Agency TRANSPORTATION DEPT

Contractor Minnesota State University - Mankato

SWIFT Contract Number 3000030859

Project Name Subgrade Stabilization ME Properties Evaluation &

Project Number (if applicable) 94080

Summarize purpose of the contract, including why it was necessary: This project is intended to be a combination of a review of literature with respect to material stabilization techniques as well as a study to consolidate the design properties of such improved materials (from both field and laboratory testing in previous research) in order to come up with useable design parameters for various stabilization materials and techniques. Review will be performed for Mechanistic Empirical Pavement Design Guide (MEPDG), MnPAVE and Mn/DOT resilient modulus data to ensure that the resilient modulus proposed is consistent with existing values and can be used in design. Some additional laboratory or fieldwork could be requested by the Technical Advisory Panel (TAP), as needed, but existing data from current/past projects will be the primary source of data. The literature review will relate to various applications of stabilization, specifically, literature sources that provide information regarding various materials and/or methods that are currently being used to facilitate stabilization for highway applications. This will require many hours of literature review to provide and compile the appropriate references and research reports. Research hours will also be spent contacting Mn/DOT, Minnesota County Engineers and other entities to determine which techniques they may currently be using or may have used in the past to discuss how effective (or ineffective) such techniques have been. Assessment of past research efforts will attempt to determine or estimate ME properties of the construction materials. MSU’s Principal Investigator (PI) will compile a list of materials and methods used, explain how effective such methods have been in serving their intended purpose, provide the material properties to be used in pavement and road design, and prepare the final report detailing such methods to be distributed to the parties interested in such information. A life cycle cost analysis will be performed to estimate the cost-effectiveness of various methods/materials. Where data exists, MSU will perform an assessment of any changes in strength for the materials examined, showing if/how the strength changes over time.

Project Duration

Start Date Tue, 05/04/2010 - 00:00

Original end date Sat, 06/30/2012 - 00:00

Actual end date Thu, 06/28/2012 - 00:00

Did project finish on time? Yes

Total billable hours utilized (if applicable) {Empty}

Contract Amounts

Original contract: $44369.00

Amendments {Empty}

Contract total $44369.00

Did project finish within budget? Yes

What was the funding source? Trunk Highway

Is this a sole source contract? No

If this was a single source contract, explain why the agency determined there was only a single source for the services (if applicable) {Empty}

Evaluator Name Shongtao Dai

Evaluator Email Address Shongtao.dai@state.mn.us

Evaluate the contractor's timeliness Good

Evaluate the contractor's quality Good

Evaluate the contractor's cost Good

Evaluate the contractor's overall performance Good

Would you engage the contractor's services again? Yes

Describe any negative action taken during the duration of this contract (i.e., termination, pursuit of suspension, etc.): {Empty}

Please rate the overall experience with the contractor 5 - very satisfied