Differences Of The Austroads Pavement Design Vs. AASHTO Pavement Design

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In this research is to show the differences of the Austroads pavement design and AASHTO pavement design. Both Austroad and AASHTO are used for pavement design to design the pavement layers but both have different methodology and assumptions. So that, the research will be the focus and compare on their methodology and assumptions. According to both assumptions, a simple road that been modelled by using the two type of software such as CIRCLY and KENLAYER. CIRCLY and KENLAYER are very important software for pavement design and both are commonly used in Australia. Austroads pavement design has a design guide in 2003. This pavement design guide contains two types of design processes for flexible pavements. The design processes are the empirical…show more content…
Moreover, the mechanistic design is a rational and scientific fundamentals design. This design is also very flexible and portable for all the pavement design. Furthermore, mechanistic design can be known as semi-empirical in pavement design. For the mechanistic design process, the first process is about the design traffic (ESA). To design the traffic, traffic loading is the main parameter to be known. Traffic loading contains four type of design such as seal design, highway pavement design, airports design, ports and log handling yards. Seal design is using the equivalent light vehicles, for examples to converts the heavy vehicles to equivalent light vehicles (ELV). Highway pavement design is using heavy commercial vehicles (HCVs) only and converted to Equivalent Standard Axles (ESA) but ignore the light vehicles. Airports design only use the special loading formula. For ports and log handling yards, they are using the 4th power rule only for converting the loads without using the ESA. The second process is a proposed pavement model. The pavement model includes the ESA loading and the layers defined by E, v and h. pavement model also includes the anisotropic and
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