Expansible apparatus for removing the surface layer from a concrete object
Abstract
A method and apparatus for removing the surface layer from a concrete object. The method consists of providing a hole having a circular wall in the surface layer of the object, the hole being at least as deep as the thickness of the surface layer to be removed, and applying an outward wedging pressure on the wall of the hole sufficient to spall the surface layer around the hole. By the proper spacing of an appropriate number of holes, it is possible to remove the entire surface layer from an object. The apparatus consists of an elongated tubular-shaped body having a relatively short handle with a solid wall at one end, the wall of the remainder of the body containing a plurality of evenly spaced longitudinal cuts to form a relatively long expandable section, the outer end of the expandable section having an expandable, wedge-shaped spalling edge extending from the outer surface of the wall, perpendicular to the longitudinal axis of the body, and expanding means in the body for outwardly expanding the expandable section and forcing the spalling edge into the wall of a hole with sufficient outward pressure to spall away the surface layer of concrete. The methodmore »
- Inventors:
-
- Pasco, WA
- Issue Date:
- Research Org.:
- Battelle Memorial Institute, Columbus, OH (United States)
- OSTI Identifier:
- 863338
- Patent Number(s):
- 4152028
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E04 - BUILDING E04G - SCAFFOLDING
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- expansible; apparatus; removing; surface; layer; concrete; method; consists; providing; circular; wall; deep; thickness; removed; applying; outward; wedging; pressure; sufficient; spall; proper; spacing; appropriate; holes; remove; entire; elongated; tubular-shaped; relatively; handle; solid; remainder; containing; plurality; spaced; longitudinal; cuts; form; expandable; section; outer; wedge-shaped; spalling; edge; extending; perpendicular; axis; expanding; means; outwardly; forcing; particularly; suitable; layers; radioactively; contaminated; method consists; elongated tubular; apparatus consists; particularly suitable; outer surface; longitudinal axis; surface layer; entire surface; surface layers; radioactively contaminated; removing surface; circular wall; moving surface; /299/
Citation Formats
Allen, Charles H. Expansible apparatus for removing the surface layer from a concrete object. United States: N. p., 1979.
Web.
Allen, Charles H. Expansible apparatus for removing the surface layer from a concrete object. United States.
Allen, Charles H. Mon .
"Expansible apparatus for removing the surface layer from a concrete object". United States. https://www.osti.gov/servlets/purl/863338.
@article{osti_863338,
title = {Expansible apparatus for removing the surface layer from a concrete object},
author = {Allen, Charles H},
abstractNote = {A method and apparatus for removing the surface layer from a concrete object. The method consists of providing a hole having a circular wall in the surface layer of the object, the hole being at least as deep as the thickness of the surface layer to be removed, and applying an outward wedging pressure on the wall of the hole sufficient to spall the surface layer around the hole. By the proper spacing of an appropriate number of holes, it is possible to remove the entire surface layer from an object. The apparatus consists of an elongated tubular-shaped body having a relatively short handle with a solid wall at one end, the wall of the remainder of the body containing a plurality of evenly spaced longitudinal cuts to form a relatively long expandable section, the outer end of the expandable section having an expandable, wedge-shaped spalling edge extending from the outer surface of the wall, perpendicular to the longitudinal axis of the body, and expanding means in the body for outwardly expanding the expandable section and forcing the spalling edge into the wall of a hole with sufficient outward pressure to spall away the surface layer of concrete. The method and apparatus are particularly suitable for removing surface layers of concrete which are radioactively contaminated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1979},
month = {Mon Jan 01 00:00:00 EST 1979}
}