or his representative along with and at the time of delivery of the initial shipment of fortified bituminous material to the project, and thereafter with the subsequent shipments when ordered by the Engineer, a one quart sealed sample of the bituminous material taken at time of loading at the refinery and prior to introduction of the additive, along with a separate one pint sample of the antistripping additive involved. 702.05 Application Temperatures. Bituminous materials for the several applications indicated in the specifications shall be applied within the temperature ranges indicated in table 702-1. Table 702-1 shall apply unless temperature ranges applicable to specific lots of material delivered to the job are supplied by the producer. 702.06 Material for Dampproofing and Waterproofing Concrete and Masonry Surfaces. Material shall conform to the requirements of the following specifications: (d) Asphalt for mop coat. (e) Waterproofing fabric. AASHTO M 115 Fabric shall be waterproofed with tar or asphalt, in agreement with the material ... ASTM D-1668. (f) Mortar materials shall conform to subsection 705.05 except that the mortar shall be (g) Asphalt plank. Asphalt plank shall conform to the requirements of AASHTO M 46 ASTM D 224, 65 pound grade. 702.07 Membrane material for waterproofing bridge decks. Bridge deck waterproofing membrane shall be mesh-reinforced self-sealing rubberized asphalt performed membrane and shall have the following properties: Primer and mastic shall be as recommended by the manufacturer and shall be compatible with the membrane. 702.08 Tars. Tars shall conform to the requirements of AASHTO M 52. 702.09 Dust Oils. Dust oils and clarified dust oil shall conform to the following requirements: *As modified in procedure identified as "Test Method for Determination of Asphaltene and Saturate Content of Dust Oils" by Materials Testing Laboratory, Region 1, USDA Forest Service, Missoula, MT dated November 1970. Copies of the procedure are available from the Regional Materials Engineer, Region 1, USDA Forest Service, Missoula, MT, 59801. **Except that the residue remaining after a temperature of 550°F. (instead of 680°F.) shall be used for further testing. As modified in procedure identified as "Standard Method of Test for Distillation of Forest Service Dust Oil” dated July 1971. Copies of the procedure are available from the Regional Materials Engineer, Region 1, USDA Forest Service, Missoula, MT, 59801. ***Trichlorethylene shall be used as a solvent instead of carbon disulfide. Section 703.-AGGREGATES 703.01 Fine Aggregate for Concrete and Incidentals. (a) Concrete.-Fine aggregate for concrete shall conform to the requirements of AASHTO M 6, with no deleterious substances in excess of the following percentages: Other substances-as shown in the special provisions. Lightweight aggregate, if required or permitted by the special provisions, shall meet the pertinent requirements of AASHTO M 195. (b) Granular backfill filter material for underdrains and filler for paved waterways shall be permeable and shall meet the requirements of AASHTO M 6, except that soundness tests will not be required and minor variations in grading and content of deleterious substances may be approved by the Engineer. (c) Aggregate for minor concrete structures shall be clean, durable, uniformly graded sand and gravel, crushed slag, or crushed stone, 100 percent of which will pass a 11⁄2-inch sieve and containing not more than 5 percent passing the No. 200 sieve. 703.02 Coarse Aggregate for Portland Cement Concrete. Coarse aggregate for concrete shall meet the requirements of AASHTO M 80 except that gradation shall conform to table 703-1, for the sizes applicable to the specified classes of concrete. Where the nominal top size of coarse aggregate is 1 inch or less, the requirements for separation into two sizes may be waived. Lightweight aggregate, if required or permitted by the special provisions, shall conform to the requirements of AASHTO M 195, for the grading specified. 703.05 Aggregate for Portland Cement Treated Base Course. The crushed or uncrushed granular material shall consist of hard, durable stones and rocks, of accepted quality, free from an excess of flat, elongated soft or disintigrated pieces or other objectionable matter. The method used in obtaining the aggregate shall be such that the finished product shall be as consistent as practical. All materials passing the No. 4 mesh sieve produced in the crushing operation of either the stone or gravel shall be incorporated in the base material to the extent permitted by the gradation requirements. The plasticity index shall be not less than 4 or more than 10. TABLE 703-1 Requirements for grading of coarse aggregate for portland cement concrete Gradations of each designated size of aggregates shall be obtained by crushing, screening, and blending processes as may be necessary and shall be in conformity to the percentages shown in the following table: *Maximum size of aggregate is 1 in. when used as subbase course under Portland Cement Concrete Pavement 