The most compelling method I've seen involves composite fiber wrapping.
From: MSSROLLO(--nospam--at)aol.com [mailto:MSSROLLO(--nospam--at)aol.com]
Sent: Monday, April 10, 2000 8:01 AM
Subject: externally reinforcing concrete beams
Does anyone have any comments on successful methods of externally
concrete beams. I have seen some various information on internet but have
never used any of the products.
I would most likely be looking to increase the strength at least 20% over
the original concrete beam design.
Thanks in Advance