Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of the Workability of Soil-Bentonite Slurry-Trench Cutoff Walls
Soil-bentonite slurry-trench cutoff walls are used extensively as vertical engineered barriers for groundwater pollution control. The workability of soil-bentonite backfills used for these walls is an important design and construction consideration. In this study, a systematic analysis of extensive database reported in previous studies is made. It is found that bentonite content required to achieve workability in bentonite-water slurry decreases with increasing liquid limit of bentonite and then it remains constant at ~5% for bentonite with liquid limit of 400 to 600%. The water contents of backfills required to achieve target slump (-ΔH = 100 to 150 mm) can be estimated by an empirical equation established based on an apparent liquid limit of backfill calculated based on the proportions and liquid limits of individual constituents of the backfill. The results of this study are useful for preliminary estimation of the required bentonite content in the bentonite-water slurry and backfill water content to yield the target slump (workability).
Analysis of the Workability of Soil-Bentonite Slurry-Trench Cutoff Walls
Soil-bentonite slurry-trench cutoff walls are used extensively as vertical engineered barriers for groundwater pollution control. The workability of soil-bentonite backfills used for these walls is an important design and construction consideration. In this study, a systematic analysis of extensive database reported in previous studies is made. It is found that bentonite content required to achieve workability in bentonite-water slurry decreases with increasing liquid limit of bentonite and then it remains constant at ~5% for bentonite with liquid limit of 400 to 600%. The water contents of backfills required to achieve target slump (-ΔH = 100 to 150 mm) can be estimated by an empirical equation established based on an apparent liquid limit of backfill calculated based on the proportions and liquid limits of individual constituents of the backfill. The results of this study are useful for preliminary estimation of the required bentonite content in the bentonite-water slurry and backfill water content to yield the target slump (workability).
Analysis of the Workability of Soil-Bentonite Slurry-Trench Cutoff Walls
Fan, R. D. (Autor:in) / Du, Y. J. (Autor:in) / Liu, S. Y. (Autor:in) / Reddy, K. R. (Autor:in) / Yang, Y. L. (Autor:in)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 498-507
30.03.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Analysis of the Workability of Soil-Bentonite Slurry-Trench Cutoff Walls
| British Library Conference Proceedings | 2017
| British Library Online Contents | 2018