US2358758A - Structural reinforced cementitious construction - Google Patents

Structural reinforced cementitious construction Download PDF

Info

Publication number
US2358758A
US2358758A US478987A US47898743A US2358758A US 2358758 A US2358758 A US 2358758A US 478987 A US478987 A US 478987A US 47898743 A US47898743 A US 47898743A US 2358758 A US2358758 A US 2358758A
Authority
US
United States
Prior art keywords
fibres
cementitious
reinforced
construction
fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US478987A
Inventor
Henry C Eames
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEW ENGLAND CONCRETE PIPE Corp
Original Assignee
NEW ENGLAND CONCRETE PIPE CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEW ENGLAND CONCRETE PIPE CORP filed Critical NEW ENGLAND CONCRETE PIPE CORP
Priority to US478987A priority Critical patent/US2358758A/en
Application granted granted Critical
Publication of US2358758A publication Critical patent/US2358758A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • This invention relates to improvements in reinforced cemetitious constructions, the term cementitious construction being employed herein as defining a substance such as Portland cement which when mixed with Water or other suitable liquid to form a neat cement or mixed with sand, gravel, or the like to produce a concrete, will harden to provide a solid stone like substance; Structural articles formed of cement or concrete have heretofore usually been reinforced by embedded steel wires, bars, cages, etc., embedded in the cementitious material.
  • cementitious constructions can be satisfactorily reinforced by embedded fibrous material particularly where the fibres or strands thereof are oriented in a' direction to re-, sist the tensile stress applied to such construction.
  • Such reinforcements may be embodied in beams, sheets, bars, tubular constructions such as pipes for water supply mains, sewage pipes, drains, etc.', in such manner as to resist tensile stress imposed upon them or upon the portions thereof to which the tensile stresses are most forcibly applied.
  • the object of the present invention is therefore to provide a rigid cementitious construction which is reinforced by embedded fibres or fibrous material adapted to resist tensile stress applied thereto.
  • textile fibres is used herein as descriptive of cellulosic fibres such as vegetable fibres, animal fibres, silk, and the like, which are used in the manufacture of textile materials as distinguished from mineral or metal fibres.
  • a further object of the invention is to provide a rigid cementitious construction, such as a beam, bar or rod, having the portion or zone thereof which is to be subjected to tensile stress rein-' forced by fibres properly oriented mainly in the direction of the tensile force.
  • one of the objects of the invention is to provide a satisfactory reinforcement of concrete constructions by embedding therein suitably distributed and oriented fibrous material.
  • Another object of the invention is to provide a cementitious tubular construction which is reinforced by embedded fibres in the manner hereinafter set forth.
  • a further object of the invention is to provide a cementitious tubular structure which is reinforced by providing alternate laminations of cementitious material and embedded fibrous material.
  • Fig. 1 is a perspective view of a beam or bar having a zone of the portion thereof which is to be subject to tensile stress reinforced by embedded fibres mainly oriented in the direction of the length of the beam;
  • Fig. 2 is a similar perspective view in which the portion or zone of the beam which is subject to tensile stress is reinforced by one or more layers of embedded fabric;
  • Fig. 3 is a perspective view of a beam which is reinforced throughout by embedded fibres oriented in the proper direction to resist stresses applied thereto;
  • Fig. 4 is a perspective View of a cage of metal or other rigid material having wound upon it a layer of fibres, threads, ropes, or fabric adapted to be embedded between an inner layer and an outer layer of cementitious material to produce a rigidly reinforced tube or pipe;
  • Fig. 5 is a transverse sectional View of the completed pipe embodying the construction illustrated in Fig. 4;
  • the present invention comprises the production of a rigid cementitious construction which is adapted to be subjected to tensile stress reinforced by substantially uniformly distributed embedded fibres preferably fibres otherwise used in textile manufacture including cotton fibre waste,
  • cotton thread waste or fibres of silk, rayon, jute, hemp, ramie, etc., and woven fabric such as cheese cloth.
  • the methods of using the fibres or fabric as reinforcement include the distribution of fibres uniformly throughout the cementitious material, c'ement or concrete manually or by concrete or mortar mixers alone or in conjunction with well known special devices such as are used in paper and waterproofing felt manufactured to feed fibres, strands or threads oriented as desired into the mixture.
  • a solid reinforced construc tion uniformly reinforced throughout such as a beam l illustrated in Fig. 3, may be produced.
