Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Continuosly Reinforced Concrete Pavement

Continuosly Reinforced Concrete Pavement as the title suggests this type of pavement is reinforced throughout in longitudinal direction. This type of pavement has no transverse joints unless and until there is end of pavement or the pavement comes in contact with some other pavement or bridge. A longitudinal joint exists only if the road is wider than 14 feet. Due to reduction of joints smooth and continuous riding is possible resulting in fuel saving. Also CRCP roads are maintenance free if properly constructed and care is taken while placement of steel. Once CRCP roads are constructed they need not to be taken care of for the next 50-60 years. The principal behind this roads is that Let the road crack, exactly opposite as in case of other type of roads where we avoid crack formation at any cost. CRCP is aloud to crack due to which stresses in the pavement are released. The cracks formed are held tightly by the reinforcement, due to which widening and deepening of cracks is restricted. Hence we can conclude that in CRCP controlled cracking is permitted. The initial cost of CRCP is high, but as it is maintenance free, and lasts for decades, overall cost of CRCP is less as compared to other type of reinforced concrete pavements. Study and observations have shown that this type of roads are alarmingly successful, hence CRCP is widely used in USA, GERMANY, BRITAN, and several other developed and developing nations. Use of CRCP will enhance the cement, and steel industries; it will reduce the fuel consumption by vehicles, and will save lots of money required for frequent construction and repairs of other type of pavements. Considering all above aspects CRCP will surely boost the economy of any country.

The important features of continuously reinforced concrete pavement is that a continuous steel reinforcement set into the cement and the the omission of transverse joints other than construction and terminal joints. he volumetric changes developing in the concrete result in the development of numerous hairline cracks developed at random instead of being concentrated in the contraction joints. To ensure the structural continuity and to control the racking of the pavement, the amount of longitudinal reinforcement is determined. The great number of cracks fine enough so as not to allow the penetration of de-icing salts must be allowed to develop. Moreover, the proper aggregate interlock must be ensured so that higher load transfer efficiency can be achieved.
The fact that it needs little or no maintenance is the main argument towards the use of this type of slabs. The savings are direct savings as well as the savings for maintenance though the Initial costs are heftier due to the reinforcement. In the long run of 10 to 15 years the costs are similar to that of ordinary pavement.

get the report here:

Forum Jump:

Users browsing this thread:
1 Guest(s)

Powered By MyBB, © 2002-2024 iAndrew & Melroy van den Berg.