Highways Agency Report

             Shelfmark: SSR/TRL/WP161
       Personal author: Bolton M D
                 Title: Broadening the specification of granular fills
             Publisher: Transport and Road Research Laboratory, 1991
  Physical description: 20p., charts
                 Price: Unpriced
                Series: Working Paper:WP/SAU/6
       Notes - general: Abstract: Triaxial tests have been carried out on
                        fills that can be described as unconventional.  The
                        shear strengths of gap-graded fills, with 15% and 30%
                        of large particles in a fine matrix of sand, were
                        compared with the matrix alone at a range of relatie
                        densities.  It was found that when present at 30%, the
                        large particles provide additional strength whereas at
                        15%, they have an adverse effect.  Possible mechanisms
                        for these phenomena are discussed.  Strength
                        enhancement was still available when the "large"
                        particles were of poor quality, friable limestone.
                        These laboratory trials suggest that a more flexible
                        specification for fill could lead to significant
                        economies, but further field tests will be required
                        for confirmation.
               Keyword: Embankment
 TRRL WORKING PAPER
  copy:1       id:54046000301026      library:SSR          location:SSR-SHELF