caltrans gap graded abu sheba crusher 8 mix study 1097

Acoustical Absorption of Open-Graded, Gap ... - ucprc - UC Davis

Oct 31, 2007 ... The study confirmed that greater acoustical absorption is obtained from ... showed that the open-graded mixes have higher absorption values than gap- and ... Surface Condition and Road-Tire Noise on Caltrans Experimental ... The age of most of the pavement sections ranged between 1 and 8 years.

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Chapter 7 Maintenance Overlays - Caltrans

CHAPTER 8 THIN MAINTENANCE OVERLAYS ... Gap Graded Mixes (Type G) ... The aggregate gradations for dense graded mixes are provided in the ..... study on I-80 that traffic noise levels have decreased and continue to be lower than...

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