Ultrathin Bonded Asphalt Surface Resurfacing

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Solution Overview

Problem

Conventional repaving methods using ultrathin bonded asphalt surfaces (UBAS) are typically applied on highways, causing significant disruption and material inefficiency in residential areas, leading to increased costs and environmental impact.

Innovation Solution

A system and method utilizing a milling machine and a spray paver with automated controls and a Global Navigation Satellite System (GNSS) for efficient application of emulsion bonding liquid and aggregate material, minimizing material usage and traffic disruption, and enabling one-pass operations on residential streets without shuttle buggies or material transfer vehicles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If conventional repaving methods are used on residential streets, then material efficiency is improved, but traffic disruption and project duration increase

Engineering Contradiction:

Improvematerial efficiencyVSAvoidproject duration

Core Design Contradiction:

Loss of substanceVSLoss of time

Solution Approach 1:

The repaving process is divided into sequential operations: milling the existing surface, applying emulsion bonding liquid, and applying aggregate material. This segmentation allows each operation to be optimized independently and performed efficiently in sequence, reducing overall project duration while maintaining material efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The existing pavement surface is milled and prepared in advance before applying the new UBAS layer. This preliminary action removes the old surface and prepares the base, enabling the new material to be applied directly without requiring extensive preparation time later, thus reducing total project duration.

Inventive Principle:

Principle #10Preliminary action

2Quantity of substance

If conventional repaving methods are used, then material requirements are reduced, but environmental impact and waste increase

Engineering Contradiction:

Improvematerial requirementsVSAvoidenvironmental impact

Core Design Contradiction:

Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The existing asphalt surface is milled and recovered as aggregate material that can be reused in the new UBAS layer or other projects. This recovery process eliminates the need to discard old pavement materials in landfills, reducing environmental impact while maintaining efficient material utilization.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The new pavement layer is created as a composite material combining emulsion bonding liquid and aggregate material in specific ratios. This composite approach optimizes material usage and enables precise control over material properties, reducing waste and environmental impact compared to conventional homogeneous materials.

Inventive Principle:

Principle #40Composite materials

3Manufacturing precision

If shuttle buggies and material transfer vehicles are used, then material application precision is improved, but device complexity and operational difficulty increase

Engineering Contradiction:

Improvematerial application precisionVSAvoidequipment complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The spray paver is designed as a multi-functional device that performs multiple operations: applying emulsion bonding liquid, applying aggregate material, and compacting in a single pass. This eliminates the need for separate shuttle buggies and material transfer vehicles, reducing equipment complexity while maintaining application precision through integrated control.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The application of emulsion bonding liquid and aggregate material is merged into a single operational sequence using one spray paver unit. This consolidation eliminates the need for multiple separate vehicles and operations, reducing device complexity while maintaining precision through coordinated application of both materials.

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach reduces material requirements by 75%, minimizes traffic disruption, and decreases environmental impact by allowing faster project completion with fewer vehicles and less waste, achieving substantial cost savings and efficient material utilization.

Implementation Method 1

spraying a layer of emulsion bonding liquid (EBL) 12

Methodology Applied

Scientific EffectEmulsion: Emulsion

Implementation Method 2

screeding a layer of asphalt aggregate material 14 thereon

Methodology Applied

Scientific EffectScreeding:

Implementation Method 3

A compacting roller vehicle then compacts the aggregate material 14 into the EBL 12

Methodology Applied

Scientific EffectCompaction: Compression

Data Source

PatentUS11214930B2System and method for modifying and repaving paved surfaces

Publication Date: 2022.01.04 MCANANY CONSTRUCTION INC

AI summary

An ultrathin bonded asphalt surface (UBAS) system and method for resurfacing paved asphalt surfaces, particularly local, collector and residential streets in residential neighborhoods, including cul-de-sacs and roundabouts. The asphalt surface can be prepared with a milling machine. A spray paver applies emulsion bonding liquid (EBL) to the prepared asphalt surface at a predetermined shot rate. Aggregate material is discharged from the spray paver onto the EBL. The system is utilized in performing a UBAS resurfacing method according to the present invention.