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Stabilization of fine-grained soils with fly ash

Authors :
Vukićević, Mirjana
Pujević, Veljko
Marjanović, Miloš
Jocković, Sanja
Maraš-Dragojević, Snežana
Source :
Građevinar, Vol 67, Iss 08., Pp 761-770 (2015), Građevinar, Volume 67, Issue 08.
Publication Year :
2015
Publisher :
Croatian Association of Civil Engineers, 2015.

Abstract

U radu su prikazani rezultati laboratorijskog ispitivanja stabilizacije tla letećim pepelom bez primjene aktivatora. Ispitivane su dvije vrste sitnozrnatog tla: glina niske do srednje plastičnosti te vrlo ekspanzivna glina srednje do visoke plastičnosti. Mješavine tla i letećeg pepela su pripremljene s optimalnom količinom pepela (15 i 20 %). Ispitivan je utjecaj letećeg pepela na plastičnost tla, odnos vlage i gustoće, jednoosnu tlačnu čvrstoću, vrijednosti parametara posmične čvrstoće, vrijednosti CBR-a (California Bearing Ratio-CBR), deformacije i potencijal bujanja. Dobiveni rezultati pokazuju da primjena letećeg pepela može značajno poboljšati svojstva tla.<br />Results of laboratory research focusing on soil stabilization, using fly ash without activators, are presented in the paper. Two types of fine-grained soils were tested: low to medium plasticity clay and very expansive, medium to high plasticity clay. Soil-fly ash mixtures were prepared at optimum fly ash contents (15 and 20 %). The effects of fly ash on the soil plasticity, moisture-density relationship, unconfined compressive strength, shear strength parameters, CBR (California Bearing Ratio) values, deformation parameters, and swell potential, were evaluated. Results obtained show that the use uf fly ash can significantly contribute to the improvement of soil properties.

Details

Language :
English
ISSN :
13339095 and 03502465
Volume :
67
Issue :
08
Database :
OpenAIRE
Journal :
Građevinar
Accession number :
edsair.dedup.wf.001..49a8e00f21ebf2cf5293a27510452ae1