1 (800) 456-6548 Vibro concrete columns Share Related techniques Typically used for This technique involves the construction of concrete columns with a bottom-feed, down-hole vibratory probe to transfer loads through weak strata to a firm underlying stratum. Common uses Reduce foundation settlement Increase bearing capacity, allowing reduction in footing size Increase stiffness Increase shear strength Reduce permeability Mitigate potential for liquefaction Provide slope stabilization Process A bottom-feed, down-hole vibratory probe is advanced through the weak strata to the underlying firm stratum. Granular bearing soils are densified by the vibrator. Concrete is then pumped through the bottom-feed tremie tube. The vibrator is raised and lowered several times within the bearing depth to construct an expanded base. The vibrator is then raised to the surface as concrete fills the void created by the vibrator during extraction. Typically, the vibrator also re-penetrates the top of the column to construct an enlarged head, which can be overlain by a geogrid reinforced soil relieving platform. Advantages A versatile ground improvement method that can be adjusted to a wide variety of soil conditions and foundation requirements Offers an economical solution for ground improvement Can be carried out to almost any depth Relatively quick execution so subsequent structural works can follow very quickly Soil improvement enables standard shallow footings which can lead to savings Extremely quiet with low vibration Only a small quanitity of soil has to be removed during the process so avoids the cost of spoil removal associated with continuous flight auger and bored piling systems Quality assurance Vibro rigs can be fully instrumented with an onboard data acquisition system. Data from the system, such as amperage and lift rate, can then be recorded and displayed in real-time alongside specified target values on an in-cab monitor. This monitoring allows the operator to correct any deviations in real-time during the construction process to keep the vibro compaction within project specifications. Related projects Project image Elkhorn Valley Ethanol Location Norfolk, Nebraska Project image Society Hill Apartments Location Jersey City, New Jersey Footer CTAs Request a quote Get assistance Contact us © 2021 Copyright Keller North America 7550 Teague Road, Suite 300 Hanover, MD 21076 Footer links Keller Group Worldwide contacts Careers Keller Vendor Registration Form Register for alerts Click on the button below to select the types of alerts you would like to receive Register for alerts Legal links Terms of use Privacy Policy California Resident Privacy Notice Manage cookies Sitemap Social links Facebook Instagram LinkedIn Twitter YouTube Your choice regarding cookies on this site We use cookies to give you the best possible experience and hold information about how you use our website. Accept allManage cookies