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Recycling of ruined structure in Syria

  • 1.  Recycling of ruined structure in Syria

    Posted 07-08-2018 09:06 AM
    Edited by Tirza Austin 08-08-2018 05:54 PM
    I want to ask, how useful is it to make a new study for giving new data for recycling destroyed structure in Syria for reconstruction? Should I make a new study or go to the previous analysis and similar tests previously done? 

    And how valuable is it to be a study for a scientific paper for research purpose? 

    ------------------------------
    Baraa Zaitoun S.M.ASCE

    ------------------------------


  • 2.  RE: Recycling of ruined structure in Syria

    Posted 07-09-2018 10:10 AM
    Edited by Roxann Henze 07-09-2018 01:22 PM
    Hello,

    Thank you for your question. I am sure it is valuable, and if it proves to be less so compared to other possible activities toward reconstruction, a smooth transitioning is always possible.

    Don't you think it requires collaborations with bodies of Urban Studies? And if so, do you have the correct connection?

                    All my best, 

    ------------------------------
    Touraj Tayebi P.E., M.ASCE
    Princeton NJ
    ------------------------------



  • 3.  RE: Recycling of ruined structure in Syria

    Posted 07-09-2018 10:12 AM
    Edited by Roxann Henze 07-09-2018 01:22 PM
    ​Dear Baraa Zaitoun and forum

    Let me share mine:
    I do not think recycling destroyed structure is worth enough to be used for a new structure.
    Maybe some material can be used for embankment and borrow material only but for structure it is required to be cleaned up etc.
    The cost for segregating and cleaning will cost a lot and takes time to do.

    Regards,

    ------------------------------
    Abdul Desfiansyah CCM, P.E., M.ASCE
    Sumitomo Corporation
    Jakarta
    628111725333
    6221 5251550 x130
    ------------------------------



  • 4.  RE: Recycling of ruined structure in Syria

    Posted 07-09-2018 04:53 PM
    Edited by Tirza Austin 07-09-2018 04:52 PM
    There have been many studies performed in the US and internationally on the recycling of crushed concrete as aggregates in reinforced concrete.  The biggest question is it economically feasible to do so since aggregates usually cost less than recycled aggregates due to transportation costs, availability, etc.  So unless it is economically feasible, why would someone want to do that?

    To me, the historical value of historical structure is much more significant than anything else.  The ultimate solution would be the rehabilitation of the damaged structures.  If a historical structure is so damaged beyond the repair, then the ruins should be preserved with minimum interventions.  The safety of the site is critical, so it must be closely examined in that case.  Take a look at the following:

    Bam destroyed by earthquake
    Ruins of the Former Cathedral Church of St. Michael, Coventry  destroyed in WWII

    ------------------------------
    Ali Mehrabian, Ph.D., C.Eng, M.ASCE
    Professor
    DSC
    ------------------------------



  • 5.  RE: Recycling of ruined structure in Syria

    Posted 07-10-2018 10:26 AM
    Edited by Tirza Austin 07-10-2018 10:25 AM
    I think as most members voiced, it is more about economical feasibility.

    ------------------------------
    [Khuzaifa] [Toranke] [A.M ASCE]
    [Civil Engineer]
    [Dantata & Sawoe]
    [Abuja] [Nigeria]
    [2348032588115]
    ------------------------------



  • 6.  RE: Recycling of ruined structure in Syria

    Posted 07-11-2018 03:19 PM
    Edited by Tirza Austin 07-11-2018 03:18 PM
    ​New study is my recommendation. Doha in Qatar had about two square km of buildings similar to seen on TV flattened and recycled about 7 years ago. It was a salted dune sand concrete problem.

    ------------------------------
    www.gasturbineandersen.com Len Andersen at Turbo Expo Norway June Engineer
    Water Swirled Gas Turbine Technology
    New York NY 10116-1529
    (914)536-7101
    Engineer - Gas Turbine Welding CWI
    + 20 yrs experience
    len@...
    914-536-7101
    800-428-4801Len
    ------------------------------



  • 7.  RE: Recycling of ruined structure in Syria

    Posted 07-12-2018 11:18 AM
    Edited by Tirza Austin 07-12-2018 11:18 AM
    I have gone through the different replies and they contain insightful suggestions.
    In my opinion reusing the destroyed/dismantled materials in different new structures may not prove a wise decision. There may be more than one reason for that. First, the materials lack bearing strength compared to fresh aggregates, which is most important for new structures, second, even if they are used for filling, transportation to the new construction site may not be cost effective.
    The materials may be used and prove cost effective for subbase filling in roads and pavements, filling in building floors, railways embankments, airports and dry filled gravity dams.
    Hope you have some ideas on how to best use the available materials!

    ------------------------------
    Peter Singh M.ASCE
    Managing Director
    Kingdom Designers
    Birganj
    9779855020043
    ------------------------------

    Original Message


  • 8.  RE: Recycling of ruined structure in Syria

    Posted 07-12-2018 03:44 PM
    Edited by Tirza Austin 07-12-2018 03:43 PM
    If you are considering rehabilitating a damaged building then a new study would be useful, unless no new damages have occurred since a prior study of acceptable scope was performed.  If you are considering demolition of buildings that are damaged beyond reasonable repair, it may be appropriate to limit your study to topics related to: the presence or absence of toxic or hazardous materials that require special handling and disposal; the cost of off-site transportation and disposal of demolition debris plus the costs of alternate materials if on-site materials are not reused/recycled; cost of recycling or reuse of on-site materials and finally the impact of recycled/reuse of on-site materials on the quality of the new construction.

    Whether a study is worthy of a research paper (and funding) is generally related to whether the objective of the study is to shed new light on the topic.  Unique approaches to collecting and analyzing data and information or new ideas for how materials could be beneficially reused are examples.  If the building(s) are of historic significance, but not repairable, ideas for salvaging important architectural elements for incorporation into new structures might also be relevant.

    ------------------------------
    Bruce Clarke P.E., M.ASCE
    Vice President
    Williams & Beck Inc
    Rockford MI
    (616) 874-2500
    ------------------------------

    Original Message


  • 9.  RE: Recycling of ruined structure in Syria

    Posted 07-13-2018 02:19 PM
    Edited by Tirza Austin 07-13-2018 02:18 PM
    The only safe recycling of concrete structures, that I know of, is that of precast concrete units, and only if they were intact. That is not the case here.

    In the case here, the only possible recycling is to use crashed concrete as fill material, sub-base material for roads and for embankments.

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    Neil Kazen F.ASCE
    Structural Design Manager Transportation Division
    Toronto ON
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  • 10.  RE: Recycling of ruined structure in Syria

    Posted 07-15-2018 10:58 AM
    Edited by Tirza Austin 07-15-2018 10:58 AM
    Dear Neil,

    I agree that those materials may be used as subbase material.
    In addition, they may be used for ground improvement particularly for soft soil or marine clay subjected to conduct the required geotehnical tests. 

    Regards,

    ------------------------------
    ​Dr Khondaker Sakil Ahmed, PEng, M.ASCE
    Associate Professor
    Department of Civil Engineering, MIST
    Post-Doc (NUS),PhD(Structure, NUS)
    ------------------------------

    Original Message


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