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1、the advantage and disadvantage of bituminous pavement and concrete pavementBituminous：An asphalt concrete surface will generally be constructed for high volume primary highways having an Average Annual Daily Traffic load higher than 1200 vehicles per day.7 Advantages of asphalt roadways include rela
2、tively low noise, relatively low cost compared with other paving methods, and perceived ease of repair. joint-less smooth ride surface ：The bituminous pavement is joint-less, and therefore provides a smooth ride surface .The bituminous pavement produces less sound than concrete pavement . The wear a
3、nd tear to the vehicle tyres are also less from bituminous pavements. Failure gradually：The failure of bituminous pavements compared to concrete pavement is gradual, whereas failure in concrete pavement could be sudden. possibility of quick repair: The bituminous pavement repair is quick, and curing
4、 time is less and therefore can be opened to traffic soon It allows stage construction . Pavement design with stage construction becomes quite useful when, there is a fund constraint, or, the traffic on a new pavement could not be estimated reliably lesser life cycle cost：Not only the initial invest
5、ment for bituminous pavement construction is less than concrete pavement, studies show that the overall life cycle cost of bituminous pavement is also low Bituminous pavements are generally not affected by the de-icing materials provision for stage construction:Because the bituminous pavements have
6、a greater flexibility of customized design. It can be designed according to the requirement of permissible noise, surface permeability, heavy duty traffic, skid, roughness level etc Disadvantages include less durability than other paving methods, less tensile strength than concrete, the tendency to
7、become slick and soft in hot weather and a certain amount of hydrocarbon pollution to soil and groundwater or waterways. The bituminous pavement is advantageous over concrete pavement because of its joint-less smooth surface, lesser life cycle cost, possibility of quick repair, provision for stage c
8、onstruction, bituminous material recyclibility, lower noise level from vehicle-tyre interaction etc. Pavement ：One advantage of cement concrete roadways is that they are typically stronger and more durable than asphalt roadways. They also can easily be grooved to provide a durable skid-resistant sur
9、face. its fuel saving:The heavy truck movement shows substantial fuel saving (ranging from 6 to 20% for different studies) while plying on the concrete road compared to asphalt road . It is postulated that since bituminous pavement undergoes deflection due to application of load, some energy is abso
10、rbed for deflecting the pavement, which otherwise could have been utilized to propel the vehicle - thus there is a saving in concrete pavement. low rutting potential:The concrete pavement virtually does not show any rutting. Therefore, driving on concrete pavement remains comfortable almost througho
11、ut the design period free-thaw resistance: The performance of the concrete pavement remains unaffected during the freeze-thaw condition compared to normal weather conditions. Therefore, no weight carrying restriction needs to be imposed during the freeze-thaw season - for those countries/ regions wh
12、erever it occurs durable skid resistance:Concrete provides better and durable skid resistance. It is generally less slippery in wet weather than bituminous pavement ( Longevity:The longevity of the concrete pavement is high (it is generally designed for 30 to 40 years). Unless there is design failur
13、e, the concrete pavement virtually does not require any maintenance. Only re-texturing of the top surface may have to be done routinely. better night-time visibility:The concrete pavement renders improved visibility conditions during night time, because of its better light reflecting characteristics
14、 than bituminous pavement . It as well offers a better visibility on rainy nights . heat reflecting characteristics :It reflects major part of the sunlight, and therefore does not result into heat island effect as observed in cities where bituminous roads are predominant Green:Concrete does not rele
15、ase odourous petroleum products to the air as that of bitumen Considering China context, China is self-sufficient in cement manufacturing. Bitumen, on the other hand, is obtained from crude petroleum, bulk amount of which is imported Disadvantages are that they typically have a higher initial cost a
16、nd are perceived to be more difficult to repair. Closing remarks As seen from the above discussions, it can be said that it is not possible to choose (between bituminous and concrete pavements) which one is the best option. It is also possibly not a good idea to look for which one is superior to the other. The choice should rather be governed by the project specific evaluation among these two alternatives, and other possible combinations.
