TAG Meeting #1: May, 17, 2005

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

Florida Institute of TechnologyCivil Engineering Department

PI: Dr. Paul CosentinoAssociate PI: Dr. Howell Heck

Graduate Student: Carl SandinUndergraduate: Lennon Shade

Technical Awareness Group (TAG) Members

• Current members:– David Horhota FDOT-SMO

– John Shoucair FDOT-SMO

– David Westcott CEMEX Corp.

– Chris Brunais Goodson Paving, Inc.

– Suzanne Boroff FDEP

– Jim Langenbach GeoSyntec Consultants

Objectives

The objectives of this 12-month project are:

• identify environmentally safe waste materials; including recycled asphalt pavement (RAP) and concrete rubble

• mix with common fill to improve strength and stiffness

• evaluate economic impacts and benefits to the state

• develop construction specifications

First Quarter Accomplishments

• Website prepared• Report posted on website and submitted April 1st to

FCSHWM

• Site Visit to Goodson Paving to collect concrete samples

• Survey prepared for RAP and Concrete Rubble producers

Web Site• The web site is available to view:

– http://www.civil.fit.edu/cosentino_project.html

• Currently contains:– Project Description– Proposal– Proposal Presentation– 1st Quarterly Report– TAG Presentation

• Continuously Update as Work Progresses

Samples Obtained

• RAP Samples from APAC Melbourne Plant– Good Material in Nonstructural Areas– Subject to Creep under Constant Stress– Mixes Show Improvement but not eliminated

• Concrete Rubble Samples from Goodson Paving Melbourne Plant– Visually a Coarse Granular Material– Several Stockpiles available

Critical Tasks:

1. Sampling Waste Materials

2. Survey Waste Material Generators

3. Begin Testing & Mixing Program

4. Initialize Specifications

Second Quarter Tasks

1. Sampling Waste Materials

• Material sources:– Recycled Asphalt Pavement (RAP)

– Recycled Concrete Aggregate (RCA), concrete rubble

• Improvements to Recycled Materials:– Add % of AASHTO A-3 clean sand

• Improvements to Marginal Soils by Adding RAP or RCA– Sand-clay base

– Muck

2. Survey Waste Generators• To: FDOT District Engineers, then

contractors and processing facilities• Objective: To estimate variability of:

1. Production Type2. Quantities3. Engineering Behavior4. Economics

• Survey Link: • http://my.fit.edu/~cosentin/rap_rca_survey.php\

• Discussion and Comments

3. Testing & Mixing Program

• Fundamental Geotechnical Testing– Grain Size Distribution

– Moisture-Density

– LBR

• Mixes:– RAP and RCA with A-3 sand– RAP and RCA with fill soil or sand-clay base

4. Initialize Specifications

• States using RAP and/or concrete rubble:» Texas

» Virginia

» Michigan

» Minnesota

» California

Next TAG Meeting

• Tuesday July 12th ?

• Time, 2pm?