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Polymeric Materials for Underground Support.
Franklin-JC; Fraley-JE; Burnham-RE; Brandt-LW
NTIS: PB 231 275 :16 pages
The Spokane Mining Research Center of the federal Bureau of Mines is placing major emphasis on chemical stabilization as part of the ground support program. Development of polymeric material suitable for bonding rock fractures around the mine opening is one phase of the program. Some of the problems that must be considered are viscosity, applicability, adhesion, cure times, strength, toxicity, and flammability. Epoxies and polyesters were investigated, but shrinkage in polyesters caused redirected effort toward epoxies. Test results with the latter showed that bonded fractures in mine- roof strata were stronger than in the virgin rock. Further tests showed that polymeric materials have good potential for bonding, and in conjunction with polymer roof bolts, are expected to result in an economic and useful new support concept.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 231 275
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division