  • any suitable form of mould may be provided to produce an article of desired form or' contour.
  • pressure and heat maybe ap plied to the mixture during mouldingandcuring or'setting.
  • Sheets of material may likewise bereinforced by fibresoriented in the desired direction or by sheets of textile material embedded' inand im'- pregnated with the cementitious material.
  • Beams formedin this manner maybe of-neat cement but preferably of cement mixed with sandgravel or the like as in. concrete structures.
  • FIG. 2 A modified form of the invention isillustrated in Fig. 2 in which a beam 1 of cement or concrete. is provided at the plane where the tensile reinforcement is advantageous, as for example,
  • the strands of thread extend and the fibres thereof are mainly oriented in the direction of the length of the beam.
  • the invention is also illustrated herein as embodied in a. tubular construction which as illustrated in Fig. 6 comprises a hollow cylindrical tube ll) of cementitious material, such as neat cement or concrete in which the fibres are uni- I formly distributed throughout or in concentric zone or zones, the fibres preferably being oriented in the direction in which tensile stress is to be applied to the pipe, for example, where the tubular construction is to be used as a water main, sewer pipe, or the like, in which the pipe is not evenly supported throughout its length, fibres will be mainly oriented lengthwise of the pipe,
  • Figs. 7 and 8 whichflshow the mariner in which" a laminated tubular structure may be made.
  • a suitable mandrel [6,. which is fixedly secured upon an axle shaft IT, is rotated in any suitable manner and alternating layers of cement ormortar'l8 and fabric l9 progressively wound upon the mandrel until" a pipe section having walls of suitable thickness is'forr'ned'.
  • weft str'arid's' or the fabric mainly extend" or are” mainly oriented in the direction of the length of the'pip e andr infor'ce' the pipe against longitudinal ten'sio'rial strains while the warp strands of the fabric are embedded circumferentially in the cement and cooperate with the longitudinally extending.
  • strand's'witli which'they interlace further toresist transverse tensile strainsito' which the pipe maybe subject from without or fromwitliin.
  • strip 2 l' of fabric which is" directed to the mandrel at" an anglet'o'th'e 'axisthereof to. provide a spiral winding;
  • Such spiral w'ind ings maybe made successively" in the same di-j re'ctidribut preferably analtern'ating' spiral 2'2is similarly wound inth'e opposite direction so'tliat tn'e spirals cross each other'as illustrated.
  • the concrete may be progressively" applied" uniformly to the upper face of the fabric or fabric sheet 19 or fabric strip 2i and sufficient tension maintained upon the fabric to wind the same smoothly and to cause impregnation of the cement into the interstices of the fabric and the fibres thereof so that the whole will be firmly cemented together.
  • a further layer of neat cement or concrete may be applied to the surface to enclose and protect the final winding of fabric and to present a smooth surface.
  • the mandrel can be withdrawn longitudinally thereby providing a true cylindrical pipe.
  • any suitable fibres or fabric may be employed as heretofore stated to produce a satisfactory reinforced cementitious construction, the cost of which will be comparable with bars or cages of iron or steel.
  • the reinforcement ofthe concrete by the present invention is advantageous over that of concrete reinforced by rods or wires of iron or steel in that the fibres are uniformly distributed throughout the cementitious material and firmly bonded thereto throughout their lengths, whereas in steel reinforcements there is considerable space between adjacent bars or wires which are not reinforced.
  • the bonding of the fibres together and to the cementitious material is more uniform as the cement not only engages the surface of the fibres but also to a great extent impregnates them, whereas in usual iron and steel reinforced constructions the cement adheres merely more or less firmly to the surface of the bars or rods.
  • Reinforcement of cementitious constructions by fibrous material in the manner above described may be embodied not only in beams, bars,
  • a lengthy rigid cementitious construction having the portion thereof which is to be subjected to tensile stress reinforced in proximity to its surface by a plurality of narrow spaced zones of substantially uniformly distributed embedded textile fibres mainly oriented in a direction to resist the tensile force.
  • a rigid cementitious tubular construction comprising a plurality of interlaminated layers of cementitious material and fibrous material impregnated therewith in which the fibres are mainly oriented in the direction of the length of the tubular construction.
  • a rigid cementitious tubular construction comprising a, plurality of progressively wound alternating laminations of cementitious material and a sheet of woven fabric bonded together thereby, in which parallel strands of the fabric extend continuously throughout the length of the tubular construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Rod-Shaped Construction Members (AREA)

