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- W2242201492 abstract "Much effort has been expended by researchers in the development of new procedures for characterizing asphalt cements. Such procedures have long been needed to improve the day-to-day monitoring of asphalt composition. Furthermore, the development of these procedures is crucual to the long-term research effort directed at improving the quality of asphalt binders. High-pressure gel permeation chromatography (HPGPC) is one of the procedures currently being evaluated that has produced encouraging results. Some evidence has been presented to indicate that this procedure may be useful for predicting the performance of asphalts. However, some of the results from HPGPC analysis are not fully understood; for example, the relationship between HPGPC data and viscosity is still obscure. Consequently, the main objective of this project was to study the relationship of HPGPC data to viscosity and penetration. In this project, the three products of a residuum oil supercritical extraction refinery unit were blended to produce asphalts of varying composition. Thus, these asphalts are all from the same crude source and refinery process; any variation in their rheology is directly attributable to changes in their chemical composition. It was established that there is a quantitative relationship between HPGPC data and the rheological properties of the blended asphalts. In addition, it was determined that changes in the asphalt composition were accompanied by corresponding changes in the HPGPC profile. Therefore, it was concluded that HPGPC may be useful for monitoring changes in asphalt properties that occur during the construction process and subsequent exposure to the elements." @default.
- W2242201492 created "2016-06-24" @default.
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- W2242201492 date "1986-01-01" @default.
- W2242201492 modified "2023-09-26" @default.
- W2242201492 title "RELATIONSHIP BETWEEN HIGH-PRESSURE GEL PERMEATION CHROMATOGRAPHY DATA AND THE RHEOLOGICAL PROPERTIES OF ASPHALTS" @default.
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