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  • Users: Blackhorse007
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  1. Blackhorse007

    Concrete Strength with Fibermesh

    Yeap Ron, thanks for pointing it out, it was not too well expressed:)
  2. Blackhorse007

    Concrete Strength with Fibermesh

    yeap fiber in the concrete function linke a rebar, they will help to increase the strenght of the concrete. but if u add too much of fiber, the property would start to be come slightly unpredictable especially if the fibers are not mixed properly into the cement.
  3. Blackhorse007

    Determine the Tensile Modulus and Shear Modulus of Woven Roving

    hi do not be stressed, i am sure if u ask the supplier nicely, he would be able to dig out some information from the manufacturers. The guys who manufacture the product must know what they are manufacturing and must know all the figures that u require. so be nice to them, they might let u in...
  4. Blackhorse007

    Concrete Crank Injection

    yeap epoxy is the way, but because of the tide you might want to consider epoxy tt can cure under water?
  5. Blackhorse007

    Determine the Tensile Modulus and Shear Modulus of Woven Roving

    I think u would have to go direct to the manufacturers they would have what u require. These materials are no easy to calculate off hand, coz some of the components are trade secret.
  6. Blackhorse007

    Carbon Fiber Repair?

    I did a cost comparison for my material before and this is the time cost we are looking at, not so convinent to give the actual cost hope u guys understand; productivity for my FRP system (2 layers of wrap) Productivity = 15/5.4 = 2.78 man hour/m2 productivity for one piece of steel plate...
  7. Blackhorse007

    Determine the Tensile Modulus and Shear Modulus of Woven Roving

    F-glass, if the supplier cannot provide i think it might also be quite hard for us as there are some properties that you would need to aquire from them. Probably they are too sensitive, try asking, if it is not sensitive to obtain the information and the supplier really do not know, try...
  8. Blackhorse007

    Determine Young's Modulus and Shear Modulus of Woven Roving

    wat is the fiber used for? well i think that if the formula is ok, that is what the chinese design institutes are doing. but it still depends on the application.
  9. Blackhorse007

    Big Dig Boston ceiling collapse

    wermmm in the first place, how could it have hapened??!?!?!
  10. Blackhorse007

    High TG epoxy

    yo phoenix221 can u pls keep us posted? this is very intresting to find that there is a high tempreature resisting epoxy THanks!
  11. Blackhorse007

    Corrosion under carbon fiber composite

    We used to have the same problem too when we applied carbon plates to bare Steel structures. One of the reason i could come up with is that carbon is conductive for electrostatic, thus when it comes into contact with the steel, there some electron transfer be it if there is epoxy or not. One of...
  12. Blackhorse007

    High TG epoxy

    Wow, epoxy are not meant to have such high tempreature resistance, probably some NASA materials might be able to come in useful here. PETI is an alternative, it might be better to look for the correct supplier to get these done? Else at worse probably you might want to put one layer of fireproof...
  13. Blackhorse007

    Carbon Fiber Repair?

    well the speed for doing FRP is definately an advantage, and on top of that if we are talking about repairing the bridge, by drilling holes in the concrete, it might induce cracks and thus a higher stress value for the concrete, would it not do more harm to the bridge?
  14. Blackhorse007

    Carbon Fiber Repair?

    Probably you might want to try glass or carbon plates, they are stiffer and might help slove the prob a bit, for more as old runner suggest get fyfe or the rest to work out the FRP reinforcement for u. I know fyfe would be glad to do the initial assessment for free
  15. Blackhorse007

    Big Dig

    this havea similar case tt happened in singapore, the workers were working on a wall and the wall collapsed crushing some people below it, think it was a demolition job. Well the verdict if i was not wrong was contractor. There was not enough training for the workers and the contractor did not...
  16. Blackhorse007

    Civil Engineering : Contractor Costs (Site costs, overhead...).

    hi there bomenga, you need to let us know which part of the world are u in right now.
  17. Blackhorse007

    Strengthen Existing Concrete Column

    well, there due to space constrain, FRP would be the best way out, Fyfe have both Glass and carbon fibr which would be useful in this situation and i am quite sure that they would help u do the necessary calculations. On top of ductility for earthquake ( which fyfe uses glass fabrics) it could...

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