Reinforcement mechanisms of untensioned full-column resin bolts

Kwitowski, A.J.; Wade, L.

doi:10.1016/0148-9062(81)90420-4

Cited by 1 publication

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“…These results imply variability in the mixing and resulting strength of the resin encapsulation; this is in accord with limited tests in which the writers have been involved and not surprising given that the MCB is a 17 mm plain bar designed to be installed in 30 mm or greater diameter boreholes. Extensive work, originally by the US Bureau of Mines (e.g., Snyder et al 1979;Kwitowski and Wade 1980) and confirmed more recently (e.g., Fuller and Dugan 1992;Tadolini 1998;Villaescusa et al 2008 ), showed that the annulus thickness between the borehole and element should be no more than about 5 mm, and preferably less, to ensure consistent resin mixing to create a competent internal fixture.…”

Section: A Case Studymentioning

confidence: 95%

Ground Support Terminology and Classification: An Update

2012

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It is nearly two decades since a formal terminology and a classification scheme were proposed for rock reinforcement hardware and applications. That combined framework was used to clearly identify concepts associated with reinforcement mechanics in a manner that was consistent and robust enough to characterise all reinforcement systems. Since that time, many new reinforcement systems have been developed and it can be shown that they all fit within the proposed classification scheme. Most recently, a complementary new terminology and a classification scheme for surface support, also based on mechanics, have been developed. This framework is invaluable in the design of ground support schemes, the planning of testing and instrumentation programs and the development of software used to simulate the static and dynamic response of rock reinforcement and support systems. It will be shown that the terminology and classification schemes are valid today and will so remain into the future because of the laws of mechanics.

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Section: A Case Studymentioning

confidence: 95%