Description

Sept. 19, 1944. H. c. EAMES STRUCTURAL REENFORCED CEMENTITIOUS CONSTRUCTION Filed March 12, 1943 Henry C. Eqmes b MM f ATTys.
Patented Sept. 19, 1944 STRUCTURAL REINFORCED 'CEMENTITIOUS I I coNsTRUcTIoN Henry C. Eames, Wellesley Hills, Mass, assignor to New England Concrete Pipe Corporation, Newton Upper Falls, Mass, a corporation of Massachusetts Application March 12, 1943, Serial No. 478,987
3 Claims.
This invention relates to improvements in reinforced cemetitious constructions, the term cementitious construction being employed herein as defining a substance such as Portland cement which when mixed with Water or other suitable liquid to form a neat cement or mixed with sand, gravel, or the like to produce a concrete, will harden to provide a solid stone like substance; Structural articles formed of cement or concrete have heretofore usually been reinforced by embedded steel wires, bars, cages, etc., embedded in the cementitious material.
I have discovered that cementitious constructions can be satisfactorily reinforced by embedded fibrous material particularly where the fibres or strands thereof are oriented in a' direction to re-, sist the tensile stress applied to such construction.. Such reinforcements may be embodied in beams, sheets, bars, tubular constructions such as pipes for water supply mains, sewage pipes, drains, etc.', in such manner as to resist tensile stress imposed upon them or upon the portions thereof to which the tensile stresses are most forcibly applied.
The object of the present invention is therefore to provide a rigid cementitious construction which is reinforced by embedded fibres or fibrous material adapted to resist tensile stress applied thereto.
[I am aware that in the past fibres of various kinds have been added to plasters and mortars to hold them together during application and hardening to" prevent sagging and to prevent shrinkage cracks. I am also aware that strips of wood, bamboo and the like have been employed as tensile reinforcements of concrete.
' It is well known that animal and vegetable fibres which do not deleteriously affect the concrete in which they are embedded are not adversely affected by the concrete, but in fact are protected from disintegration by the enclosing film of cement, and further that the fibres are firmly bonded to and together by the cement. The term textile fibres is used herein as descriptive of cellulosic fibres such as vegetable fibres, animal fibres, silk, and the like, which are used in the manufacture of textile materials as distinguished from mineral or metal fibres.
I have' found from experimental tests that many fibres have a tensile strength sufiiciently approaching that of mild steel, of for example 70,000 pounds per square inch, as to provide satisfactory reinforcement for commercial rigid cementitious constructions; for example, cotton has a tensile strength of approximately 45,700
pounds per square inch; hemp 55,000 pounds; jute and ramie approximately 35,000 pounds each per square inch; Wool 25,000 pounds; as com pared with asbestos, which has a tensile strength of only 15,000 pounds per square inch.
A further object of the invention is to provide a rigid cementitious construction, such as a beam, bar or rod, having the portion or zone thereof which is to be subjected to tensile stress rein-' forced by fibres properly oriented mainly in the direction of the tensile force.
' In view of the scarcity of steel due to war conditions or to unavailability of steel in certain areas one of the objects of the invention is to provide a satisfactory reinforcement of concrete constructions by embedding therein suitably distributed and oriented fibrous material.
Another object of the invention is to provide a cementitious tubular construction which is reinforced by embedded fibres in the manner hereinafter set forth.
A further object of the invention is to provide a cementitious tubular structure which is reinforced by providing alternate laminations of cementitious material and embedded fibrous material.
These and other objects and features of the invention will more fully appear from the following description and the accompanying drawing and will be particularly pointed out in the claims.
Illustrative embodiments of the invention are shown in the accompanying drawing, in which,
. Fig. 1 is a perspective view of a beam or bar having a zone of the portion thereof which is to be subject to tensile stress reinforced by embedded fibres mainly oriented in the direction of the length of the beam;
Fig. 2 is a similar perspective view in which the portion or zone of the beam which is subject to tensile stress is reinforced by one or more layers of embedded fabric;
Fig. 3 is a perspective view of a beam which is reinforced throughout by embedded fibres oriented in the proper direction to resist stresses applied thereto;
Fig. 4 is a perspective View of a cage of metal or other rigid material having wound upon it a layer of fibres, threads, ropes, or fabric adapted to be embedded between an inner layer and an outer layer of cementitious material to produce a rigidly reinforced tube or pipe;
