Financial Summary |
|
Contract Amount: | |
Suggested Contribution: | |
Total Commitments Received: | $360,000.00 |
100% SP&R Approval: | Approved |
Contact Information |
|||
Lead Study Contact(s): | Brian Diefenderfer | ||
Brian.Diefenderfer@VDOT.Virginia.gov | |||
Phone: 434-293-1944 | |||
FHWA Technical Liaison(s): | James Sherwood | ||
Jim.Sherwood@dot.gov | |||
Phone: 202- 493-3150 |
Organization | Year | Commitments | Technical Contact Name | Funding Contact Name |
---|---|---|---|---|
Idaho Department of Transportation | 2010 | $30,000.00 | Mark Wheeler | Amanda Laib |
Idaho Department of Transportation | 2011 | $30,000.00 | Mark Wheeler | Amanda Laib |
Idaho Department of Transportation | 2012 | $30,000.00 | Mark Wheeler | Amanda Laib |
Oklahoma Transportation | 2010 | $30,000.00 | Josh Randell | Beckie Lyons |
Oklahoma Transportation | 2011 | $30,000.00 | Josh Randell | Beckie Lyons |
Oklahoma Transportation | 2012 | $30,000.00 | Josh Randell | Beckie Lyons |
Virginia Department of Transportation | 2010 | $30,000.00 | Brian Diefenderfer | Bill Kelsh |
Virginia Department of Transportation | 2011 | $30,000.00 | Brian Diefenderfer | Bill Kelsh |
Virginia Department of Transportation | 2012 | $30,000.00 | Brian Diefenderfer | Bill Kelsh |
Virginia Department of Transportation | 2013 | $0.00 | Brian Diefenderfer | Bill Kelsh |
Wisconsin Department of Transportation | 2010 | $30,000.00 | Laura Fenley | Lynn Hanus |
Wisconsin Department of Transportation | 2011 | $30,000.00 | Laura Fenley | Lynn Hanus |
Wisconsin Department of Transportation | 2012 | $30,000.00 | Laura Fenley | Lynn Hanus |
Wisconsin Department of Transportation | 2013 | $0.00 | Laura Fenley | Lynn Hanus |
Recent research projects in Virginia and several national projects have focused on the design, construction, and evaluation of the drainage layers. The conclusions of these projects are sometimes controversial. One of the challenges to evaluate the effectiveness of drainage layers (in terms of their structural contribution to the overall pavement structure) lies in the difficulty in determining the causes of observed phenomenological distresses to the drainage layers. Typically a core should be acquired to determine whether the distress to the pavement is caused, or in some part contributed to, by the drainage layer. Indirect methods such as the Falling Weight Deflectometer (FWD) tests cannot often directly determine whether the failures come from the drainage layer. In the 1993 AASHTO pavement design guide, the contribution of the drainage layer to pavement structure is not considered. Some states follow this approach and do not give the drainage layer a structural layer coefficient while others do. In the MEPDG, while every layer can be separately evaluated, there is no procedure developed to characterize the fundamental properties of these drainage layers, which are usually composed of high porosity asphalt concrete or granular materials with porosities ranging from 20% to 35%. With these high porosities, the elastic modulus and the strength of these materials are relatively much lower than those of the traditional dense-graded materials. Also, it is quite difficult in preparing lab specimens at such high porosities. A need exists to develop methods or modify existing methods to characterize the elastic modulus and strength of these materials at high porosity, to perform analysis of the stability and failure of the drainage layer in the pavement structure, and to specify the required minimum porosity for effective drainage.
The objectives of the pooled fund study are to develop methods to characterize the elastic modulus and strength of drainage layers for MEPDG, to perform analysis of the stability and failure of the drainage layer in the pavement structure, and to develop specifications for required minimum porosity for effective drainage.
The scope of the work includes the following. 1. Develop testing methods or modify/adapt existing methods to characterize the elastic modulus and strength of asphalt concrete, other bounded materials or granular materials at high porosity. It is anticipated that triaxial tests and a portable ultrasound test device will be used. 2. Perform pavement analysis to evaluate how the drainage layers will perform/fail in a typical pavement structure under typical traffic loading. 3. Conduct a national survey on the requirements of the percent porosity of the drainage layer and its effectiveness in providing adequate drainage, and on general practice of drainage design, construction and evaluation. 4. Based on 1, 2 and 3, formulate recommendations of material properties and methods for failure predictions of drainage layers for MEPDG. It is anticipated that default values, empirical correlations, and testing procedures will be recommended for the material properties. The testing procedures will be formulated into AASHTO format for review and adoption. The pooled fund study will solicit the participation of about ten states and/or agencies. The typical pavement structure, drainage layer designs of these states will be collected and analyzed. The materials from these states will be characterized.
