Fast-hardening hydraulic cement mass and surfacing method using the mass
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United States of America Patent
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Jan 26, 1982
Grant Date -
N/A
app pub date -
Apr 9, 1980
filing date -
Apr 10, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hydraulically setting mass having a small tendency to cracking and a felt-like structure when freshly mixed while showing no cracks or only microscopic cracks when in the hardened condition comprises essentially a fast-hardening hydraulic cement binder, water, alkali-resistant mineral fibers and additives. The freshly mixed mass is applied in a layer to the surface of a tube or the like, the applied mass is completely covered with a sheet and the mass is pressed against the surface with the sheet.
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