Improving Resilient Modulus Test Procedures for Unbound Materials

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General Information
Solicitation Number: 814
Status: Solicitation withdrawn
Date Posted: Sep 05, 2003
Last Updated: Oct 01, 2004
Solicitation Expires: Sep 05, 2004
Partners: AL, CA, NY, PADOT, TX
Lead Organization: Federal Highway Administration
Financial Summary
Commitment Start Year: 2004
Commitment End Year: 2009
100% SP&R Approval: Approved
Commitments Required: $500,000.00
Commitments Received: $250,000.00
Contact Information
Lead Study Contact(s): David Pamplin
david.pamplin@dot.gov
FHWA Technical Liaison(s): Robert Baumgardner
bob.baumgardner@fhwa.dot.gov
Phone: 202-366-4612
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Alabama Department of Transportation 2004 $50,000.00 Jeff Brown Robert Brown 334-242-6413 brownb@dot.state.al.us
California Department of Transportation 2004 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2005 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2006 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2007 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
New York State Department of Transportation 2004 $50,000.00 Makbul Hossain Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
Pennsylvania Department of Transportation 2004 $10,000.00 Roy Trout
Pennsylvania Department of Transportation 2005 $20,000.00 Roy Trout
Pennsylvania Department of Transportation 2006 $20,000.00 Roy Trout
Texas Department of Transportation 2004 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2005 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2006 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2007 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2008 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2009 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us

Background

The resilient modulus of a soil or unbound aggregate material is the recoverable stress/strain relationship of the soil. The greater the resilient modulus of the soils is; the "stiffer" the soil will be, and the greater the strength will be for supporting transmitted wheel loads. This parameter is considered to be the best indicator of a subgrade's strength since the test replicates the dynamics of moving wheel loads.

The new 2002 AASHTO Design Guide for Pavement Structures requires that the resilient modulus of the subgrade be used to design the pavement thickness for both asphalt concrete and PCC concrete pavements. Due to the complexity of the test, test results have been inconsistent. For example, data to date has shown that:

· Two different laboratories testing split samples of the same soil or aggregate layer get widely different results.

· Two technicians on the same equipment would also get widely different results.

· Repeated tests on the same sample by one technician on the same equipment would not always produce consistent results.

Objectives

This pooled fund study has two primary goals:

1. To reduce the variability currently associated with resilient modulus testing of unbound materials.

2. To conduct a precision and bias study of the test procedure.

Scope of Work

See attached.

Comments

Approximate amount of funding requested per State is $50K.

Documents Attached
Title File/Link Type Privacy Download
Improving Resilient Modulus Test Procedures for Unbound Materials 814.pdf Solicitation Public

Improving Resilient Modulus Test Procedures for Unbound Materials

General Information
Solicitation Number: 814
Status: Solicitation withdrawn
Date Posted: Sep 05, 2003
Last Updated: Oct 01, 2004
Solicitation Expires: Sep 05, 2004
Partners: AL, CA, NY, PADOT, TX
Lead Organization: Federal Highway Administration
Financial Summary
Commitment Start Year: 2004
Commitment End Year: 2009
100% SP&R Approval: Approved
Commitments Required: $500,000.00
Commitments Received: $250,000.00
Contact Information
Lead Study Contact(s): David Pamplin
david.pamplin@dot.gov
FHWA Technical Liaison(s): Robert Baumgardner
bob.baumgardner@fhwa.dot.gov
Phone: 202-366-4612
Commitments by Organizations
Agency Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Alabama Department of Transportation 2004 $50,000.00 Jeff Brown Robert Brown 334-242-6413 brownb@dot.state.al.us
California Department of Transportation 2004 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2005 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2006 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
California Department of Transportation 2007 $10,000.00 Tom Pyle Osama Elhamshary Osama_Elhamshary@dot.ca.gov
New York State Department of Transportation 2004 $50,000.00 Makbul Hossain Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
Pennsylvania Department of Transportation 2004 $10,000.00 Roy Trout
Pennsylvania Department of Transportation 2005 $20,000.00 Roy Trout
Pennsylvania Department of Transportation 2006 $20,000.00 Roy Trout
Texas Department of Transportation 2004 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2005 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2006 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2007 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2008 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us
Texas Department of Transportation 2009 $10,000.00 Mike Arrelano Martha Norwood 512-465-7404 MNorwood@dot.state.tx.us

Background

The resilient modulus of a soil or unbound aggregate material is the recoverable stress/strain relationship of the soil. The greater the resilient modulus of the soils is; the "stiffer" the soil will be, and the greater the strength will be for supporting transmitted wheel loads. This parameter is considered to be the best indicator of a subgrade's strength since the test replicates the dynamics of moving wheel loads.

The new 2002 AASHTO Design Guide for Pavement Structures requires that the resilient modulus of the subgrade be used to design the pavement thickness for both asphalt concrete and PCC concrete pavements. Due to the complexity of the test, test results have been inconsistent. For example, data to date has shown that:

· Two different laboratories testing split samples of the same soil or aggregate layer get widely different results.

· Two technicians on the same equipment would also get widely different results.

· Repeated tests on the same sample by one technician on the same equipment would not always produce consistent results.

Objectives

This pooled fund study has two primary goals:

1. To reduce the variability currently associated with resilient modulus testing of unbound materials.

2. To conduct a precision and bias study of the test procedure.

Scope of Work

See attached.

Comments

Approximate amount of funding requested per State is $50K.

Title Type Private
Improving Resilient Modulus Test Procedures for Unbound Materials Solicitation N

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