1 / 51

Presentation on Hydrodemolition of Concrete and Bridge Structures

Presentation on Hydrodemolition of Concrete and Bridge Structures. 2014 Virginia Concrete Conference Richmond Virginia March 6 2014. Outline for Today. Definition of Hydrodemolition Different types of Hydrodemolition Hydrodemolition Equipment Applications for Hydrodemolition

cecily
Télécharger la présentation

Presentation on Hydrodemolition of Concrete and Bridge Structures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Presentation on Hydrodemolition of Concrete and Bridge Structures 2014 Virginia Concrete Conference Richmond Virginia March 6 2014

  2. Outline for Today • Definition of Hydrodemolition • Different types of Hydrodemolition • Hydrodemolition Equipment • Applications for Hydrodemolition • Where Hydrodemolition is the preferred method of deteriorated concrete removal. • Issues with Conventional methods • Local Projects and where its used • Fast Track Structure Rehabilitation

  3. Hydrodemolition Definition

  4. Hydro Flow and Pressures • Basically there are 2 types of Hydrodemolition • High Pressure above 25,000 psi with low water flow rate of 25 gallons per min and less. • Low pressure approximately 15,000 psi and high water flow rates of 55 gallons per min.

  5. Hydro means Water • Hydrodemolition water needs to be Clean and Potable due to the tight tolerances' of the pump units • Best option is to receive water directly from a fire hydrant • Trucking water is generally the second option • Filtration units can be used to draw from lakes and streams.

  6. Hydrodemolition Equipment • Water Source • Power unit • Computerized robot • Carriage and protection shroud • Cutting nozzle and lance • Vacume Truck

  7. Hydrodemolition Pump Unit

  8. Hydrodemolition Robot

  9. Hydrodemolition Vacall Unit

  10. Hydrodemolition Applications

  11. Preferred Method for Rehabilitation • Total Surface Hydro to Remove Bad Concrete • Structural Concrete Overlays with Latex Modified Concrete • Flexibility of products depending on traffic • Largest overlay job in United States bid with this method.

  12. Jack hammer the method of yesterday

  13. Micro cracks and no bond is shown on a thin section after use of a jackhammer.

  14. Hydrodemolition & LMC Use in the United States

  15. Recent Hydrodemolition/LMC Use in Virginia

  16. Fast Track Hydrodemolition Surface

  17. Fast-Track Bid Items • Scarification of deck Surface- SQ YD. • Total Surface Fast-Track Hydro-demolition to remove bad concrete- SQ YD • Placement of Latex Concrete Overlay at consistent Depth – SQ YD • Variable Depth Latex Concrete for quantities above the consistent depth- CUBIC YARD material cost only

More Related