the mixture into paving or construction blocks, which exhibit properties of high compressive strength and low water absorption, are described. The paving blocks may be used to construct roads, parking lots, driveways, etc. The system includes a vertical heat exchanger and a material feeder. The heat exchanger utilizes flue gas to heat the material traveling through conduits. The material feeder includes a rotating drum to receive the heated material from the heat exchanger and meter out an amount of the heated material using pockets defined between paddles of the metering drum. The metered amount of the heated material can then be provided to a transfer device for molding into the blocks or directly to a molding system.
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