CIVIL ENGINEERING

properties of carbon cast concrete

2012-06-15T09:10:00.000+05:30

The use of carbon fiber grid over conventional reinforcement yields a number of unique properties to CarbonCast components: [7]

Lower weight - When carbon fiber grid replaces steel mesh in the face of concrete products, manufacturers can use less concrete cover to protect the mesh from corrosive elements. Non-corrosive carbon fiber eliminates the need for extra concrete Improved thermal performance - The relatively low thermal conductivity of carbon fiber permits CarbonCast components to provide higher R-values than conventional precast concrete Improved strength - Carbon fiber is four times stronger than steel by weight providing better surface crack control when used as secondary reinforcing and 100% composite action when used as a truss in insulated wall panel Comparable cost - Many applications receive savings in foundation and super structure (reduced weight), energy costs (insulation) and maintenance (reduced corrosion

Nanotechnology in concrete

2012-05-07T14:53:00.000+05:30

world financial center Shanghai- construction

2012-05-07T14:50:00.000+05:30

seven modern wonders of the world

2012-04-12T12:31:00.000+05:30

Bermuda triangle mysterious place in the world

2012-04-12T12:27:00.000+05:30

Mega Structure- Eiffel Tower history

2012-04-12T12:22:00.000+05:30

Future cities in the world 2050

2012-04-10T12:48:00.002+05:30

Future skyscraper in new york city in 2020

2012-04-10T12:44:00.002+05:30

Future house in 2020

2012-04-10T12:40:00.003+05:30

secrets of taj mahal

2012-04-10T08:21:00.000+05:30

hoover damage construction MEGA STRUCTURE

2012-04-10T08:12:00.000+05:30

burj-al-arab construction - mega structure

2012-04-10T08:07:00.000+05:30

Tunnel construction techniques

2012-04-09T11:45:00.000+05:30

Dubai rotating skyscraper

2012-04-07T22:51:00.000+05:30

future tallest building in the world

2012-04-07T22:47:00.000+05:30

longest tunnel in india under construction

2012-04-07T15:12:00.000+05:30

The arduous trek to Kashmir may soon be a thing of the past. A new passage to Srinagar now under construction will not only bring the regions of Jammu and Kashmir closer but will also end the isolation of the valley from the rest of the country.

A number of state-of-the-art tunnels are being dug through the Pir Panjal ranges, among others, for easy roadways and a pioneering railway line both of which will give easy access to the valley.

Even as the railways are planning a 90-km-long network of tunnels, the National Highways Authority of India (NHAI) has undertaken a project to upgrade the present national highway (NH 44) stretch from Jammu to Srinagar into four lanes. The project includes two major tunnels.

The 288-km distance between Jammu and Srinagar will be reduced to 238 km but more importantly the 10-hour journey will be covered in just about five hours, avoiding perilous points such as Khooni Nala (bloody path) where shooting stones slide at the speed of a bullet taking a heavy toll of life. At least, 10 people have lost their lives at such points in January-February.

The two tunnels will also end the snow-related traffic jams that last several days. The Chenani-Nashri Tunnel which is being blasted through the Mury formation range of the Shivalik range —derived from Mury village in Pakistan from where it starts —at an elevation of 1.2 km is 9 km long and will be the longest tunnel in the country when completed in 2016, the deadline for the entire project estimated to cost Rs. 10,600 crore The proposed two-lane tunnel with a separate escape route avoids Patnitop, a tourist spot during the winter for its snow, and the steep Nagroda bypass which the State government declared unfit for use after truck drivers found it difficult to negotiate not only the steep gradient but also the sharp and narrow bends on the range. “It will save us enormous time, about Rs. 250 in fuel, wear and tear and several other bottlenecks on each trip,” said truck driver Mushtaq Ali. However, twin tunnels with inbuilt escape routes in case of snow storm or blizzards, are being provided through Pir Panjal from Banihal to Quazigund at an elevation of 1.8 km. Though their entrances are not free from snow, experts maintain clearing a four-lane road of snow would be much easier than a two-lane one. Moreover, the mountains are steep and unstable posing a challenge to travellers. Engineers also consider it difficult to carve out a single four-lane road and intend to adopt the split road technology separating the ascending and descending stretches which will require erecting flexible steel tunnels during the construction period to protect existing traffic from falling stones. Every one in Kashmir is eagerly looking forward to the completion of the project, with the owner of a cricket bat manufacturing firm even having surrendered his land facing the national highway. One is not sure whether he was convinced by the official explanation of the roads being completed by 2014 and the tunnels by 2016 which will ensure smooth travel on this stretch and give his business a fillip. The four-year wait might get prolonged given that the NHAI is yet to award the contract for the 43-km-long Udhampur-Ramban and 36-km-long Ramban-Banihal stretches due to various reasons, including the fact these are among the toughest sections of the project. Virendra Singh, director of the project, however, said the proposals were likely to be cleared with revised cost estimates by the Union government and would be completed by June 2014. Timely clearance and construction of the two stretches is imperative as their traffic carrying capacity has to match those of the other stretches which would be opened as and when completed. A failure will lead to a major congestion at the two ends.

harlem river tunnel construction

2012-04-07T15:01:00.000+05:30

Past, present and future worlds tallest buildings

2012-04-02T22:48:00.001+05:30

10 Tallest Buildings In The World

2012-04-02T21:53:00.001+05:30

Future Technology Watch your day in 2020

2012-04-02T09:05:00.001+05:30

Thomas Britto B.E (civil): 061229-2 World's Fastest Elevator

2012-04-02T01:25:00.001+05:30

Thomas Britto B.E (civil): 061229-2 World's Fastest Elevator

how stress distributed in beams

2012-04-01T21:01:00.002+05:30

how to compact concrete- vibrators

2012-04-01T20:58:00.000+05:30

how to place concrete

2012-04-01T20:51:00.002+05:30

transparent concrete making video

2012-04-01T20:45:00.000+05:30