ABSTRACT

The concept of insulating cooled heat engine components such as gas turbine blades and diesel engine valves from hot working fluids with a ceramic thermal barrier coating is by no means new. A practical system, however, has only been identified in the past few years. Thermal barrier coating (TBC) are applied to metallic components to reduce metal temperature, reduce life cycle cost, increase the environmental resistance and in some cases reduce noxious exhaust emissions. The selection of TBC involves many consider ....etc

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Concrete Bridges


A. EMIN AKTAN, Drexel University
MICHAEL P. CULMO, CME Associates, Inc.
DAN M. FRANGOPOL, University of Colorado
CATHERINE W. FRENCH, University of Minnesota
BASILE G. RABBAT, Portland Cement Association
MARY LOU RALLS, Texas Department of Transportation
HENRY G. RUSSELL, Henry G. Russell, Inc.
DAVID H. SANDERS, University of Nevada
JOSEPH SHOWERS, Parsons Brinckerhoff
MAHER K. TADROS, University of Nebraska
STANLEY W. WOODS, Wisconsin Department of Transportation


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magine if killing flu viruses and other microbes were as simple as turning on a light.

Exposing a unique surface coating to light may in fact hold the key to protecting you from virtually all viruses and bacteria, including the feared avian flu.

Laboratory testing of a novel, permanent nano-coating, developed in collaboration by researchers at North Carolina State University College of Textiles and Emory University School of Medicine, has been shown to kill or inactivate most viruses and bacteria when exposed to visible light. Early tes ....etc

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ANALYSIS OF CATALYTIC COATING IN THE COMBUSTION CHAMBER IN FOUR STROKE ENGINES

ABSTRACT:


The analysis of catalytic coating in the combustion chamber in four

stroke engine is done in order to improve the performance of the vehicle and also to

reduce the percentage of harmful pollutants in the exhaust gas. In four stroke engines,

the combustion chamber is modified by applying catalytic coating means of

electroplating. Catalytic materials are used in order to provide minimize the pollutant
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Totally Precast Concrete Bridges
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High performance concrete bridges
introduction
HPC is made with some basic ingredients but has totally different microstructure than ordinary concrete
HPC is an engineered concrete obtained through a careful selection
The low water/binder ratio of HPC that is its universal characteristics
It has very dense microstructure having a very fine and more or less well connected capillary system
Dense microstructure of HPC makes the migration of aggressive environmental conditions.
100 year old bridge
Lake alv ....etc

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Advantages of Prestressed Concrete Bridges



Owners and designers have long recognized the low initial cost, low maintenance needs and long life expectancy of prestressed concrete bridges. This is reflected in the increasing market share of prestressed concrete, which has grown from zero in 1950 to more than 55 percent today.

This growth continues very rapidly, not only for bridges in the short span range, but also for spans in excess of 150 feet which, heretofore, has been nearly the exclusive domain of structural steel.

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PROTECTIVE COATINGS FOR CONCRETE BRIDGES



Protection of structures is very important for increasing the life of the structure. There is a growing national concern about premature deterioration of our concrete infrastructure projects such as bridges, aqueducts etc. requiring early repair and/or replacement. Use of protective coatings will increase the durability and hence the life of these structures. As most of these structures are made up of concrete and steel, the role that coatings play in protecting the s ....etc

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