DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

B. Job-Mix Formula: Before producing bituminous mixture, submit a job-mix formula for eachmixture to the Contracting Officer for approval. Should a change in source of material beproposed, or should a job-mix formula prove unsatisfactory, submit a new job-mix formula forapproval. Each job-mix formula submitted shall include the following information:1. The percentage of aggregate passing each specified sieve, based on dry weight of aggregate(California Tests 202 and 105).2. Test results on the combined aggregate including the Los Angeles rattler test (CaliforniaTest 211), percentage of crushed coarse aggregate (California Test 205), and SandEquivalent test (California Test 217).3. The percentage of bituminous material to be added, based on the total weight of themixture.4. The percentage of any stabilizing agent such as lime, portland cement, or antistrip agent.5. Test results on the bituminous concrete mixture for Swell, Moisture Vapor Susceptibility,and Stabilometer Value. The testing shall be according to California Test 367.C. Samples: Asphalt cement, 1-quart minimum sample for each load delivered.D. Certificates:1. Certification from supplier to the Contracting Officer that the asphalt cement is of correcttype and meets requirements of this section. Two copies will be required for each load.2. Two copies of certified weight tickets for each load of bituminous concrete.1 .5 PROJECT CONDITIONSA. Apply mixture only during hours of daylight; when air temperature is 50 degrees F or higher;when surfaces to be paved are dry and free of frost, snow, or ice; and when precipitation is notimminent.PART 2 PRODUCTS2 .1 AGGREGATE BASE COURSEA. Section 02725.2 .2 AGGREGATEA. The aggregate shall meet the general and physical requirements of CalTrans Section 39, StandardSpecifications, Type A, 3/4-inch maximum, coarse grading. When crushed gravel is used, aminimum of 50 percent of the material passing the No. 4 sieve shall have at least one fracturedface. In the table below, the symbol “X” is the gradation which the Contractor proposes to furnishfor the specific sieve. The proposed gradation shall meet the gradation shown in the table under“Limits of Proposed Gradation”.12/97 02743-2ASPHALT CONCRETE PAVEMENT