A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Specifications for Backfill of Reinforced-Earth Retaining Walls
The objectives of this project were to examine and determine the various factors which affect the compaction of granular soils, specifically, the compaction of granular soils, specifically, the compaction characteristics of fine cohesionless sands, as this is the type of soil commonly used in Texas for mechanically stabilized earth (MSE) retaining wall systems, but for which standard compaction procedures have been found to be inadequate. Specific objectives included: (1) determining the current problems with MSE retaining wall systems, and specifically to determine what effect the backfill type and the compaction of the backfill may have on the stability of MSE retaining wall systems; (2) investigating the current Texas Department of Transportation (TxDOT) procedures and specifications for use of structural backfill soils to determine if they are sufficient or if recommendations for changes are justified; (3) investigating the importance of the water content, grain size distribution of the particles, grading of the soil, grain shape of the particles, and grain crushing during testing on the effectiveness of laboratory compaction; (4) determining the effect of three different laboratory compaction procedures (i.e., Standard Proctor, Modified Proctor, and the Vibrating Hammer tests) on the compaction of cohesionless sands; (5) correlating the various factors with the different compaction tests; (6) comparing the results of this study with results in the literature and other sands to determine the applicability of the results obtained; (7) estimating the maximum possible settlement of a compacted soil from the results of various compaction tests; (8) revising TxDOT specifications for backfill and the associated field compaction specifications.
Specifications for Backfill of Reinforced-Earth Retaining Walls
The objectives of this project were to examine and determine the various factors which affect the compaction of granular soils, specifically, the compaction of granular soils, specifically, the compaction characteristics of fine cohesionless sands, as this is the type of soil commonly used in Texas for mechanically stabilized earth (MSE) retaining wall systems, but for which standard compaction procedures have been found to be inadequate. Specific objectives included: (1) determining the current problems with MSE retaining wall systems, and specifically to determine what effect the backfill type and the compaction of the backfill may have on the stability of MSE retaining wall systems; (2) investigating the current Texas Department of Transportation (TxDOT) procedures and specifications for use of structural backfill soils to determine if they are sufficient or if recommendations for changes are justified; (3) investigating the importance of the water content, grain size distribution of the particles, grading of the soil, grain shape of the particles, and grain crushing during testing on the effectiveness of laboratory compaction; (4) determining the effect of three different laboratory compaction procedures (i.e., Standard Proctor, Modified Proctor, and the Vibrating Hammer tests) on the compaction of cohesionless sands; (5) correlating the various factors with the different compaction tests; (6) comparing the results of this study with results in the literature and other sands to determine the applicability of the results obtained; (7) estimating the maximum possible settlement of a compacted soil from the results of various compaction tests; (8) revising TxDOT specifications for backfill and the associated field compaction specifications.
Specifications for Backfill of Reinforced-Earth Retaining Walls
D. V. Morris (author) / J. G. Delphia (author)
1999
204 pages
Report
No indication
English
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