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Engineering Properties of Fiber-reinforced and Polymer-impregnated Shotcrete.

Authors
Poad-ME; Serbousek-MO; Goris-JM
Source
NTIS: PB 240 695 :25 pages
Link
NIOSHTIC No.
10000983
Abstract
Structural properties of steel-fiber-reinforced shotcrete and polymer-impregnated shotcrete, both plain and fiber-reinforced, were investigated by the federal Bureau of Mines, Spokane Mining Research Center. The research center has found that flexural strengths can be increased by as much as 106 percent, and splitting-tensile strength by 50 percent, by introducing randomly oriented steel fibers. A slight decrease of compressive strength was found in the fiber-reinforced shotcrete. Polymer-impregnated shotcrete exhibited a threefold to fourfold increase in compressive and splitting- tensile strength. The techniques of preparing shotcrete with the dry process, using both fast-set agents and regulated-set cement, are described, along with the results of physical-property testing. Flexural strengths for plain and fiber-reinforced shotcrete are also reported. Steel-fiber shotcrete is the more promising of the new structural materials for ground support, and additional research is recommended.
Publication Date
19750101
Document Type
IH; Report of Investigations
Fiscal Year
1975
NTIS Accession No.
PB-240695
NTIS Price
A03
Identifying No.
RI 8001
NIOSH Division
SRC;
Source Name
NTIS: PB 240 695
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