Stabilisation of expansive clays using granulated blast furnace slag (GBFS) and GBFS-Cement

Authors

Erdal Cokca, Middle East Technical University, Ankara, Turkey
Veysel Yazici, Design and Construction Department, State Hydraulic Works (DSI), Ankara, Turkey
Vehbi Ozaydin, University of Wollongong

RIS ID

29941

Publication Details

Cokca, E., Yazici, V. & Ozaydin, V. (2009). Stabilisation of expansive clays using granulated blast furnace slag (GBFS) and GBFS-Cement. Geotechnical and Geological Engineering: an international journal, 27 489-499.

Abstract

Expansive clays undergo swelling when subjected to water. This can cause damage, especially to light weight structures, water conveyance canals, lined reservoirs, highways, and airport runways unless appropriate measures are taken. In this study, granulated blast furnace slag (GBFS) and GBFS-cement (GBFSC) were utilized to overcome or to limit the expansion of an artificially prepared expansive soil sample (sample A). GBFS and GBFSC were added to sample A in proportions of 5–25% by weight. The effects of these stabilizers on grain size distribution, Atterberg limits, swelling percentage and rate of swell of soil samples were determined. GBFS and GBFSC were shown to successfully decreasing the total amount of swell while increasing the rate of swell.