Plastic and nonmetallic article shaping or treating: processes – Forming structural installations in situ – Sequentially molding in situ different portions or layers on...
Patent
1996-03-01
1997-12-30
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Forming structural installations in situ
Sequentially molding in situ different portions or layers on...
264 72, 264108, 264308, 264DIG69, B28B 108, E04B 116
Patent
active
057026513
ABSTRACT:
High-flexural-strength concrete is produced by mixing wet hydraulic cement-sand mixture with coarse, flat, tabular aggregate, pouring the resulting mixture into a form in a shallow layer, vibrating the form containing the mixture, thereby orienting the coarse aggregate particles, pouring another shallow layer of the mixture into the form, again vibrating the form, and repeating these processes until the form has been filled to the desired level. The mixture then is allowed to cure. Cast-in-place items are prepared by placing thin layers or lifts of oriented, tabular-aggregate concrete into conventional forms and vibrating each lift using flat-plate vibrators.
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Kosmatka, S.H., and Panarese, W.C., "Design and Control of Concrete Mixtu," 13th edition, Portland Cement Association, Skokie, IL, 1990.
Bean Dennis L.
Malone Philip G.
Sykes Melvin C.
Tom Judy C.
Walley Donald M.
Aftergut Karen
Marsh Luther A.
The United States of America as respresented by the Secretary of
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