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  • 1.  Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-21-2017 11:34 AM
    New and innovative options are available for the revival or thin concrete shell structures in main stream architectural engineering projects. Look at the possibilities that Textile Fibre Reinforced Concrete - "TFRC" offers to achieve thin elegant and efficient shell structures.  The construction material of the future | STYLEPARK
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    The construction material of the future | STYLEPARK
    The construction material of the future by Unbekannt Unbekannt | 4/17/2015 The Arena de Amazonia in Manaus, Brasil, with a membrane surface made of glass/PTFE. Photo © CENO Tec New construction materials such as textile-reinforced concrete and other fiber-based materials are especially light, resist corrosion, and possess key advantages over steel.
    View this on Stylepark >


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    Pedro Munoz Ph.D., P.E., M.ASCE
    Principal
    PRM Engineering, LLC
    Methuen MA
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  • 2.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-22-2017 10:19 AM
    I anticipated a product like this over sixty years ago when fist employed as a structural engineer and doing a lot of concrete design. Now the building codes in the USA are extremely complex and it will take many years for them to incorporate this product. Are efforts underway to accomplish the incorporation into the codes?

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    Glenn Boerke P.E., M.ASCE
    President
    Smyrna TN
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  • 3.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-23-2017 11:08 AM
    All might be interested in the Fabric Forming Society (http://www.fabricforming.org/) and fabric-formedconcrete.com as well

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    C Michael Donoghue P.E., M.ASCE
    Principal
    Maritech Engr. ,Inc.
    Austin TX
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  • 4.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-24-2017 10:18 AM
    Reinforced polymer concrete is an FRP (Fiber Reinforced Polymer) material that has been used many years in customized products such as electrical and cable utility boxes, drainage conduit, etc.  These products include trade names such as Quazite, Polycast, by Hubbell and Aquadrain by Aquadrain Systems.  They are used for their light-weight and corrosive resistant characteristics.  Reinforcement is primarily of e-glass fiber tow and mats and occasionally steel rebar where AASHTO loading conditions occur. The standard matrix is polyester or epoxy resins so fire and high temperature applications need to be critically considered.

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    Daniel Witcher P.E., M.ASCE
    Bristol TN
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    Original Message


  • 5.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-24-2017 12:43 PM
    i have been interested in and done some research in the use of fabric as a flexible formwork system for more than 10 years.  It really is a unique way to form concrete.  I'd just like comment on the website references made above.  Our society's website: www.fabricforming.org has not always been kept up-to-date.  It used to have a map that showed practitioners and researchers worldwide interested in this topic.  It has a list of papers but PDFs of them are not available.  I have two websites dedicated to the topic: www.fabric-formedconcrete.com and www.fabwiki.fabric-formedconcrete.com.  The fabric-formedconcrete.com was meant for commercial projects and info should I get to do any, none so far.  The FABWIKI website is where I try to maintain research information on the topic which, I see, is out-of-date as well.  For some reason the world map I had there doesn't show up at the moment.  You can get to this website by hitting the icon on the fabric-formedconcrete website.  Any questions on the topic please feel free to contact me.

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    Robert Schmitz P.E., M.ASCE
    PRESIDENT
    RPS STRUCTURAL ENGINEERING, LLC
    Brookfield WI
    262-796-1070
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    Original Message


  • 6.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-24-2017 12:44 PM
    ACI - American Concrete Institute American Concrete Institute
    https://www.concrete.org/topicsinconcrete/topicdetail/textile-reinforced%20concrete
    has published SP-244, SP-244-7, SP-250, and SP251 all related to Thin Fiber Reinforced Cementitious Systems, Research Universities in USA, Germany, UK, India (just to mention few) have also published their research and testing work on this subject, but it seems that it takes some years before the applicable Design Methods get their place into the actual main stream engineering practice and are widely disseminated from the Building Codes Officials. Simply search Textile Fibre Reinforced Concrete in Google and you will find very interesting and practical technical papers on testing and design methodologies. Getting the high performance high strength textile mesh, fabric, into thin concrete shells or flat slabs can very effectively be a good substitute for corrosive steel bars and wire mesh. It then becomes a Structural Mechanics case of reinforced concrete members with thin textile non-corrosive tensile reinforcement.  



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    Pedro Munoz Ph.D., P.E., M.ASCE
    Principal
    PRM Engineering, LLC
    Methuen MA
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  • 7.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-24-2017 06:59 PM
    I should add one more thing related to the discussion.  When using fabric as a formwork you can achieve a very efficient shape and you don't want to thicken it up to cover corrosive reinforcement therefor, the obvious choice is some form of textile reinforcement, fiberglass, carbon fiber grid, etc.  The first paper I gave on fabric-formed concrete was at the 1st International Conference on Textile Reinforced Concrete in 2006 as an application.  It was held in Aachen, Germany.  It was hosted at Aachen University and they have a School of Architecture, Mechanical Engineering and Textile Engineering.  As a matter of fact the Textile Engineering Building completed maybe a year or 2 later is pretty much completely made of textile reinforced concrete.  Here's a link to it:

    Institute for Textiles
    RWTH Aachen University
    Aachen, Germany
    Thomas Gries, Director

    E-mail: thomas.gries@...
    Website: www.ita.rwth-aachen.de/

    The Institute: Institute - RWTH AACHEN UNIVERSITY Institut für Textiltechnik of RWTH Aachen University - English
    Rwth-aachen remove preview
    Institute - RWTH AACHEN UNIVERSITY Institut für Textiltechnik of RWTH Aachen University - English
    The Institute of Textile Technology (ITA) of RWTH Aachen University is associated with the department of Textile Engineering and is headed by Professor Thomas Gries. ITA is a part of the faculty of Mechanical Engineering of the RWTH.
    View this on Rwth-aachen >


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    Robert Schmitz P.E., M.ASCE
    PRESIDENT
    RPS STRUCTURAL ENGINEERING, LLC
    Brookfield WI
    262-796-1070
    ------------------------------

    Original Message


  • 8.  RE: Textile Fibre Reinforced Concrete "TFRC" for Thin Concrete Shells

    Posted 08-28-2017 11:17 AM
    It is great to share the latest technical information, R&D papers, actual testing, prototypes, models, etc. of this innovative and promising way to build free-form thin reinforced concrete shells and structural members for different type of architectural, sculptural artistic, and engineering applications. Envision flexible facades that can harvest the energy from the movement, solar, heat transfer between indoor and outdoors, and many more sustainable applications. The substitution of highly corrosive rebars or mesh by other types of non-corrosive flexible interior and exterior textile and fibre-mesh high tensile reinforcement for high performance ductile flexible concrete that can undergo large displacements without excessive cracking may be an excellent option and alternative to substitute highly corrosive steel reinforcing bars in shell structures.3D free form meshes can be somehow done using the latest 3D printed technologies for different non-corrosive materials to create meshes that will follow the free form of anticlastic or synclastic type of Hypar shells which will then be embedded into thin concrete matrix to form the thin concrete shells. There will be an International Workshop in India - https://www.masterbuilder.co.in/ICI/TRC/TRC-Brochure.pdf Sept. 4th-2017 on Textile Reinforced Concrete "TRC" which surely will bring lots of new developments on this field to watch for.

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    Pedro Munoz Ph.D., P.E., M.ASCE
    Principal
    PRM Engineering, LLC
    Methuen MA
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    Original Message


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