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- W2590145521 abstract "The growing level of heavy traffic observed in Brazilian main roads, predominantly flexible pavements, has shown that these structures are not presenting the expected performance, taking account the investments made. In these structures, the asphaltic surface works under excessive levels of tension strain, which causes earlier cracking. On the other hand, the composite pavements, in which a concrete layer is used as base layer under the asphaltic surface, have been used in several countries, showing good performance. Besides, the fact that this structure presents lower deformability helps the asphaltic surface as it is submitted to lower levels of tension strain, or even in compression regime only, increasing the durability and time to develop fatigue cracking. The present study intends to compare the performance between a conventional flexible pavement and a composite pavement using the Compacted Concrete Rolled – CCR, as base layer, being the asphaltic surface composed of a mixture of asphalt and rubber. In order to carry out this comparison, the pavement design assumed a heavy traffic road (N82kN = 1,0x 10 8 , USACE). The sub-grade layer presents a California Bearing Ratio of 7.0%. Also presented in this paper, are the mechanical parameters obtained from the materials applied and the methodology for pavement design. A structural analysis is also presented in order to show the influence of the presence of hot asphalt mixture layer in the settlement of CCR layer and this in the pavement performance. The new methodology is therefore proposed as an alternative in order to improve Brazilian pavement performance for heavy traffic highways." @default.
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- W2590145521 date "2008-01-01" @default.
- W2590145521 modified "2023-09-23" @default.
- W2590145521 title "Composite Pavement as an Alternative for Heavy Traffic Brazilian Highways" @default.
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