This study is of high significance. First, drainage is critical to the long life of pavements. Second, if contribution to pavement structure by drainage layer is not considered, it may result in an over design. Third, if drainage layer is not well constructed it may cause premature failures of the pavement structure. It is anticipated that the pooled fund study will take three years to accomplish. For each year, each participating state/agency is suggested to contribute $30,000
No document attached.
General Information |
|
Study Number: | TPF-5(229) |
Lead Organization: | Virginia Department of Transportation |
Contract Start Date: | Sep 01, 2010 |
Solicitation Number: | 1225 |
Partners: | ID, OK, VA, WI |
Status: | Closed |
Est. Completion Date: | Aug 31, 2013 |
Contract/Other Number: | |
Last Updated: | Oct 06, 2016 |
Contract End Date: | Aug 31, 2013 |
Financial Summary |
|
Contract Amount: | |
Total Commitments Received: | $360,000.00 |
100% SP&R Approval: |
Contact Information |
|||
Lead Study Contact(s): | Brian Diefenderfer | ||
Brian.Diefenderfer@VDOT.Virginia.gov | |||
Phone: 434-293-1944 | |||
FHWA Technical Liaison(s): | James Sherwood | ||
Jim.Sherwood@dot.gov | |||
Phone: 202- 493-3150 |
Organization | Year | Commitments | Technical Contact Name | Funding Contact Name | Contact Number | Email Address |
---|---|---|---|---|---|---|
Idaho Department of Transportation | 2010 | $30,000.00 | Mark Wheeler | Amanda Laib | 208-334-8181 | amanda.laib@itd.idaho.gov |
Idaho Department of Transportation | 2011 | $30,000.00 | Mark Wheeler | Amanda Laib | 208-334-8181 | amanda.laib@itd.idaho.gov |
Idaho Department of Transportation | 2012 | $30,000.00 | Mark Wheeler | Amanda Laib | 208-334-8181 | amanda.laib@itd.idaho.gov |
Oklahoma Transportation | 2010 | $30,000.00 | Josh Randell | Beckie Lyons | blyons@odot.org | |
Oklahoma Transportation | 2011 | $30,000.00 | Josh Randell | Beckie Lyons | blyons@odot.org | |
Oklahoma Transportation | 2012 | $30,000.00 | Josh Randell | Beckie Lyons | blyons@odot.org | |
Virginia Department of Transportation | 2010 | $30,000.00 | Brian Diefenderfer | Bill Kelsh | 434-293-1934 | Bill.Kelsh@VDOT.Virginia.gov |
Virginia Department of Transportation | 2011 | $30,000.00 | Brian Diefenderfer | Bill Kelsh | 434-293-1934 | Bill.Kelsh@VDOT.Virginia.gov |
Virginia Department of Transportation | 2012 | $30,000.00 | Brian Diefenderfer | Bill Kelsh | 434-293-1934 | Bill.Kelsh@VDOT.Virginia.gov |
Virginia Department of Transportation | 2013 | $0.00 | Brian Diefenderfer | Bill Kelsh | 434-293-1934 | Bill.Kelsh@VDOT.Virginia.gov |
Wisconsin Department of Transportation | 2010 | $30,000.00 | Laura Fenley | Lynn Hanus | 608-267-2294 | lynnm.hanus@dot.wi.gov |
Wisconsin Department of Transportation | 2011 | $30,000.00 | Laura Fenley | Lynn Hanus | 608-267-2294 | lynnm.hanus@dot.wi.gov |
Wisconsin Department of Transportation | 2012 | $30,000.00 | Laura Fenley | Lynn Hanus | 608-267-2294 | lynnm.hanus@dot.wi.gov |
Wisconsin Department of Transportation | 2013 | $0.00 | Laura Fenley | Lynn Hanus | 608-267-2294 | lynnm.hanus@dot.wi.gov |
Recent research projects in Virginia and several national projects have focused on the design, construction, and evaluation of the drainage layers. The conclusions of these projects are sometimes controversial. One of the challenges to evaluate the effectiveness of drainage layers (in terms of their structural contribution to the overall pavement structure) lies in the difficulty in determining the causes of observed phenomenological distresses to the drainage layers. Typically a core should be acquired to determine whether the distress to the pavement is caused, or in some part contributed to, by the drainage layer. Indirect methods such as the Falling Weight Deflectometer (FWD) tests cannot often directly determine whether the failures come from the drainage layer. In the 1993 AASHTO pavement design guide, the contribution of the drainage layer to pavement structure is not considered. Some states follow this approach and do not give the drainage layer a structural layer coefficient while others do. In the MEPDG, while every layer can be separately evaluated, there is no procedure developed to characterize the fundamental properties of these drainage layers, which are usually composed of high porosity asphalt concrete or granular materials with porosities ranging from 20% to 35%. With these high porosities, the elastic modulus and the strength of these materials are relatively much lower than those of the traditional dense-graded materials. Also, it is quite difficult in preparing lab specimens at such high porosities. A need exists to develop methods or modify existing methods to characterize the elastic modulus and strength of these materials at high porosity, to perform analysis of the stability and failure of the drainage layer in the pavement structure, and to specify the required minimum porosity for effective drainage.
