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Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 11
Soil and Materials Engineers, Inc.
Field Demonstration of Blended
Base Courses Containing Recycled Concrete Aggregate and
Foundry Sand
11/28/2012
consultants in the geosciences, materials and the environment
Presented By: John E. Dingeldein, P.E.
consultants in the geosciences, materials and the environment
Acknowledgements :
Grant Funded by EPA
Sponsored by AFS First - Mike Lenahan President
Administered by – Elizabeth Olenbush
Project Provided by Village of Cuyahoga Heights – Paul Dey, P.E.
Materials & Technical Support - Kurtz Bros. - John Kurtz
Field and Laboratory Services by SME – John Dingeldein, P.E.
consultants in the geosciences, materials and the environment
STATEMENT
Highway administrations are moving more
and more to construction green highways using more and more recycled materials. By
combining two of the largest recycling
streams in the region, Recycled Concrete
(RCA) and Foundry Sand (FS), a successful
blend of materials can be produced for
roadway base and other uses.
consultants in the geosciences, materials and the environment
PROJECT OBJECTIVES
� Enlarge the market for recycled materials.
� Compare the performance of a RCA/FS blended to
a ODOT 304 gradation with that of the standard
ODOT 304 crushed limestone base.
� Expand business for recycled materials generators.
� Generate data to help develop future standards
and specifications for the use of recycled
materials.
� Develop and disseminate a case study.
Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 22
consultants in the geosciences, materials and the environment
Project Location – Village of Cuyahoga Heights, OH
consultants in the geosciences, materials and the environment
Site Plan with Test Locations
consultants in the geosciences, materials and the environment
TEST SECTIONS
consultants in the geosciences, materials and the environment
Typical Boring Log
Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 33
consultants in the geosciences, materials and the environment
Typical CPT Log
consultants in the geosciences, materials and the environment
DESIGN PAVEMENT TEST SECTION
� 1 ¼ inches of ODOT Item 448 Asphalt Concrete Surface Course
� 2 ¾ inches of ODOT Item 448 Asphalt Concrete Intermediate
Surface Course, Type 2
� 6 inches of ODOT Item 301 Bituminous Base
� 10 inches of ODOT 304 Aggregate Base
� Calculated Equivalent Structural Number , SN = 5.08
consultants in the geosciences, materials and the environment
Boxes like this one maybe used for photo captions,
or for text in combination with images.
Project Location – Village of Cuyahoga Heights, OH
SAMPLE DESCRIPTION CBR P200MAX DRY DENSITY, PCF
ASTM D698
OPTIMUM MOISTURE
CONTENT, %
8521Subgrade FILL: Cinders, gravel,
brick & slag2 23 101 18
8454 Recycled Concrete --- 4.4 --- ---
8428 Foundry Sand 18 9.5 114 15
8525 304 RCA/FS Blend 34 7.9 119 13
8522 304 Crushed Limestone 55 11 141 6
consultants in the geosciences, materials and the environment
GRAIN SIZE DISTRIBUTIONS
Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 44
consultants in the geosciences, materials and the environment
BASE & ASPHALT COMPACTION
consultants in the geosciences, materials and the environment
Boxes like this one maybe used for photo captions,
or for text in combination with images.
Project Location – Village of Cuyahoga Heights, OH
MATERIAL COMPACTION MOISTURE
SUBGRADE 81% 20%
304 LIMESTONE 95% 5.60%
304 RCA/FS 99% 11%
consultants in the geosciences, materials and the environment
FWD EQUIPMENT
consultants in the geosciences, materials and the environment
FWD EQUIPMENT
Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 55
consultants in the geosciences, materials and the environment
FWD SECTION – IDEALIZED
consultants in the geosciences, materials and the environment
Average SN for LS 4.28 Average SN for RCA/FS 4.32
FWD RESULTS
LS RCA/FS
consultants in the geosciences, materials and the environment
SAMPLING LYSIMETERS
consultants in the geosciences, materials and the environment
Water Quantity Data Water Quality Parameters Analytical Data
Sample
Location,
Date
Height of
water in
lysimeter
(ft)
Estimated
Volume of
water in
lysimeter
(gal)
pHConductivity
(µS/cm)
Temperature
(Deg C)Arsenic (mg/l) Barium (mg/l)
Cadmium
(mg/l)
Chromium
(mg/l)
Lysimeter A,
12/23/2011 1.5 5 6.93 3,160 5.6 0.308 0.0134 <0.0010 <0.010
Lysimeter B,
12/23/2011 1.04 4.95 12.45 3,820 5.7 0.959 0.0794 0.00152 0.0369
Lysimeter A,
1/23/2012 1.34 5 7.42 929 5.5 0.154 <0.10 <0.10 <0.10
Lysimeter B,
1/23/2012 0.44 2.09 12.26 3,930 5.6 0.761 <0.10 <0.10 <0.10
Lysimeter A,
2/27/2012 1.34 5 6.87 766 6.2 0.102 <0.10 <0.10 <0.10
Lysimeter B,
2/27/2012 0.79 3.76 12.59 3,480 6.3 0.354 <0.10 <0.10 <0.10
Lysimeter A,
3/23/2012 1.21 5 8.08 637 17.0 0.227 <0.10 <0.10 <0.10
Lysimeter B,
3/23/2012 0.14 0.67 12.13 1,695 17.0 0.839 <0.10 <0.10 <0.10
ANALYTICAL RESULTS FROM LYSIMETERS
Field Demonstration of Blended Base Courses
John Dingeldein - 2012 Industrial Materials Conference - IndustrialResourcesCouncil.org 66
consultants in the geosciences, materials and the environment
SUMMARY
� The FWD data indicates that the RCA/FS blend for
base course functions as well as standard ODOT
304 crushed limestone when placed over the same subgrade materials.
� Refining of the RCA/FS gradation by more
controlled processing may produce an even better
base.
� The analytical results for metals are very similar for both materials but are higher for the RCA/FS
base. This may be due to less water flow through
the base.