West Penn Hospital

Location: Pittsburgh, Pennsylvania

Structure: Parking Garage

Problem

The issue within the structure included garage floor concrete deterioration and corrosion of the imbedded steel wearing. The problem was accelerated by chemical/physical breakdown, chloride contamination, steel corrosion, wear/impact, and freeze/thaw.

Solution

SURTREAT® was applied to improve the chemical and physical properties of the concrete, inhibit deterioration, improve durability and longevity of the parking structure by:

• Increasing compressive strength
• Reducing permeability
• Elevating/Moderating pH
• Reducing chemical (acid/chloride) contamination
• Reducing rate of corrosion of the imbedded rebar and surrounding steel fixtures

SURTREAT® Solutions

• Inhibits salt, water, air and contaminates from penetrating the concrete and forms a better seal in the pores and micro cracks

• Controls pH and maintains the high alkalinity in the  concrete and is highly acid resistant

• Migrates to the rebar in liquid and ionic phase and reacts to form a very stable passivating film – more stable than in new concrete

• Converts rust to a stable, inert compound – and increases compressive, flexural, and tensile strength. Also increases hardness and abrasion resistance

• Perform inspection of existing structure

• SURTREAT® solutions were applied using a mobile dispensing unit and by spraying using an electric and hand pump