Inorganic polymer fiber composites for protection of structures

The primary focus of this thesis is to demonstrate the suitability of an inorganic polymer composite for transportation structures. The three major themes are: field application, graffiti resistance, and evaluation of self-cleaning and de-pollution properties. Previous Studies have demonstrated the potential of the composite made of alumino-silicate polymer and carbon fibers for field applications. This thesis presents results of three field applications, evaluation of graffiti resistance including removal techniques and documentation for self-cleaning and de-pollution properties.;For field application, pigment combinations were developed to match the colors of existing structures or to blend with the surrounding areas. Two field applications were done primarily by the author and the third one was completed with the help of daily laborers supplied by a contractor. In all three cases the applications were completed without encountering any technical problems.;In the area of graffiti resistance, commercially available products are reviewed. After evaluation of various removal techniques the author recommends the use of citric-based cleaner with high pressure washer or high pressure water with baking soda.;For self cleaning, both laboratory and filed tests were conducted. The results show that the coating effectively cleans organic pollutants and the results compare well with those reported for anatase Titanium Dioxide containing concrete and mortar. Performance in the field can be simulated in the laboratory by using UV lamps. The results of the de-pollution study also shows that the results are comparable to the results reported in the European PICADA study where they used concrete or concrete mortar containing Titanium Dioxide.;Based on the results obtained it can be concluded that the composite is ready for large scale field applications.