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Showing posts from September, 2017

INFRASTUCTURAL RACE: CHINA A CHEETAH ; INDIA A SQUIRREL

Don’t you find it odd when you read headlines in the newspaper which says china builds a nineteen storey building within 36 hours or a replace a bridge within 43 hours while in India even a project as minute as covering of drains in the city takes over two years or completion of a fly-over in four years! One of the amazing things in China is how fast everything gets built. If we did things this way in India, we would have high speed rail connecting every town and subways underneath every city.  I tried to dig in and find about the lapses present in India and why china is so ahead of us in this race while even though both the countries nearly have the same population.  ADVANTAGES DISPUTE OVER LAND The first thing to build any structure is a need for land. That’s the first step towards building one. And the Chinese have a huge advantage of not worrying about the process. The state or better the central authority owns all the land and hence all the legal p...

Move over, Superman! New method sees through concrete to detect early stage corrosion

When you undergo a fall or  undergo some  other traumatic blow, the first thing the doctor will do is take an X-ray, CT scan or MRI to determine if anything has been damaged internally. Researchers at the National Institute of Standards and Technology (NIST) are using the same principle, but in a more powerful form, to detect corrosion, the primary danger threatening the strength of the steel framework within the nation's bridges, highways and other aging physical infrastructure. A non-invasive  "spectral fingerprint" technique that reveals the corrosion of concrete-encased steel before it can cause any significant degradation of the structure it supports. current  imaging methods for uncovering corrosion use microwaves to record changes in the physical state of the affected steel, such as changes in the thickness of a rebar within the concrete of a bridge or other structure. that's a real problem since the average age of the 400,000 steel-reinforced concrete br...