Laboratory determination of mechanical and hydraulic properties of chemically grouted sands
| Autor: | Raffaella Granata, D. Porcino, Vito Nicola Ghionna, Vincenzo Marcianò |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Constant flow
Grout 0211 other engineering and technologies Stiffness 020101 civil engineering 02 engineering and technology engineering.material Geotechnical Engineering and Engineering Geology Silicate 0201 civil engineering Shear modulus Laboratory test Permeability (earth sciences) chemistry.chemical_compound chemistry Hydraulic conductivity medicine engineering Geotechnical engineering medicine.symptom Geology 021101 geological & geomatics engineering |
| Zdroj: | Geomechanics and Geoengineering. 11:164-175 |
| ISSN: | 1748-6033 1748-6025 |
| Popis: | The purpose of this paper is to investigate mechanical and hydraulic properties of sands treated with mineral-based grouts through the results of a laboratory test programme consisting of unconfined compression tests (UCS), triaxial bender element tests (BeT) and constant flow permeability tests in triaxial apparatus. An improved apparatus was set up for obtaining high quality, multiple grouted specimens from a single column. Two selected natural sands having different grain sizes were grouted with two mineral-based silica grouts, resulting in different levels of improvement. The behaviour of the sands treated by mineral grouts, in terms of strength, initial stiffness and permeability, was compared with that exhibited by more traditional silicate grouts. The results of this study indicate that sands treated with mineral grouts result in higher strengths, higher initial shear modulus and lower permeability values than the sands treated with the silicate solution. The effect of grout type, effective confini... |
| Databáze: | OpenAIRE |
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