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- W89568625 abstract "Asphalt rubber (AR) has been used in the United States since 1960s. Because the AR binder contains the crumb rubber modifier manufactured from waste tires, it has significant environmental advantages. Over the years, laboratory and field performances have shown that the rubberized hot mix asphalt (RHMA) using AR can extend pavement life, resist reflective cracking, and reduce noise. This paper evaluates the cost benefits of using AR hot mixes using current cost and performance data with the life cycle cost analysis (LCCA) approach. In order to obtain the true performance of the asphalt rubber hot mix asphalt, the Caltrans project database was searched for RHMA applications. Total 126 asphalt rubber projects from Caltrans 12 districts over the last 15 years have been located and detailed plans were evaluated. The treatment life was estimated from the start of a project until the next surface treatment on the same project location. The cost information was from the Caltrans office of engineeri¯s cost bidding website. The life cycle cost analysis of each project location has been conducted using the current Caltrans LCCA approach under local traffic and climate conditions. The Caltrans LCCA was based on the FHWA RealCost procedure and using the California's local data. This paper presents the Caltrans LCCA results considering both agency costs and user costs. Both deterministic and probabilistic results show that RHMA are more cost effective than conventional HMA in most scenarios." @default.
- W89568625 created "2016-06-24" @default.
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- W89568625 date "2012-01-01" @default.
- W89568625 modified "2023-09-25" @default.
- W89568625 title "Life-Cycle Cost Analysis Comparison of Rubberized and Conventional Hot-Mix Asphalt in California" @default.
- W89568625 hasPublicationYear "2012" @default.
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