Fig. 5 is a transverse sectional View of the completed pipe embodying the construction illustrated in Fig. 4;
of producing a laminated reinforced pipe or tube by spirally winding alternately in opposite directions strips of fabric and intermediate layers of" cementitious material embedding and uniting the fabric and the cementitious. material to form a solid reinforced cementitious construction.
The present invention comprises the production of a rigid cementitious construction which is adapted to be subjected to tensile stress reinforced by substantially uniformly distributed embedded fibres preferably fibres otherwise used in textile manufacture including cotton fibre waste,
cotton thread waste, or fibres of silk, rayon, jute, hemp, ramie, etc., and woven fabric such as cheese cloth.
In producing rigid cementitious constructions the methods of using the fibres or fabric as reinforcement include the distribution of fibres uniformly throughout the cementitious material, c'ement or concrete manually or by concrete or mortar mixers alone or in conjunction with well known special devices such as are used in paper and waterproofing felt manufactured to feed fibres, strands or threads oriented as desired into the mixture. Where the fibres are thus fed into the mixture during mixing or during its intro= duction into a mould a solid reinforced construc tion uniformly reinforced throughout", such as a beam l illustrated in Fig. 3, may be produced.
Of" course, any suitable form of mould may be provided to produce an article of desired form or' contour. Also, pressure and heat maybe ap plied to the mixture during mouldingandcuring or'setting.
Sheets of material may likewise bereinforced by fibresoriented in the desired direction or by sheets of textile material embedded' inand im'- pregnated with the cementitious material.
An illustrative embodiment of the invention as applied to beams, bars, etc.', is illustrated-in-Fig. 1, which illustrates a beam-2:adapteclto'be -'sup=- ported as at its endsupon suitable piers=or girders=3 and 4 in which a zone or zonesilocat'ed' at orin proximity to-the lower face-is reinforced by fibres mainly oriented in thedirectionof: the lengthof the beam, the fibres. being. distributed: in:.a layer of desired thickness in. freshly' laidce.-" ment or concrete at the plane where: the; rein forcement is most advantageous. If. desired: fibres may be similarly regularly distributed in lesser numbers through the. material adjacent said zone; it being understood that allthe -fibres of the reinforced zone, as well as those: adjacent thereto, are embedded inand adhesivelxbound together and to the surrounding cement; I heupper portion 6 of the. beam may if. desiredbe free of fibrous material which of course will de-- crease the tensile strength thereof. Beams formedin this manner maybe of-neat cement but preferably of cement mixed with sandgravel or the like as in. concrete structures.
A modified form of the invention isillustrated in Fig. 2 in which a beam 1 of cement or concrete. is provided at the plane where the tensile reinforcement is advantageous, as for example,
near its under face 8 when supportedupon-pier's' by reinforcing layer or layers 9 of fabric which is thoroughly impregnated with and bonded by the cement to the body thereof.
In this construction the strands of thread extend and the fibres thereof are mainly oriented in the direction of the length of the beam.
The invention is also illustrated herein as embodied in a. tubular construction which as illustrated in Fig. 6 comprises a hollow cylindrical tube ll) of cementitious material, such as neat cement or concrete in which the fibres are uni- I formly distributed throughout or in concentric zone or zones, the fibres preferably being oriented in the direction in which tensile stress is to be applied to the pipe, for example, where the tubular construction is to be used as a water main, sewer pipe, or the like, in which the pipe is not evenly supported throughout its length, fibres will be mainly oriented lengthwise of the pipe,
'while other fibres extend in directions more or cast or otherwise applied upon the cage and the surrounding fibres, as illustrated in Fig. 5. Such a construction is particularly adapted for use where considerable internal pressure is applied by the" liquid flowing through the pipe.
Cth'erembOdiments of the invention are illus'" trated in Figs. 7 and 8 whichflshow the mariner in which" a laminated tubular structure may be made. In producing thisconstruc'tion as illustrated in Fig. 7 a suitable mandrel [6,. which is fixedly secured upon an axle shaft IT, is rotated in any suitable manner and alternating layers of cement ormortar'l8 and fabric l9 progressively wound upon the mandrel until" a pipe section having walls of suitable thickness is'forr'ned'.
