Does anyone have experience with the use of chemical demolition agents 1

[VoyageofDiscovery]

I am rehabilitating a steel bridge and the concrete end diaphragm has embedded steel bracing utilized during original erection. I am redecking the bridge and reconfiguring the abutment/diaphragm. I need to remove and replace/reconfigure the concrete of the end diaphragm without damaging the steel bracing.

Does anyone have experience with the use of soundless chemical demolition agents (SCDAs)?

VOD

 

[turnitup]

Have you looked at hydro demolition? In the inset on the web page posted below is pictures of a similar project to yours

http://mmwaterjet.com/hydro.htm

 

[DRC1]

Try Special Breaks at "

http://www.ram-aid.biz"

They specialize in this work. You may be able to do this with 35 lb. chipping guns or why not simply install new bracing before removing the existing?

 

[unclesyd]

I've seen this material used to breakup some substantial reinforced concrete machine bases. In discussions with the supervisor of the group that did the work he mentioned a material called Nonex that they sometime use outside.

http://demolitiontechnologies.com/

http://www.nonex.com/

 

[VoyageofDiscovery]

Thank you all for the info.

VOD

 

[msquared48]

I seemtop haverun across ads for something called Bristar I believe in years past - a chemical agent that causes concrete to expand and crack.

Mike McCann
MMC Engineering

 

[msquared48]

I seem to remember running across ads for something called Bristar I believe in years past in the "Civil Engineering" magazine - a chemical agent that causes concrete to expand and crack. It is slow acting, not exposive.

Mike McCann
MMC Engineering

 

[unclesyd]

msquared48.

If you look at this website it talks about Bristar being taken off the American market and replaced by Bustar.

http://demolitiontechnologies.com/