7-9 .9850 120 .9792 .9763 220 .9452 .9380 320 .9122 .9010 .9338 125 .9775 .9744 225 .9436 .9361 325 .9105 .8992 .9825 130 .9758 .9725 230 .9419 .9343 330 .9089 .8974 .9812 135 .9740 .9705 235 .9402 .9324 335 .9073 .8956 .9800 140 .9723 .9686 240 .9385 .9305 340 .9057 .8938 .9788 145 .9706 .9666 245 .9369 .9286 345 .9040 .8920 .9775 150 .9689 .9647 250 .9352 .9268 350 .9024 .8902
702.09 Asphalt Filler for Structural Plate Arches Asphalt for filling spaces between the
structural plates and the substructure metal connectors of the arch shall conform to the requirements for bituminous material of AASHTO M190 or of AASHT O M320, Table 1, for PG 64-28 or PG 58 -28.
702.12 Emulsified Asphalt Sealing Compound Emulsified asphalt sealing compound
shall be an approved commercially prepared product manufactured for specific protective coating, colored as required. It shall contain fillers, pigmen ts and sand or fibrous materials suspended in a suitable emulsified asphalt or tar. It shall be of such consistency that it can be applied at atmospheric temperatures and capable of being eas ily diluted with the addition of water and mixed by hand stirring at the site of application. SECTION 703 - AGGREGATES
703.07 Aggregates for HMA Pavements Coarse and fine aggregate for hot mix asphalt
pavements shall be of such gradation that when combined in the proper proportions, including filler, if required, the resultant blend will meet th e composition of mixture for the type of pavement specified. Coarse aggregate, that material retained on the No. 4 sieve, sh all be crushed stone or crushed gravel and, unless otherwise stipulated, shall consist of clean, tough, durable fragments free from an excess of soft or disintegrated pieces a nd free from stone coated with dirt or other objectionable matter. Coarse aggregate shall not exceed an absorption of 2.0 percent by weight as determined by AASHTO T 85. Fine aggregate, material that passes the No. 4 sieve, shall con sist of natural sand, manufactured sand, or a combination of these. It shall consist of hard, tough grains, free from injurious amounts of cla y, loam, or other deleterious subs tances. Fine aggregate shall not exceed an absorption of 2.3 percent by weight as determined by AASHTO T 84. All individual aggregates for hot mix asphalt pavements shall m eet Table 3 requirements (excluding LCP) unless otherwise noted. The Department reserves the right to sample and test the composite aggregate for any of the following propertie s at any time: 7-10 TABLE 3: Aggregate Consensus Properties Criteria Estimated Traffic, Million 18 kip ESALs AASHTO T 335 Coarse Aggregate Angularity (minimum) AASHTO T 304 Method A Uncompacted Void Content of Fine Aggregate (minimum)** ASTM D 4791 (8.4) Flat and Elongated Particles (maximum) AASHTO T 176 Clay Content/ Sand Equivalent (minimum) AASHTO T 327 Coarse Micro-Deval (maximum) < 3.0 75/60 40 10 45 18.0%* 3.0 to < 10 90/80 45 50 10 95/90 18.0% * In the event the material e xceeds the Micro-Deval limit, a W ashington Degradation test shall be performed. The material shall be acceptable if it has a value of 30 or mor e as determined by Was hington State DOT Test Method T 113, Method of Test for Determination of Degradation V alue except that the reported degradation value will be the result of testing a single composite specimen from that portion of the sample that passes the ½ inch sieve and is retained on the No. 10 sieve. ** Property will be evaluated on a mix design basis by calcula ting a weighted average based upon individual aggregate values (weighted average by the percentage proportion of the aggregate within the design). ASTM D 5821 - “90/80” denotes that 90 percent of the coarse agg regate has one fractured face and 80 percent has two fractured faces. AASHTO T 304 - Criteria are presented as percent air voids in l oosely compacted fine aggregate, (U). ASTM D 4791 - Criteria are presented as maximum percent by weig ht of flat and elongated particles (5:1 ratio). The entire HMA wearing course shall come from the same source o f material and the same job mix formula, except when permission is obtained from t he Department to change sources.
703.09 HMA Mixture Composition The coarse and fine aggregate shall meet the
requirements of Section 703.07. The several aggregate fraction s for mixtures shall be sized, graded, and combined in such proportions that the resulting com posite blends, including RAP aggregate will meet the grading requirements of the following t able: