Počet záznamů: 1
Strength and dilatancy of sand before and after stabilisation with colloidal-silica gel
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SYSNO ASEP 0559046 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Strength and dilatancy of sand before and after stabilisation with colloidal-silica gel Tvůrce(i) Triantafyllos, P.K. (GR)
Georgiannou, V.N. (GR)
Pavlopoulou, E.M. (GR)
Dafalias, Yannis F. (UT-L)Celkový počet autorů 4 Zdroj.dok. Geotechnique. - : Institution of Civil Engineers - ISSN 0016-8505
Roč. 72, č. 6 (2022), s. 471-485Poč.str. 14 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova fabric/structure of soils ; laboratory tests ; sands ; shear strength ; soil stabilisation Vědní obor RIV JN - Stavebnictví Obor OECD Materials engineering CEP EF15_003/0000493 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup UT WOS 000803602000001 EID SCOPUS 85119185222 DOI 10.1680/jgeot.19.P.123 Anotace To evaluate the effect of stabilisation by using a colloidal silica aqueous gel on the subsequent behaviour of sand, the dilatancy and peak and ultimate strength characteristics of M31 sand were investigated before and after stabilisation. Triaxial compression tests were performed in drained and undrained mode, at effective stresses ranging from 100 to 6000 kPa. Important changes in the sand's mechanical behaviour were observed after stabilisation, including a significant increase in stress ratio and dilatancy rate at peak and a relocation of the treated sand's critical state line in the e–p′ plane, substantially above that manifested by the untreated sand, however, the two lines converged at high stresses. The results confirm a state-dependent behaviour for the sand that is not applicable to the treated sand, which exhibits predominantly stress-dependent behaviour. A modified state parameter was used to normalise the treated sand's behaviour at peak failure. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2023 Elektronická adresa https://www.icevirtuallibrary.com/doi/10.1680/jgeot.19.P.123
Počet záznamů: 1