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 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 • • •

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.

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.

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

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.

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

Questions / Contact Info • • Ed Liberati, PE (502)693 -3253 eliberati@hughesgrp. com www. hydro-technologies. com • • AL Kenz 724 -334 -7877 modconal@yahoo. com www. modifiedconcrete. com