In" this construction the weft str'arid's' or the fabric mainly extend" or are" mainly oriented in the direction of the length of the'pip e andr infor'ce' the pipe against longitudinal ten'sio'rial strains while the warp strands of the fabric are embedded circumferentially in the cement and cooperate with the longitudinally extending. strand's'witli which'they interlace further toresist transverse tensile strainsito' which the pipe maybe subject from without or fromwitliin.
While in" the construction illustrated" a pipe section cyli'riclri'caFthroughout its length will be formed, it will be're'adily" understood" that the mandrel may be so constructed as to provide a" "eli sh'ape end or'socket, or othershape, adapt edto receive or connect with the opposite end oft'he next adjacent" p'ip'e'section as" is usu'alin pipe constructions: v I I v Y The" construction illustratedin Fig. Sis'fOrmed' in a, s milar manner in which the maridrel' [6 has wound upon it alternatinglayers of cement Z Wand fabric by progressively" applying the ce ment 20to a. strip 2 l' of fabric which is" directed to the mandrel at" an anglet'o'th'e 'axisthereof to. provide a spiral winding; Such spiral w'ind ingsmaybe made successively" in the same di-j re'ctidribut preferably analtern'ating' spiral 2'2is similarly wound inth'e opposite direction so'tliat tn'e spirals cross each other'as illustrated.
Ih--the constructions illustrated in Figs; 7 and) 8 the concrete may be progressively" applied" uniformly to the upper face of the fabric or fabric sheet 19 or fabric strip 2i and sufficient tension maintained upon the fabric to wind the same smoothly and to cause impregnation of the cement into the interstices of the fabric and the fibres thereof so that the whole will be firmly cemented together. After completion of the winding a further layer of neat cement or concrete may be applied to the surface to enclose and protect the final winding of fabric and to present a smooth surface. After the cementitious material is set the mandrel can be withdrawn longitudinally thereby providing a true cylindrical pipe.
Any suitable fibres or fabric may be employed as heretofore stated to produce a satisfactory reinforced cementitious construction, the cost of which will be comparable with bars or cages of iron or steel. The reinforcement ofthe concrete by the present invention is advantageous over that of concrete reinforced by rods or wires of iron or steel in that the fibres are uniformly distributed throughout the cementitious material and firmly bonded thereto throughout their lengths, whereas in steel reinforcements there is considerable space between adjacent bars or wires which are not reinforced. The bonding of the fibres together and to the cementitious material is more uniform as the cement not only engages the surface of the fibres but also to a great extent impregnates them, whereas in usual iron and steel reinforced constructions the cement adheres merely more or less firmly to the surface of the bars or rods.
Reinforcement of cementitious constructions by fibrous material in the manner above described may be embodied not only in beams, bars,
slabs, or columns, but also in tubular constructions such as sewer pipes, water pipes, electric service conduits, or in fact any other type of construction which has heretofore been reinforced in a usual manner by bars, wires, or the like, or in which reinforcement against tensile strains may be desired.
It will be understood that the embodiments of the invention shown and described herein are of an illustrative character and are not restrictive of the meaning and scope of the following claims.
Having thus described the invention, What is claimed as new, and desired to be secured by Letters Patent, is:
1. A lengthy rigid cementitious construction having the portion thereof which is to be subjected to tensile stress reinforced in proximity to its surface by a plurality of narrow spaced zones of substantially uniformly distributed embedded textile fibres mainly oriented in a direction to resist the tensile force.
2. A rigid cementitious tubular construction comprising a plurality of interlaminated layers of cementitious material and fibrous material impregnated therewith in which the fibres are mainly oriented in the direction of the length of the tubular construction.
3. A rigid cementitious tubular construction comprising a, plurality of progressively wound alternating laminations of cementitious material and a sheet of woven fabric bonded together thereby, in which parallel strands of the fabric extend continuously throughout the length of the tubular construction.
HENRY C. EAMES,
US478987A 1943-03-12 1943-03-12 Structural reinforced cementitious construction Expired - Lifetime US2358758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US478987A US2358758A (en) 1943-03-12 1943-03-12 Structural reinforced cementitious construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US478987A US2358758A (en) 1943-03-12 1943-03-12 Structural reinforced cementitious construction

