Here is a great paper on repairing and maintaining concrete. it is an
Introduction to Repair and Maintenance of Concrete Floors Sponsored by: Structural Preservation Systems Inc.
Length: 20 pages
Content Type: White Paper
As the concrete infrastructure in industrial plants and warehouses continue to age, there is an increasing need for sound, proven condition evaluations and repair strategies for reinforced concrete structures. After years of service and exposure to severe environments, the aging industrial infrastructure that store, manufacture, process, treat and dispose of products are in need of substantial repair, restoration and strengthening.
Here is the link, you just have to give some info to download it - it is safe. It comes from Plant Services - I write for them from time to time:
http://pls-media.com/lrd3_AAR1tAAACO4B
(hope you can open it up...)