- Title
- Large scale tests on the expansiveness of resin-injected clay
- Creator
- Fityus, S. G.; Buzzi, O.; Imre, E.
- Relation
- 5th Asia Pacific Conference on Unsaturated Soils (AP-UNSAT2011). Proceedings of the 5th Asia Pacific Conference on Unsaturated Soils (Pattaya, Thailand 14-15 November, 2011) p. 521-526
- Relation
- http://www.unsat.eng.ku.ac.th/Proceeding/index.html
- Publisher
- Thai Geotechnical Society
- Resource Type
- conference paper
- Date
- 2011
- Description
- The effects of resin injection on the expansiveness of a cracked expansive clay are difficult to ascertain. This paper presents the results of a laboratory study in which large scale oedometer tests were conducted on 12 samples, where 6 had been injected with expanding polyurethane resin, and 6 had not. A method of taking large (300mm diameter) samples using a thin walled tube pushed by a CPT truck, is described. Then, the procedure of testing these samples under a load of 25kPa using a large scale oedometer arrangement is described. The results indicate that contrary to expectation, resin injected samples generally seemed to swell less than non injected samples. The trends were not as clear as might be expected due to the inherent variability of the clay soils, but because of the large samples and large number of samples tested, a reliable conclusion can be drawn. Reasons for this unexpected outcome are discussed, and it is generally concluded that the process of injecting hard clays with an expanding resin may create more cracks than it fills.
- Subject
- expansive soil; resin injection; remediation; foundation; swelling
- Identifier
- http://hdl.handle.net/1959.13/1050467
- Identifier
- uon:15163
- Identifier
- ISBN:9786167522777
- Language
- eng
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