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The National Academies

NCHRP 20-07/Task 236 [Completed]

Modification and Stabilization of Soils and Base for Use in Pavement Structures
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Funds: $75,000
Research Agency: Texas Transportation Institute
Principal Investigator: Dallas Little
Effective Date: 4/16/2007
Completion Date: 7/31/2009
Comments: The project final report is available as NCHRP Web Only Documents 144 and 145.

This project developed two new draft standard practices in AASHTO format related to the stabilization and modification of subgrade soils and base and recommended revisions to AASHTO standard test method T 290, Determining Water-Soluble Sulfate Ion Content in Soil:  NCHRP Web-Only Document 144: Recommended Practice for Stabilization of Subgrade Soils and Base Materials and NCHRP Web-Only Document 145: Recommended Practice for Stabilization of Sulfate Rich Subgrade Soils.

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