Title:
Bridge Deck and Garage Floor Scarification By Hydrojetting
Author(s):
Shiraz D. Tayabji
Publication:
Concrete International
Volume:
8
Issue:
5
Appears on pages(s):
43-48
Keywords:
DOI:
Date:
5/1/1986
Abstract:
Construction Technology Laboratories conducted an investigation to evaluate the effectiveness of the Conjet concrete removal system. The system uses a high pressure jet of water to rapidly remove unsound concrete at the surface of bridge decks, parking garage floors, and pavements. A full-scale bridge deck panel was obtained for use in demonstrating the effectiveness of the hydrojettig system. The demonstration project included scarification of the deck panel to various depths using the system, construction of six sections of bonded overlays on the prepared surfaces, and determination of shear strength at the interface between the overlay and base concrete. Test results verify that the system did effectively scarify the deck to provide a surface that enable excellent bonding to take place between the overlay and base concrete.