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The geomechanical properties of soils treated with nanosilica particles

Journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 954-969页

作者： Gizem Aksu tugba eskisar Asia Prefabrik Ltd.Co. KemalpasaIzmir35730Turkey Department of Civil Engineering Ege UniversityBornovaIzmir35100Turkey

This study examines the effect of nanosilica(NS)additive to improve the mechanical properties of clay,clayey sand,and *** engineering properties of the soils were investigated through Atterberg limits,compaction,unconfined compression,ultrasonic pulse velocity(UPV),freeze-thaw,and direct shear *** NS content varied from 0%to 0.7%and cement content was 5%and 10%by the dry weight of the *** curing period varied from 7 d to 150 *** consistency,compaction,and strength properties of the soils were affected by the presence of NS and *** optimum NS contents in clay specimens with 5%and 10%cement were 0.5%and 0.7%,*** was 0.7%in sand specimens with both cement ratios,as well as 0.3%and 0.7%in clayey sand specimens with 5%and 10%cement,*** terms of freeze-thaw resistance,clayey sand specimens containing 0.5%NS and 10%cement had the minimum strength *** relationships existed between the ultrasonic pulse velocity(UPV)and the unconfined compressive strength(UCS)of soil specimens having the same curing *** shear strength parameters of the soils also improved with the addition of *** electron microscope(SEM)images demonstrated that cement and NS contributed to the improvement of the soils by producing a denser and more uniform *** was concluded that the minor addition of NS could potentially improve the geomechanical properties of the soils.

关键词： Nanosilica(NS) Atterberg limits Compaction Unconfined compressive strength(UCS) Ultrasonic pulse velocity(UPV) Freeze-thaw

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