703.06 Aggregate for Untreated Base or Surface Courses. Aggregates shall consist of hard, durable particles or fragments of crushed stone, crushed slag, or crushed or natural gravel. Materials that break up when alternately frozen and thawed or wetted and dried shall not be used. Coarse aggregate is the material retained on the Number 10 sieve and shall have a percentage of wear of not more than 50 as determined by AASHTO method T96. Fine aggregate is the material passing the Number 10 sieve and shall consist of natural or crushed sand and fine mineral particles. The fraction passing the Number 200 sieve shall not be greater than two-thirds of the fraction passing the Number 40 sieve. For subbase and base courses, the fraction passing the Number 40 sieve shall have a liquid limit not greater than 25 and a plasticity index not greater than 6. For surface courses, the fraction passing the number 40 sieve shall have a liquid limit not greater than 35 and a plasticity index not less than 4 or greater than 9. All material shall be free from vegetable matter and lumps or balls of clay. When crushed aggregate is specified, not less than 50 percent by weight of the particles retained on the No. 4 sieve shall have at least one fractured face. Aggregate gradation shall conform to the requirements of Table 703-3 for the designation shown in the bid schedule. Gradations of each designated size of aggregates shall be obtained by crushing, screening, and blending processes as may be necessary. Materials otherwise meeting the requirements of this subsection, will be acceptable whenever such materials produce a compacted course meeting density requirements as specified in subsection 304.08. TABLE 703-3 Gradation Target Values for Aggregate Subbase, Base or Surface Courses 703.07 Aggregate for Bituminous Concrete.-General. (a) Coarse aggregate.—Coarse aggregate (retained on the No. 8 sieve) shall be crushed stone, crushed slag, or crushed or natural gravel, and, unless otherwise stipulated, shall conform to the quality requirements of AASHTO M 79.-1974. When crushed gravel is used, it shall also meet the pertinent requirements of Section 2.1 and 3.1 of AASHTO M 62-1974 and not less than 50 percent by weight of the particles retained on the No. 4 sieve shall have at least one fractured face. The coarse aggregate shall be of such gradation that when combined with other required aggregate fractions in proper proportion the resultant mixture will meet the gradation required under the composition of mixture for the specific type under contract. Only one kind shall be used on the project except by permission of the Engineer. (b) Fine aggregate.-Fine aggregate (passing the No. 8 sieve) shall consist of natural sand, stone screenings, or slag screenings, or a combination thereof, and unless otherwise stipulated shall conform to the quality requirements of AASHTO M 29 (ASTM D 1073). Fine aggregate shall be of such gradation that when combined with other required aggregate fractions in proper proportion, the resultant mixture will meet the gradation required under the composition of mixture for the specific type under contract. (c) Open-Graded Asphalt Concrete Friction Course. Aggregate shall conform to paragraph (a) and (b) above and the following requirements. Relatively pure carbonate aggregates or any aggregates known to polish shall not be used for the coarse aggregate fraction (material retained on the No. 8 sieve). In addition, the coarse aggregate fraction shall have at least 75 percent of weight of particles with at least two fractured faces and 90 percent with one or more fractured faces, except that lightweight aggregates need not meet this requirement. The abrasion loss (AASHTO T 96) shall not exceed 40 percent. (d) Lightweight aggregate (except slag), if required or permitted by the special provisions, shall be manufactured by the rotary kiln process. The material shall consist of angular fragments uniform in density and reasonably free from flat, elongated or other deleterious substances. The material shall show an abrasion loss of less than 45 percent when tested in accordance with AASHTO T 96. The dry weight per cubic foot shall not exceed 67 pounds. After testing through 5 cycles of the magnesium sulfate soundness test the loss shall not exceed 10 percent. 703.08 Aggregate for Bituminous Plant Mix Surfacing. Aggregates shall be uniformly graded from coarse to fine. Target values for the intermediate sieve sizes shall be established within the limits shown in Table No. 703-4A. Allowable deviations from the established target values are stipulated in Table 703–3. The Contractor shall submit the proposed target values in writing to the Engineer for approval. The target gradation is subject to confirmation testing in accordance with Subsection 417.02 before approval by the Engineer. Any changes in the target gradation are subject to confirmation testing in accordance with Subsection 417.02, unless otherwise approved in writing by the Engineer. No target gradation adjustment will be permitted during the span of a lot. |