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The Federal Highway Administration has a top-level technology goal targeted toward the development and deployment of the “Bridge of the Future.” This is a conceptual short span bridge that demonstrates significant improvements over the current state of the practice – particularly with regard to ease and speed of construction and long-term durability.
The Federal Highway Administration has a top-level technology goal targeted toward the development and deployment of the “Bridge of the Future.” This is a conceptual short span bridge that demonstrates significant improvements over the current state of the practice – particularly with regard to ease and speed of construction and long-term durability.Initial studies under this initiative have identified durability of bridge decks and other superstructure elements adjacent to leaking joints as a critical item affecting the durability of a great number of bridges in the national inventory. Bridge deck waterproofing technology has taken significant steps forward in recent years and is seen as a major contributor to the solution of this problem going forward.The subject paper will outline the magnitude of the bridge deck deterioration issue; demonstrate the gains in technology that provide potential solutions from a thick film coating perspective; document the outstanding performance history of these thick film deck waterproofing abroad – particularly in Europe; and update the progress of demonstration, research, and initial implementation efforts in the US in which FHWA has participated.
Concrete and other cementitious surfaces are porous materials that will allow water and soluble contaminants to penetrate the structure leading to degradation. The effects of degradation can include efflorescence, laitance and physical defects such as cracking and spalling. Waterproofing concrete can protect it from freeze/thaw cycles, increase chemical resistance, and provide protection to imbedded reinforcing steel.
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Now that you as a specialty coating / lining contractor have joined the fast-growing technology of polyurea elastomeric coating & lining systems, what’s the next step? The polyurea technology has grown in use by significant volumes since the initial start in the early 1990’s. Applications include concrete coatings / linings, steel coatings, traffic deck systems and specialty coatings.
Choosing the right approach to water tower maintenance maximizes budgets and service life.