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https://www.sciencedirect.com/science/article/pii/S0038080615001717
Therefore, the used bentonite fluid was exchanged at the end of the excavation – a step which is typically required when excavating in sand under a bentonite support fluid. If this had not been carried out, the coarse particles in the fluid could have settled to the pile base to form a ‘soft toe’.Cited by: 5
https://www.fps.org.uk/content/uploads/2017/05/Bentonite-Jan-2006.pdf
made as to whether or not a particular bentonite will produce a satisfactory support fluid, and to give guidance on the preparation, use, re-use and disposal of the bentonite slurry, and also on methods of testing. Since the first edition of this guide the use of polymer support fluids as an alternative to bentonite has become relatively common.
https://www.semanticscholar.org/paper/Effects-of-polymer-and-bentonite-support-fluids-on-Lam-Jefferis/6f2e81cf03492b5ad386d3284efc0cfc7b71f4e0
Specifications for the use of these fluids vary, and a thorough understanding of their effect on pile shaft resistance has not yet been developed. This paper presents the results of a set of concrete–sand interface shear tests carried out using both polymer and bentonite support fluids, with water as a reference fluid.
https://www.researchgate.net/publication/260793588_Effects_of_polymer_and_bentonite_support_fluids_on_concrete-sand_interface_shear_strength
Some piles, using bentonite support fluid, needed to be constructed within the tunnel exclusion zones, which required a concession from London Underground. This paper presents the Osterberg-cell ...
https://www.research.manchester.ac.uk/portal/files/24928617/POST-PEER-REVIEW-PUBLISHERS.PDF
Effects of polymer and bentonite support ßuids on concreteÐsand interface shear strength C. LAM ,S.A.JEFFERIS andC.M.MARTINà Support ßuids are widely used for the construction of deep bored piles and diaphragm walls. SpeciÞcations for the use of these ßuids vary, and a thorough understanding of their effect on pile ... Bentonite support ...
https://www.researchgate.net/publication/284930326_Effects_of_polymer_and_bentonite_support_fluids_on_the_performance_of_bored_piles
Effects of polymer and bentonite support fluids on the performance of bored piles Article (PDF Available) in Soils and Foundations -Tokyo- 55(6) · November 2015 …
http://www.cfms-sols.org/sites/default/files/Actes/3219-3222.pdf
Polymer support fluids: use and misuse of innovative fluids in geotechnical works Les polymères: l'utilisation de nouveaux fluides de forage en travaux géotechnique ... constructed under a polymer fluid and one under bentonite. The difference between the two polymer piles was the pile bore open
https://www.research.manchester.ac.uk/portal/files/33805679/FULL_TEXT.PDF
following requirements are essential for all support fluids. The fluid should not damage the setting and hardening of concrete, damage concrete-steel bond or be lost to the ground to an excessive degree. The construction process The principal stages of all fluid supported excavation processes are: Preparation of excavation fluid (bentonite slurry -Cited by: 1
https://en.wikipedia.org/wiki/Bentonite
Bentonite is also sold online and in retail outlets for a variety of indications. Bentoquatam is a bentonate-based topical medication intended to act as a shield against exposure to urushiol, the oil found in plants such as poison ivy or poison oak. Bentonite can also be …
https://www.icevirtuallibrary.com/doi/full/10.1680/geot.13.P.012
May 25, 2015 · Bentonite support fluids have been used for the construction of diaphragm walls and bored piles since the pioneering work of Veder (1953).It is now known that in permeable soils such as sand and gravel, the stabilising mechanism involves the formation of a filter cake on the side walls.Cited by: 17
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