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a. Fine Aggregate <br />• Percent by Weight Test Method <br />r- Clay Lumps 0.25 AASHTO T112 <br />Shale, mica, coated <br />grains, soft or flaky <br />particles 1.00 AASHTO T150 <br />r Injurious amounts of <br />Material passing #200 <br />sieve by washing 3.00• AASHTO T27 <br />'When this material is dust of fracture, essentially free from <br />clay or shale, percentage may be increased to 5.00. <br />b. Coarse Aggregate <br />Percent by Weight Test Method <br />~- Soft Fragments 2.00 AASHTO T189 <br />~ Coal and Lignite 0.25 AASHTO Ti13 <br />Clay lumps 0.15 AASHTO T112 <br />Material passing #200 <br />sieve by washing 1.00' AASHTO Tll <br />_ •W hen this material is dust of fracture, percentage may be <br />increased to 1.50. <br />C. Cement <br />• 1. Only one brand of each type of cement shall be used for the exposed <br />concrete in any individual structure. <br />2. Cement reclaimed from cleaning bags or leaking containers shall not <br />- be used. <br />3. Cement shall be used in the sequence of shipments received unless <br />_, otherwise directed by the Engineer. <br />- 4. Portland cement shall conform to the requirements of ASTM C150, <br />Type II. <br />-. D. Admixtures <br />-- 1. Air-entraining admixtures shall conform to Specifications for Air- <br />Entraining Admixtures for Concrete, ASTM C260. <br />2. Water reducing (densifier) admixtures shall conform to ASTM C494, <br />Type A. <br />3. All admixtures shall be approved in writing by the Engineer prior to <br />- use. <br />E. Curing Materials <br />• 1. Kraft Paper <br />Kraft paper shall conform to the requirements of Federal Specifi- <br />cation UU-P-264. <br />1 <br />03300-3 <br />