Publications (1)

Publication Number Publication Date
US2358758A true US2358758A (en) 1944-09-19

Family

ID=23902203

Family Applications (1)

Application Number Title Priority Date Filing Date
US478987A Expired - Lifetime US2358758A (en) 1943-03-12 1943-03-12 Structural reinforced cementitious construction

Country Status (1)

Country Link
US (1) US2358758A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120465A (en) * 1960-01-29 1964-02-04 Certain Teed Prod Corp Asbestos cement water-laid products characterized by an equal longitudinal to transverse strength ratio
US4077577A (en) * 1976-02-04 1978-03-07 Cement Asbestos Products Company Non-stressed, high strength, cement-containing pipe and its production
US4344910A (en) * 1978-04-01 1982-08-17 Stamicarbon, B.V. Process for the manufacture of water-hardening material
EP0138165A2 (en) * 1983-10-12 1985-04-24 Kálmán Szalai Load-bearing mantle for bearing structures
US4553362A (en) * 1982-01-19 1985-11-19 Imperial Oil Limited Prefabricated building units
EP0297006A1 (en) * 1987-06-26 1988-12-28 SHIMIZU CONSTRUCTION Co. LTD. Meshwork reinforced and pre-stressed concrete member, method and apparatus for making same
WO1989003921A1 (en) * 1987-10-19 1989-05-05 British Petroleum Company Plc Engineering structures
US5218810A (en) * 1992-02-25 1993-06-15 Hexcel Corporation Fabric reinforced concrete columns
US5296187A (en) * 1993-03-23 1994-03-22 Ribbon Technology, Corp. Methods for manufacturing columnar structures
WO1996009159A1 (en) * 1994-09-20 1996-03-28 Viatech, Inc. Method of making internally reinforced composite tubes
US5680739A (en) * 1994-08-01 1997-10-28 Xxsys Technologies, Inc. Apparatus and method for reinforcing a stationary vertical column
US6219988B1 (en) * 1999-03-18 2001-04-24 The George Washington University Wrapping system for strengthening structural columns or walls
US20030038398A1 (en) * 2000-03-13 2003-02-27 Toshiaki Ohta Method and device for producing carbon long-fiber-reinforced concrete members
US20110239564A1 (en) * 2011-04-15 2011-10-06 General Electric Company Apparatus, Composite Section, and Method for On-Site Tower Formation
ES2703439A1 (en) * 2018-12-20 2019-03-08 Univ Madrid Politecnica METHOD OF REINFORCEMENT OF STRUCTURAL ELEMENTS WITH TEXTILES OF HIGH MECHANICAL PERFORMANCES (Machine-translation by Google Translate, not legally binding)
WO2021063453A1 (en) * 2019-10-02 2021-04-08 Technische Universität Dresden Tubular reinforcing element, method for producing a reinforcing element, global reinforcement, use of a reinforcing element, concrete structural part and program file
US11408176B2 (en) * 2019-08-19 2022-08-09 Raymond Alan Low Multi-axially braided reinforcement sleeve for concrete columns and method for constructing concrete columns
US20230075456A1 (en) * 2019-08-19 2023-03-09 Raymond Alan Low Cable-Supported Structural Assembly with Flexible Reinforced Concrete Structural Element

