Sustainability of combined vacuum and surcharge preloading
Item Type:Conference Paper
Citation:Griffin H. and O'Kelly B.C., Sustainability of combined vacuum and surcharge preloading, Proceedings of the 2014 Geo-Congress: Geo-Characterization and Modeling for Sustainability, Atlanta, Georgia, USA, 23 26 February 2014, Abu-Farsakh M., Yu X. and Hoyos L.R., GSP 234, American Society of Civil Engineers, Reston, VA, USA, 2014, 3826 - 3835
This paper presents a review of combined vacuum consolidation and surcharge preloading which is arguably more sustainable approach to soft-soil ground improvement than other strategies in reducing post-construction settlements. Vacuum consolidation has become more prevalent with technological developments in vertical drains, pumps and geosynthetics. Satisfactory vacuum pressures can be sustained at greater depths and for longer periods than in the recent past. Soft soil deposits may experience different issues depending on whether vacuum or surcharge preloading is employed. Surcharging alone may lead to outward lateral deformations and shear failure whereas vacuum alone induces inward lateral deformations, producing crack formation along the boundaries of the treatment area. By balancing these two approaches, respective outward and inward ground movements can be minimised.
Atlanta, Georgia, USA
Author: O'Kelly, Brendan C.
Other Titles:Proceedings of the 2014 Geo-Congress: Geo-Characterization and Modeling for Sustainability
Publisher:American Society of Civil Engineers, Reston, VA, USA
Type of material:Conference Paper
Series/Report no:GSP 234
Availability:Full text available
Subject (TCD):Smart & Sustainable Planet