Hillsborough County Florida is using a mix of expanding polyurethane foam and conventional cement grout as a more cost effective means of filling sinkholes. Officials say the mix uses 30 to 40% less grout adding up to a 30% cost savings. The article in the Tampa Tribune did not indicate the contractor or product name that they are using but apparently several agencies in California and other states are using the same material. Story via ASCE SmartBrief.
Geologic Hazards
Video: Bayou Corne Sinkhole Swallows Trees
The Bayou Corne Sinkhole was formed near Baton Rouge Louisiana last September, likely as a result of the failure of salt caverns below. This video shows a stand of trees being swallowed by the sinkhole […]
General
7 Amazing Holes
A colleague of mine (thanks Jamie!) sent me an email with this intriguing title. I have no idea where it originated, but it is an interesting compilation of some amazing photos and short descriptions of various natural and man-made "holes". A few sinkholes, glory holes, and of course open pit mines. By the way I didn’t write (or edit) this, just some minor formatting updates. Check it out.
Press Releases
U.S. Company, NCFI Polyurethanes, Launches TerraThane.com Website for Geo-Technical Applications and Uses
August 16, 2011 MOUNT AIRY, NC—NCFI, a U.S. company, is aiding the world geo-technical market by launching a Website for a line of new generation polyurethane products for geo-technical uses.
The Website, www.terrathane.com, provides companies working in the geotechnical field (i.e. concrete highway lifting, concrete slab raising, pipeline and tunneling, cavity filling, soil stabilization, pole setting, mine reclamation) a single online resource for choosing the very best product for their specific uses, educational material, and equipment and training resources. [Editor] Click through for the rest of the press release. [/Editor]