9-03.6 Vacant

Delete this Section and replace it with the following:

9-03.6  Aggregates for Asphalt Treated Base (ATB)
(May 5, 2015 APWA GSP)

9-03.6(1)  General Requirements
Aggregates for asphalt treated base shall be manufactured from ledge rock, talus, or gravel, in accordance with the provisions of Section 3-01 that meet the following test requirements:

Los Angeles Wear, 500 Rev. 	30% max.
Degradation Factor 	 	15 min.

9-03.6(2)  Grading
Aggregates for asphalt treated base shall meet the following requirements for grading:

Sieve Size	Percent Passing	
2″	100	
½″	56-100	
No. 4	32-72	
No. 10	22-57	
No. 40	8-32	
No. 200	2.0-9.0	

All percentages are by weight.

9-03.6(3)  Test Requirements
When the aggregates are combined within the limits set forth in Section 9-03.6(2) and mixed in the laboratory with the designated grade of asphalt, the mixture shall be capable of meeting the following test values:

% of Theoretical Maximum Specific Gravity (GMM) (approximate) 	93@ 
100 gyrations
AASHTO T324, WSDOT TM T718 or ASTM D3625 			Pass
(Acceptable anti-strip evaluation tests)

The sand equivalent value of the mineral aggregate for asphalt treated base (ATB) shall not be less than 35.