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Benefits of Warranties to Indiana

机译：印第安纳州保修的好处

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Several states have experimented with performance warranties on hot- mix asphalt (HMA) pavements. Generally, the quality of warranted HMA is perceived to be better. Also, it is believed that HMA extends pavement life. Various methods can be used to define the benefits of warranties. Benefits have to be related to the performance life of the pavement and the cost. This study documents the effectiveness of the Indiana 5-year performance warranties and demonstrates that projected lifetimes of the warranted HMA pavements are being extended an additional 9 years in evaluations of international roughness index (IRI) and rutting criteria over the typical design life of the pavements. The cost- effectiveness of the warranted pavements, even though the initial costs are 5% to 10% higher, is significant when one considers the extended life of the warranted pavements. Overall cost to maintain the network Interstate smoothness at a constant 2002 value is $1.08 billion with warranties and $1.47 billion for nonwarranty projects, or a savings for warranty projects of 27%. Warranty projects require fewer demands on budgets and provide for lower network IRI at the same effective age of the pavements. Indiana HMA warranties have accomplished the initial goals of both the Indiana Department of Transportation and the HMA industry by providing smoother and safer pavements with fewer defects over a longer period of time, which reduces delays and congestion. At the same time, the economic benefits of warranted pavements are significant.
机译：一些州已经对热拌沥青路面进行了性能保证试验。通常，保证的HMA的质量会更好。另外，据信HMA延长了路面寿命。可以使用多种方法来定义保修的好处。收益必须与人行道的使用寿命和成本有关。这项研究记录了印第安那州5年性能保证的有效性，并证明了在国际人行道的典型设计寿命中，对国际粗糙度指数（IRI）和车辙标准的评估将保证的HMA路面的预期使用寿命延长了9年。 。即使最初的成本要高出5％到10％，但保证人行道的成本效益还是很重要的。保持网络州际平滑度为2002年不变值的总成本为10.8亿美元（带担保），14.7亿美元（非担保项目），或27％的担保项目节省。保修项目对预算的要求更少，并且在人行道的有效使用年限内提供了较低的网络IRI。印第安纳州HMA保证通过在更长的时间内提供更光滑，更安全，路面更少缺陷的路面来达到印第安纳州交通运输部和HMA行业的最初目标。同时，准许人行道的经济利益是巨大的。

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