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Developing Re-Use Applications and Improving the Economic Benefits of Florida’s Waste Materials. By Paul J. Cosentino, Ph.D., P.E. Howell H. Heck, III, Ph.D., P.E. Background. Florida stockpiles large volumes of waste or recyclable materials Examples: Waste Glass RAP

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Developing re use applications and improving the economic benefits of florida s waste materials

Developing Re-Use Applications and Improving the Economic Benefits of Florida’s Waste Materials

By

Paul J. Cosentino, Ph.D., P.E.

Howell H. Heck, III, Ph.D., P.E.


Background
Background Benefits of Florida’s Waste Materials

  • Florida stockpiles large volumes of waste or recyclable materials

    • Examples:

      • Waste Glass

      • RAP

      • Concrete Rubble and Dust

      • Waste-to-Energy Ash

    • Engineering characteristics of these materials may be improved by adding common fill


Background cont
Background (Cont.) Benefits of Florida’s Waste Materials

  • Proper re-use would produce savings for Florida’s construction and landfill industries

  • Florida’s construction boom has caused a large demand for quality fill

  • Engineering properties of RAP improved by adding sand

  • Blending is common practice and often economical


Objective
Objective Benefits of Florida’s Waste Materials

  • Evaluate Florida’s candidate waste materials and improve their engineering behavior by adding conventional fill to make them economically attractive


Approach
Approach Benefits of Florida’s Waste Materials

  • Two year project

  • Nine Tasks to Accomplish Objectives


Flow chart
Flow Chart Benefits of Florida’s Waste Materials

Identify Re-Usable Waste Streams

Identify Engineering Environmental and Economic Conditions

Reject

Sample Waste Materials

Accept

Dry Rodded Unit Weight Evaluation

Reject

g

Mix %

Accept

Fundamental Geotechnical Testing and Analysis of Blends

Reject

Consistency and Economic Impact

Reject

Accept

Landfill

Applications


Explanation of tasks
Explanation of Tasks Benefits of Florida’s Waste Materials

  • 1 – Identify Candidate Waste Materials

  • 2 – Sampling

  • 3 – Fundamental Geotechnical Testing

  • 4 – Analysis of Testing

  • 5 – Waste-Soil Mixing Program

  • 6 – Waste-Soil Geotechnical Testing

  • 7 – Analysis of Mixing Results

  • 8 – Economic Impact of Re-Usable Materials

  • 9 – Reporting, TAG Meetings & Specifications


Major tasks
Major Tasks Benefits of Florida’s Waste Materials

  • Year 1

    • Select candidate materials from facilities statewide

    • Perform fundamental geotechnical testing

    • Choose materials with minimal environmental concerns

      • RAP, waste glass and concrete rubble and dust

  • Year 2

    • Perform Mixing Analysis

    • Evaluate Economics

    • Complete specifications describing proper use


Proposed schedule
Proposed Schedule Benefits of Florida’s Waste Materials


Expected technical results
Expected Technical Results Benefits of Florida’s Waste Materials

  • Geotechnical engineering data base

  • Summary of economic impact for re-using these materials

  • Specifications


Anticipated benefits
Anticipated Benefits Benefits of Florida’s Waste Materials

  • Two end users groups will benefit:

    • Contractors who use soils and borrow materials in highway construction

    • Landfill operators at solid waste or construction and demolition landfills

  • Suitable fill is becoming costly. Providing more choices, will control costs and save money.

  • Re-use of waste materials diverts them from the waste stream, and reduces landfilling costs & increases landfill space.


Related work
Related Work Benefits of Florida’s Waste Materials

  • A significant database of information exists to expedite the proposed work

  • Waste products have engineering properties that fall short of those needed for re-use in highways

    • Waste-to-energy ash

    • Waste-glass

    • RAP


Follow up
Follow-up Benefits of Florida’s Waste Materials

  • FDOT has funded over a decade work in this area without concentrating on economics.

  • A $261,000 24-month proposal has been funded to continue work on RAP and RAP-soil mixes.

  • The funding request to the FCSHWM is considered a supplement to the FDOT work.


Year 1 budget
Year 1 Budget Benefits of Florida’s Waste Materials


Year 2 budget
Year 2 Budget Benefits of Florida’s Waste Materials


Technical awareness group peer reviewers
Technical Awareness Group Benefits of Florida’s Waste Materials& Peer Reviewers


Summary
Summary Benefits of Florida’s Waste Materials

  • Waste Materials can be re-used in Highways

  • Economic Benefits to Construction Industry

  • Economic Benefits to the Solid Waste Industry

  • Environmental Benefits to the Public


Questions
Questions? Benefits of Florida’s Waste Materials


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