306.01 Description. To assure that the material used meets the
requirements of the specifications, certain tests f or quality control and acceptance will be performed as specified herei n. The properties for which quality control and acceptance testing will be performed are gradation, density, moisture content, plasticity index, and thickness as specified in each Section.
306.02 Quality Control. The Department will furnish the
Contractor with the maximum laboratory density and optimum moisture content for the material being used. The maximum laboratory density shall be determined as follows: % Retained - #4 (4.75 mm) Sieve Test Method 10 Max. AASHTO T 99, Method A 11 - 30 AASHTO T 99, Method C 31 Min. AASHTO T 180, Method D Note: Instead of AASHTO T 224, correction for coarse particles retained on the 3/4" (19.0 mm) sieve shal l be determined by replacing with an equal mass of mater ial passing 202 the 3/4" (19.0 mm) sieve and retained on the #4 (4. 75 mm) sieve. The in-place density shall be determined by using A ASHTO T 310, Direct Transmission. The moisture content s hall be determined by AASHTO T 310 or AHTD Test Method 347 or 348. A new maximum laboratory density and optimum moistu re will be determined whenever the Engineer deems necessary or upon evidence provided by the Contractor. The Contractor shall furnish all personnel, equipme nt, and facilities necessary to perform the required sampli ng and testing. The Contractor's facilities shall be separate from any Field Laboratory and/or Field Office furnished under the Contract. The Contractor shall provide the Engineer with the oppo rtunity to observe all quality control sampling and testing. Quality control sampling and testing by the Contractor shall be per formed in a qualified laboratory by a certified technician. Re quirements for technician certification and laboratory qualificati on are contained in the Department’s Manual of Field Sampling and Testing Procedures . Test reports shall be signed and copies made availa ble to the Engineer if requested. If the result of any test shows that the required m inimum density has not been obtained, corrective action shall be t aken, followed by a re-test at the same location. The original and r e-test reports shall be cross referenced. All corrective actions shall be performed by the Contractor at no cost to the Department. Tests for gradation, liquid limit, and plasticity i ndex shall be performed by AASHTO T 11, T 27, T 89, and T 90. Although no minimum frequency of quality control te sting is specified, the Contractor will be required to perfo rm acceptance tests as specified in Subsection 306.03.
306.03 Acceptance Testing. Acceptance testing for thickness
(when specified on the plans), gradation, plasticit y index, density, and moisture content by the Contractor will be base d on lots. The size of standard lots will be 1000 tons (1000 metri c tons). Partial lots, of any size, may be established by the Engine er at any time. Test methods for acceptance shall be the same as sp ecified for quality control testing. Acceptance sampling and t esting by the Contractor shall be performed in a qualified labora tory by a certified technician. Requirements for technician certificat ion and laboratory 203 qualification are contained in the Department’s Manual of Field Sampling and Testing Procedures. The item of work being tested shall not be considered complete or accepted until passing test reports are submitted to the Engineer. The Contractor shall take one test for all properti es in each lot or partial lot at a location randomly selected by the Engineer under AHTD Test Method 465. If the material being furnished is crushed stone an d the results of the first five tests for plasticity index (PI) show that the material is non-plastic, further tests for PL, LL, and PI may b e waived by the Engineer. If a change in material occurs, testing for PI will be resumed. If the new material is crushed stone and the results of the first five tests for PI show that the material is n on-plastic, further tests for PL, LL, and PI may again be waived by the Engineer. In addition to the required acceptance tests, the E ngineer may require the Contractor to test any location that, b y visual observation, appears to be defective. The Contractor’s acceptance sampling and testing pr ocedures, equipment, and results will be subject to independe nt assurance sampling and testing conducted by the Department. Independent assurance sampling and testing will be conducted at the frequencies indicated in the Department’s Manual of Field Sampling and Testing Procedures . The Contractor shall be required to make changes to the equipment and/or procedures used if the results of the independent assurance tests do not correlate with t he Contractor’s test results. All acceptance testing performed by the Contractor shall be subject to observation by Department personnel. Al l test reports shall be signed and submitted to the Engineer by th e next business day after the tests are performed. The Department will obtain and test a minimum of on e sample, taken at the frequency established in the Departmen t’s Manual of Field Sampling and Testing Procedures, for verification testing in accordance with Subsection 106.11.
306.04 Acceptance. Each lot will be accepted as described
herein.
a.Gradation and Plasticity Index. (1) Roadway Sa mpled Material. If a lot or a partial lot fails gradation requireme nts, the 204 Contractor shall remove and replace that lot or par tial lot with acceptable material at no cost to the Department. Tests will be performed on the replacement material as required f or the original material. Acceptance of the replacement material w ill be the same as for the original material, based on the results of tests on the replacement material. Payment for the quantity in the original lot will be withheld or recovered, and released after t he removal and replacement has been acceptably performed. In lieu of removal and replacement of work rejected for gradation, the Contractor may request permission to attempt corrective actions and/or evaluation under Section 105.04. The Engineer will consider the request and will make a determination whether the requested corrective action and/or eval uation is in the best interest of the Department. This determinatio n by the Engineer shall be final. In making this determination, the Engineer will consider the type of work involved; the corrective action proposed, the magnitude of the deviation; and any other facto rs deemed applicable to the work involved. If a lot or partial lot is rejected for PI, the Con tractor may request permission to attempt corrective action. The Engin eer will consider the request and make a determination whether the pr oposed corrective action may be attempted; evaluate the ma terial under Section 105; or require removal and replacement of the material. Corrective action or removal and replacement shall be performed by the Contractor at no cost to the Department. When the material is non-plastic and tests for PI h ave been waived as specified in Subsection 306.03, the mater ial will be accepted for PI without additional testing.
2.Stockpile Sampled Material. Material used in mixes shall be sampled from the stockpile, tested, and accepted before being incorporated into the work. Stockpiled material fo und not to be in compliance with the specifications shall be replace d with acceptable material.
b.Density. When a density requirement is specified, the resu lts of all tests shall be at or above the minimum requi red density and the moisture content should be at or near the optim um. If the result of any test does not meet these requirements, corre ctive action shall be taken and a re-test will be taken at the same lo cation. All 205 corrective action shall be taken by the Contractor at no cost to the Department.
306.05 Measurement and Payment. All work required under
this subsection will not be paid for separately, bu t full compensation therefor will be considered included in the contrac t unit prices bid for the item in which the material is being used.
Source: , Edition.