[BUCH][B] Effect of aggregate gradation on measured asphalt content
PS Kandhal, SA Cross - 1993 - web-ha.eng.auburn.edu
PS Kandhal, SA Cross
1993•web-ha.eng.auburn.eduIt is necessary to control the asphalt content closely in hot mix asphalt (HMA) mixes to obtain
optimum serviceability and durability. However, coarser mixes (binder and base courses)
made with larger maximum particle-sized aggregate tend to segregate, The resulting
variation in the aggregate gradation of the sampled HMA mix can significantly affect the
measured asphalt content. The objective of this research was to evaluate the effect of
aggregate gradation on the measured asphalt content. Actual mix composition (asphalt …
optimum serviceability and durability. However, coarser mixes (binder and base courses)
made with larger maximum particle-sized aggregate tend to segregate, The resulting
variation in the aggregate gradation of the sampled HMA mix can significantly affect the
measured asphalt content. The objective of this research was to evaluate the effect of
aggregate gradation on the measured asphalt content. Actual mix composition (asphalt …
Abstract
It is necessary to control the asphalt content closely in hot mix asphalt (HMA) mixes to obtain optimum serviceability and durability. However, coarser mixes (binder and base courses) made with larger maximum particle-sized aggregate tend to segregate, The resulting variation in the aggregate gradation of the sampled HMA mix can significantly affect the measured asphalt content. The objective of this research was to evaluate the effect of aggregate gradation on the measured asphalt content.
Actual mix composition (asphalt content and gradation) data from a major interstate paving project was obtained and analyzed. A total of 547 binder course and 147 wearing course mix samples were obtained behind the paver and subjected to extraction analysis, A substantial amount of segregation was observed in the binder course mix which provided the opportunity to correlate the aggregate gradation with the measured asphalt content.
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