The objectives of the pooled fund study are to develop methods to characterize the elastic modulus and strength of drainage layers for MEPDG, to perform analysis of the stability and failure of the drainage layer in the pavement structure, and to develop specifications for required minimum porosity for effective drainage.
The scope of the work includes the following. 1. Develop testing methods or modify/adapt existing methods to characterize the elastic modulus and strength of asphalt concrete, other bounded materials or granular materials at high porosity. It is anticipated that triaxial tests and a portable ultrasound test device will be used. 2. Perform pavement analysis to evaluate how the drainage layers will perform/fail in a typical pavement structure under typical traffic loading. 3. Conduct a national survey on the requirements of the percent porosity of the drainage layer and its effectiveness in providing adequate drainage, and on general practice of drainage design, construction and evaluation. 4. Based on 1, 2 and 3, formulate recommendations of material properties and methods for failure predictions of drainage layers for MEPDG. It is anticipated that default values, empirical correlations, and testing procedures will be recommended for the material properties. The testing procedures will be formulated into AASHTO format for review and adoption. The pooled fund study will solicit the participation of about ten states and/or agencies. The typical pavement structure, drainage layer designs of these states will be collected and analyzed. The materials from these states will be characterized.
This study is of high significance. First, drainage is critical to the long life of pavements. Second, if contribution to pavement structure by drainage layer is not considered, it may result in an over design. Third, if drainage layer is not well constructed it may cause premature failures of the pavement structure. It is anticipated that the pooled fund study will take three years to accomplish. For each year, each participating state/agency is suggested to contribute $30,000
Title | File/Link | Type | Private |
---|---|---|---|
TPF-5(229) Closeout Letter | TPF-5(229) Closeout Letter - Signed.pdf | Other | Public |
TPF-5(229) Closeout Funding Spreadsheet | TPF-5(229) Closeout Funding Spreadsheet.pdf | Other | Public |
final report | TPF-5(229) Wang - MEPDG Drainage Layers - Final Report - 06-23-2016.pdf | Deliverable | Public |
January-March 2016 | Quartly report_03-31-2016.docx | Progress Report | Public |
October-December 2015 | Quartly report_12-31-2015.docx | Progress Report | Public |
January-March 2014 | Quartly report_04-30-2014-April14.docx | Progress Report | Public |
October-December 2012 | Quarterly Report-20130125-revised.pdf | Progress Report | Public |
July-September 2012 | Quarterly Report-20121024.pdf | Progress Report | Public |
April-June 2012 | Quartly report-20120709.pdf | Progress Report | Public |
January-March 2012 | quarterly report-20120430.pdf | Progress Report | Public |
October-December 2011 | TPF-5(229) QR #4.pdf | Progress Report | Public |
Quarterly Report: July-September 2011 | TPF 5(229) Quarterly Report_111025.pdf | Progress Report | Public |
Quarterly Report: 2011 April - June | TPF-5_229_Quarterly_Report-July-2011.pdf | Progress Report | Public |
Quarterly Report: 2011 January - March | TPF-5_229_Quarterly_Report(2011_Jan-Mar).pdf | Progress Report | Public |
Acceptance Memo | AcceptanceMemo.pdf | Memorandum | Public |