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Asphalt, also known as bitumen, is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used. The word is derived from the Ancient Greek ἄσφαλτος ásphaltos. The largest natural deposit of asphalt in the world, estimated to contain 10 million tons, is the Pitch Lake located in La Brea in southwest Trinidad, within the Siparia Regional Corporation.
Lawrence Livermore National Laboratory (LLNL) is a federal research facility in Livermore, California, United States, founded by the University of California, Berkeley in 1952. Originally a branch of the Lawrence Berkeley National Laboratory, the Lawrence Livermore laboratory became autonomous in 1971 and was designated a national laboratory in 1981.
A road surface, or pavement, is the durable surface material laid down on an area intended to sustain vehicular or foot traffic, such as a road or walkway. In the past, gravel road surfaces, cobblestone and granite setts were extensively used, but these have mostly been replaced by asphalt or concrete laid on a compacted base course. Asphalt mixtures have been used in pavement construction since the beginning of the 20th century and are of two types: metalled roads and unmetalled roads. Metalled roadways are made to sustain vehicular load and so are usually made on frequently-used roads. Unmetalled roads, also known as gravel roads, are rough and can sustain less weight. Road surfaces are frequently marked to guide traffic.
Asphalt concrete is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century. It consists of mineral aggregate bound together with asphalt, laid in layers, and compacted. The process was refined and enhanced by Belgian-American inventor Edward De Smedt.
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public transportation as well.
Tokyo Institute of Technology is a national research university located in Greater Tokyo Area, Japan. Tokyo Tech is the largest institution for higher education in Japan dedicated to science and technology, one of first five Designated National University and selected as a Top Type university of Top Global University Project by the Japanese government. It is generally considered to be one of the most prestigious universities in Japan.
The Air Force Research Laboratory (AFRL) is a scientific research organization operated by the United States Air Force Materiel Command dedicated to leading the discovery, development, and integration of aerospace warfighting technologies, planning and executing the Air Force science and technology program, and providing warfighting capabilities to United States air, space, and cyberspace forces. It controls the entire Air Force science and technology research budget which was $2.4 billion in 2006.
Idaho National Laboratory (INL) is one of the national laboratories of the United States Department of Energy and is managed by the Battelle Energy Alliance. While the laboratory does other research, historically it has been involved with nuclear research. Much of current knowledge about how nuclear reactors behave and misbehave was discovered at what is now Idaho National Laboratory. John Grossenbacher, former INL director, said, "The history of nuclear energy for peaceful application has principally been written in Idaho".
The Institute for Plasma Research (IPR) is an autonomous physics research institute located in India. The institute is involved in research in aspects of plasma science including basic plasma physics, research on magnetically confined hot plasmas and plasma technologies for industrial applications. It is a large and leading plasma physics organization in India. The institute is mainly funded by Department of Atomic Energy. IPR is playing major scientific and technical role in Indian partnership in the international fusion energy initiative ITER. It is part of the IndiGO consortium for research on Gravitational Waves.
The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section. The PCI is widely used in transportation civil engineering and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. It is a statistical measure and requires manual survey of the pavement. This index was originally developed by the United States Army Corps of Engineers as an airfield pavement rating system, but later modified for roadway pavements and standardized by the ASTM. The surveying processes and calculation methods have been documented and standardized by ASTM for both roads and airport pavements:
Road slipperiness is a condition of low skid resistance due to insufficient road friction. It is a result of snow, ice, water, loose material and the texture of the road surface on the traction produced by the wheels of a vehicle.
Bioasphalt is an asphalt alternative made from non-petroleum based renewable resources.
Nat or NAT may refer to:
Uster Technologies, in its industry often called USTER, is a Swiss manufacturer of analytical instruments and on-line monitoring systems for the textile industry, based in Uster, Switzerland. It emerged as a management buy-out form of the Zellweger Luwa Group in 2003. From 2007 until 2012 the company was publicly traded and listed on the main segment of SIX Swiss Exchange. Since 2012 Uster Technologies is a subsidiary of Toyota Industries Corporation.
BioCity Nottingham is a bioscience science park in central Nottingham in the United Kingdom. It is the UK's largest bioscience innovation and incubation centre.
Cooper Research Technology Limited is a British manufacturer of high-performance civil engineering materials testing equipment, based in Ripley, Derbyshire, England. The company specialises in the design and manufacture of laboratory testing equipment used for the investigation of the mechanical properties of materials used in road construction. While at the University of Nottingham in the 1980s, founder Keith Cooper designed a method of measuring and assessing the mechanical properties of asphaltic materials with the equipment known as the Nottingham Asphalt Tester (NAT), later superseded by the UTM-NU.
Nepal Academy of Science and Technology (NAST), previously RONAST, is an autonomous apex body established in 1982 to promote science and technology in Nepal. With the implementation of federal structure by the government of Nepal, it has opened its first provincial office at Mahendranagar.
A dynamic shear rheometer, commonly known as DSR, is used for research and development as well as for quality control in the manufacture of a wide range of materials. Dynamic shear rheometers have been used since 1993 when Superpave was used for characterising and understanding high temperature rheological properties of asphalt binders in both the molten and solid state and is fundamental in order formulate the chemistry and predict the end-use performance of these materials.
Plastic roads are made entirely of plastic or of composites of plastic with other materials. Plastic roads are different from standard roads in the respect that standard roads are made from asphalt concrete, which consists of mineral aggregates and asphalt.
Nanocem is a consortium of academic and private industry groups that researches the properties of cement and concrete on the nano- and micro-scales, with a particular focus on reducing carbon dioxide emissions at all stages of production. Nanocem was founded as an independent consortium in 2004 after a rejection of a 2002 bid to the Network of Excellence. The research is conducted at a fundamental level. Yet high levels of industry involvement allow to focus on solutions that can work in practice and not just in theory.
References
- ↑ Porter, John (2002). The Motorway Achievement: Frontiers of Knowledge and Practice, Volume 2. p. 284. ISBN 9780727731975.
- ↑ King, Nick. "emda grant puts Cooper Research Technology on the road to growth". East Midlands Development Association. Archived from the original on 20 March 2012. Retrieved 13 July 2011.
- ↑ Lincolnshire County, Council. "Nottingham Asphalt Tester". LCC. Archived from the original on 10 December 2019. Retrieved 13 June 2011.
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