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U.S. Department of Transportation Federal Highway Administration 1200 New Jersey Avenue, SE Washington, DC 20590 202-366-4000
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U.S. Department of Transportation Publication No. FHWA-NHI-10-034 Federal Highway Administration December 2009 Technical Manual for Design and Construction of Road Tunnels —
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Over the last twenty years, remarkable advances have taken place in the research and application of ultra-high performance concrete (UHPC), which exhibits excellent rheological behaviors that include workability, self-placing and self-densifying properties, improved in mechanical and durability performance with very high compressive strength, and non-brittleness behavior.Cited by 6
Reinforced concrete - Wikipedia
Reinforced concrete (RC) (also called reinforced cement concrete or RCC) is a composite material in which concrete's relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars and is usually embedded passively in the concrete before the ...
Prestressed concrete - Wikipedia
Prestressed concrete is a highly versatile construction material as a result of it being an almost ideal combination of its two main constituents high-strength steel, pre-stretched to allow its full strength to be easily realised; and modern concrete, pre-compressed to minimise cracking under tensile forces.
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Bridge - Wikipedia
A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or road, without closing the way underneath.It is constructed for the purpose of providing passage over the obstacle, usually something that can be detrimental to cross otherwise. There are many different designs that each serve a particular purpose and apply to different situations.
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Journal of the Chinese Institute of Engineers, Vol. 26, No. 4, pp. 523-530 (2003) 523 INFLUENCES OF FIBER CONTENT ON PROPERTIES OF SELF-COMPACTING STEEL FIBER REINFORCED CONCRETE
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Concrete and Cement are the most widely used building materials in the construction industry for over 100 years. Over the years, this construction material has been enhanced and developed to fit to the usage and requirements at site. Several researches are happening around this topic to increase the durability, strength and performance of this building material.
NCHRP - Transportation Research Board
20-07/Task 073 High Strength Metric Fasteners for Bridge Applications. ... 20-07/Task 076 Installation of Fiber Optic Facilities on Highway and Freeway Rights of Way. ... 20-07/Task 364 Revision of AASHTO PP-74 Test Method for Optical Sizing and Roundness Determination of Glass Beads Utilized in Traffic Markings.
Seismic retrofit - Wikipedia
Strategies. Seismic retrofit (or rehabilitation) strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials (e.g. fiber-reinforced polymers (FRP), fiber reinforced concrete and high strength steel). Retrofit strategies are different from retrofit techniques, where the former is the basic approach to ...
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Engineering Services (DES) Caltrans
The Division of Engineering Services (DES) is the lead project delivery organization for the design, construction, and oversight of bridge and other transportation structures. DES is a comprehensive, multidisciplinary engineering organization committed to providing our clients with quality products and services in a timely manner.
In addition, TRB issues a variety of other publications, ranging from the Highway Capacity Manual to general-interest periodicals. TR News, the Board’s bimonthly magazine with an international circulation of 10,000, features timely articles on innovative and state-of …
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FHWA Lighting Handbook August 2012 - Safety Federal ...
Experimental condition variables included lamp type (high-pressure sodium and metal halide), vertical illuminance level, color of pedestrian clothing, position of the pedestrians and surrogates in the crosswalk, and the presence of glare. Two additional lighting systems, a Probeam luminaire and ground-installed LEDs, were also evaluated.
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