Creeping suspicion

Article Abstract:

Epoxy-coated anchors used for stabilization of the dam at the Occoquan River, Virginia, exhibited more creep movement and seating losses than bare-wire strands due to a difference in the material's behavior. Epoxy-coated anchors have provided double corrosion protection to the dam. Studies conducted by Harza Engineering Co. show that the Post-Tensioning Institute criteria may be unsuitable for epoxy-coated filled strand since it is based on the bare-wire strand. Lift-off tests are the best method for a long-term evaluation of anchor performance.

Epoxy coatings, Dam safety

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Weighing anchors

Article Abstract:

Modern anchorage systems are increasingly being used by design engineers as load transfer mechanisms. Choosing the right anchor system requires a review of current technical references, performance criteria and reliability information from prequalification tests. Fortunately, design engineers can avail of information from the American Concrete Institute and the Comite Euro-International du Beton which publish data on the performance of anchor system.

Rock bolts

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Through it all

Article Abstract:

The details pertaining to the understanding the nature, and properties of a smaller particle, the neutrino, at the new underground laboratories at the Fermi National Accelerator Laboratory, located in Batavia, Illinois, are presented.

Science & research, Illinois, Neutrinos, Chemical properties, United States. Fermi National Accelerator Laboratory

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