American Association of State Highway and Transportation Officials, American Association of State Highway and Transportation Officials, AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials, & AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials. (1990). Guidelines and guide specifications for "using pozzolanic stabilized mixture (base course or subbase) and fly ash for in place subgrade soil modification": Task Force 28. Washington, D.C.: American Association of State Highway and Transportation Officials.

American Association of State Highway and Transportation Officials, American Association of State Highway and Transportation Officials, AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials, and AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials. Guidelines and Guide Specifications for "using Pozzolanic Stabilized Mixture (base Course or Subbase) and Fly Ash for in Place Subgrade Soil Modification": Task Force 28. Washington, D.C.: American Association of State Highway and Transportation Officials, 1990.

American Association of State Highway and Transportation Officials, American Association of State Highway and Transportation Officials, AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials, and AASHTO/AGC/ARTBA Joint Committee. Subcommitte on New Highway Materials. Guidelines and Guide Specifications for "using Pozzolanic Stabilized Mixture (base Course or Subbase) and Fly Ash for in Place Subgrade Soil Modification": Task Force 28. Washington, D.C.: American Association of State Highway and Transportation Officials, 1990.