"Creep and stiffness of full column resin grouted roof bolts." by Wesley Clare Patrick
 

Masters Theses

Abstract

"A three-phase test program was utilized to evaluate some creep and stiffness parameters of several types of full-column resin-grouted roof-bolt installations. The tests indicate that: (1) a large percentage of an applied load bleeds off during the first 100 hours subsequent to bolt installation; (2) the amount of load bleed-off is a f unction of the grout annulus size and the bolt surface roughness; (3) retightening of grouted rock bolts reduces the magnitude and rate of the load bleed-off phenomenon; and (4) resin-grouted roof bolts provide a stiffer roof support system in that bolt elongation resulting from an applied load, e.g., geologic post- tensioning due to strata movements, is much less than for mechanically anchored systems"-- Abstract, p. iii

Advisor(s)

Haas, Charles J.

Committee Member(s)

Davis, Robert L.
Spokes, Ernest M., 1916-1995

Department(s)

Mining Engineering

Degree Name

M.S. in Mining Engineering

Publisher

University of Missouri--Rolla

Publication Date

1975

Pagination

ix, 78 pages

Note about bibliography

Includes bibliographical references (pages 76-77)

Rights

© 1975 Wesley Clare Patrick, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 4065

Print OCLC #

5984618

Electronic OCLC #

1482967495

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