1. Recycled Glass in Construction and Paving Materials
John M. Mueting, Dept. of Technology
Anam S. Hussain, MBA Department
Dr. Pranshoo Solanki, Dept. of Technology
Dr. Tom Bierma, Dept. of Health Sciences
Dr. Guang Jin, Dept. of Health Sciences

2. The Business Problem
Local recycler is producing tons of glass per month
Single-stream processes leave colors mixed
Impurities in stockpiles
Currently shipping glass to Chicago for sorting and cleaning... Expensive

3. Phase 1: The Question & The Process
Is there a local construction market for the recycled glass that would reduce transportation expenses for the recycler?
Step 1: Study municipalities using recycled glass and begin brainstorming
Step 2: Select a construction product, study Illinois DOT specs, and discuss with local concrete facilities
Step 3: Make samples of the product, test to see if it meets Illinois DOT specs, revise samples if needed

4. Phase 2: The Question & The Process
Is there a local construction market for the recycled glass that would reduce transportation expenses for the recycler?
Step 4: Study technical feasibility of using the glass in a construction product
Step 5: Submit results to governing bodies such as Town of Normal, City of Chicago etc. for approval of the construction product
Step 6: Work with local municipalities to implement the product in construction and paving applications

5. Product Selection PHASE 1 Controlled Low Strength Material (CLSM)
Material required for CLSM
Cement, Sand, Water, Fly ash, Admixtures (air)
Low strength, Flowable concrete mix
Self-leveling and self-compacting material
Source 1

6. Product Selection Controlled Low Strength Material (Flowable Fill) -
PHASE 1
Product Selection
Controlled Low Strength Material (Flowable Fill) -
Applications
Sub-grade for sidewalks
Pipe bedding
Embankments
Source 2

7. Glass Samples A1 and A2- raw samples directly from stockpile
PHASE 1
Glass Samples
A1 and A2- raw samples directly from stockpile
B1 and B2- raw samples flushed with water to remove debris
C1 and C2- Samples B1 and B2 crushed with a sledgehammer
Notice: paper debris from raw sample (shown on right)

8. Debris Removed Cleaned Glass Crushed Glass
PHASE 1

9. PHASE 1
Sieve Analysis

10. PHASE 1 ⅜’ Sieve No Size (mm) 9.51 #4 4.76 #16 1.19 #50 0.297 #100
0.149

11. CLSM Sample Preparation
PHASE 1
CLSM Sample Preparation
Recycled Glass (instead of Sand)
Fly Ash
Portland Cement
Water

12. CLSM Compression Testing
PHASE 1
CLSM Compression Testing
Large Cylinder stable in air, not water
Two Small Cylinders unstable and brittle in air
No compression testing

13. Phase 1: Conclusions Stockpiled glass is too “dirty”
Sieve analysis suggests IDOT gradation is obtainable
Curing Method: Samples cured by sealing them in a plastic bag, but not in water for 28-day strength
picture

14. Phase 2: Future Research
Debris- free glass from Cathode Ray Tubes
Sieve Analysis
Compression Test (28-day strength)
Economic viability
Relay information with Illinois Ready Mix Concrete Association, companies, Town of Normal, City of Chicago, Illinois Tollway Authority
Quantitative and qualitative results→ Potential to draft and get the specifications approved by the authorities

15. Sources & Acknowledgements
Source 1 [ConcreteNetwork.com]. Retrieved from gallery/images/375x281Exact/site_26/concretenetwork-com_18107.jpg
Organizations that contributed in discussions...
Town of Normal, Illinois
Source 2 [National Clay Pipe Institute]. (2013 Mar 23). CLSM Flowability - 8 inch Spread Diameter. [Video File]. Retrieved from
City of Chicago
Acknowledgements:
Illinois Tollway Authority
Companies that donated materials...
Ozinga Concrete
Midwest Fiber Recycling (glass)
VCNA Prairie Materials
LaFarge North America (fly ash)
Illinois Ready-Mix Concrete Association
Prairie Material (cement and aggregate)

16. Questions?

17. Thank you