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120465A (en) * 1960-01-29 1964-02-04 Certain Teed Prod Corp Asbestos cement water-laid products characterized by an equal longitudinal to transverse strength ratio
US4077577A (en) * 1976-02-04 1978-03-07 Cement Asbestos Products Company Non-stressed, high strength, cement-containing pipe and its production
US4344910A (en) * 1978-04-01 1982-08-17 Stamicarbon, B.V. Process for the manufacture of water-hardening material
US4553362A (en) * 1982-01-19 1985-11-19 Imperial Oil Limited Prefabricated building units
EP0138165A2 (en) * 1983-10-12 1985-04-24 Kálmán Szalai Load-bearing mantle for bearing structures
EP0138165A3 (en) * 1983-10-12 1986-04-30 Kálmán Szalai Load-bearing mantle for bearing structures
EP0297006A1 (en) * 1987-06-26 1988-12-28 SHIMIZU CONSTRUCTION Co. LTD. Meshwork reinforced and pre-stressed concrete member, method and apparatus for making same
WO1989003921A1 (en) * 1987-10-19 1989-05-05 British Petroleum Company Plc Engineering structures
US5218810A (en) * 1992-02-25 1993-06-15 Hexcel Corporation Fabric reinforced concrete columns
WO1993018245A1 (en) * 1992-02-25 1993-09-16 Hexcel Corporation Fabric reinforced concrete columns
US5296187A (en) * 1993-03-23 1994-03-22 Ribbon Technology, Corp. Methods for manufacturing columnar structures
US5680739A (en) * 1994-08-01 1997-10-28 Xxsys Technologies, Inc. Apparatus and method for reinforcing a stationary vertical column
WO1996009159A1 (en) * 1994-09-20 1996-03-28 Viatech, Inc. Method of making internally reinforced composite tubes
US6219988B1 (en) * 1999-03-18 2001-04-24 The George Washington University Wrapping system for strengthening structural columns or walls
US20030038398A1 (en) * 2000-03-13 2003-02-27 Toshiaki Ohta Method and device for producing carbon long-fiber-reinforced concrete members
US20110239564A1 (en) * 2011-04-15 2011-10-06 General Electric Company Apparatus, Composite Section, and Method for On-Site Tower Formation
ES2703439A1 (en) * 2018-12-20 2019-03-08 Univ Madrid Politecnica METHOD OF REINFORCEMENT OF STRUCTURAL ELEMENTS WITH TEXTILES OF HIGH MECHANICAL PERFORMANCES (Machine-translation by Google Translate, not legally binding)
US11408176B2 (en) * 2019-08-19 2022-08-09 Raymond Alan Low Multi-axially braided reinforcement sleeve for concrete columns and method for constructing concrete columns
US20230075456A1 (en) * 2019-08-19 2023-03-09 Raymond Alan Low Cable-Supported Structural Assembly with Flexible Reinforced Concrete Structural Element
US11859386B2 (en) * 2019-08-19 2024-01-02 Raymond Alan Low Cable-supported structural assembly with flexible reinforced concrete structural element
WO2021063453A1 (en) * 2019-10-02 2021-04-08 Technische Universität Dresden Tubular reinforcing element, method for producing a reinforcing element, global reinforcement, use of a reinforcing element, concrete structural part and program file

Similar Documents

Publication Publication Date Title
US2358758A (en) Structural reinforced cementitious construction
US2467999A (en) Composite pipe
US2425883A (en) Concrete structural element reinforced with glass filaments
US5768847A (en) Concrete reinforcing devices, concrete reinforced structures, and method of and apparatus for producing such devices and structures
EP0135374A2 (en) Fabric reinforced cement structure
US3579409A (en) High strength plastic coated fiber yarn fabric for structural reinforcement
JPH02137757A (en) Building sheet made of cement reinforced with plastic mesh and glass fiber
US10059032B2 (en) Method of forming a reinforcing element
RU2482247C2 (en) Method to manufacture non-metal reinforcement element with periodic surface and reinforcement element with periodic surface
KR890001988B1 (en) A reinforced conventional concrete pipe having an evenly distributed sted wire reinforcement and method for its manufacture
KR20080070735A (en) Reinforcement for concrete elements and system and method for producing reinforced concrete elements
US2335722A (en) Cementitious product
US4021258A (en) Concrete structure and method of preparing same
EP0876524B1 (en) Reinforcing for concrete products and reinforced concrete products
US6335087B1 (en) Reinforcing for concrete products and reinforced concrete products
CN105350700A (en) High toughness masonry wall and preparation method
US2280252A (en) Producing reinforced conduits
US1670557A (en) Reenforced building element
WO1997026395A9 (en) Reinforcing for concrete products and reinforced concrete products
CN204663110U (en) Bamboo is wound around composite electric support member
US3187466A (en) Tensioning unit
US1931494A (en) Reenforced asbestos cement sheet
RU203161U1 (en) Composite Rebar Based on Basalt Crossed Roving
JP2688606B2 (en) Three-dimensional structure with reinforced mesh tubular body
JPH0575708B2 (en)