I saw this device (well, a model of it and a presentation) at a recent geotechnical conference and I was very impressed. One of the challenges with the QC of drilled shafts is that you […]
A secondary landslide on Highway 101 north of Legget, California was captured on video at the end of April. The original slide closed the highway and after Caltrans was able to clear it and reopen […]
The International Society of Rock Mechanics (ISRM) has some great lectures posted online. The latest one posted in April is ‘Why Rock Mechanics and Rock Engineering?’ by Professor Emeritus Charles Fairhurst of the University of […]
FORT LUPTON, CO—An unfortunate inlet line break at one of Anadarko Petroleum’s hydraulic fracturing stations in Weld County, Colorado just north of Denver, allowed injection fluid to wash out the end of the pumping station and get beneath the concrete slab foundation causing erosion. The voids created beneath the slabs were from three inches to five inches and left the slab floor uneven. The general contractor for the station, Open Range Services, initially thought to use the legacy method of mudjacking, or pressure grouting: pouring a thick grout of mixed concrete and other aggregates into the void, or backfill, but the “mud” is heavy which can affect the surrounding soil, time consuming, and difficult to apply and clean, and backfilling would have required the costly process of ripping out the slab and replacing it. Instead, they contacted Pro Foundation Technology, based in Kansas City, MO, to learn more about a contemporary technology called “foamjacking” or “polyjacking,” which uses lighter weightgeotechnical polyurethane foam instead of grout.
[Editor] Click through for the rest of the press release from GeoPrac.net sponsor, NCFI Polyurethanes! [/Editor]
After tunneling 9,270 feet under downtown Seattle, the Bertha tunnel boring machine finally broke through at the north portal yesterday. The breakthrough marks a major milestone in the project to replace the seismically deficient SR-99 […]
A good way to begin building a business case for investing in new software and systems is to evaluate the time and cost in carrying out a typical task, such as producing site plans and […]
Bentley will be hosting a webinar at two different times on April 5, at 9 a.m. EDT and 5 p.m. EDT for the new gINT Special Interest Group (SIG). They will focus on a current […]
If Norway’s Stad Ship Tunnel gets approved, it would be located on the Stadhavet Sea, an area known for heavy winds and hurricanes. Stormy weather makes it almost impossible for ships to travel in the […]
The Geo-Institute’s Geo-Frontiers conference was held recently in Orlando Florida. On March 14, 2017, they presented their awards, including the prestigious Karl Terzaghi Award, the Ralph Peck Award and others. This video was shown at […]
Maybe I missed this when it first happened, but I recently saw that AASHTO’s Standard Specifications for Transportation Materials and Methods of Sampling and Testing is no longer being offered as a printed book but […]
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