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<br />~
<br />
<br />.
<br />
<br />..,
<br />. maximum time limit between the batching and when the concrete of each batch is
<br />deposited during the production.
<br />-, Upon the review and verification of the laboratory trial batch,
<br />. field demonstration test data, inspection reports and contractor's certification statement,
<br />the Department will approve the proposed mix design.
<br />,., The Department may approve proposed flowing concrete
<br />. mixes, centrally mixed at the placement site, without the production of demonstration
<br />batches, provided that the proposed mix meets the following two criteria:
<br />,., (1) A previously approved flowing concrete mix of the same
<br />. class has demonstrated satisfactory performance under the proposed job placing conditions
<br />with a minimum of fifteen consecutive Department acceptance tests, which met all plastic
<br />,..., and hardened concrete test requirements.
<br />. (2) The cementitious materials and chemical admixtures,
<br />including the flowing concrete HRWR admixture, used in the proposed mix are the same
<br />,.., materials from the same source used in the previously approved mix, (1) above, and the
<br />. other materials and mix proportions are approved as similar by the Department.
<br />Do not produce or place concrete until the design mixes have
<br />.., been approved.
<br />. 346-2.5.4 Corrosion Inhibitor Admixture: Use only with concrete containing
<br />Type II cement, Class F fly ash or slag, and a water reducing retardant admixture, Type D,
<br />r"1 or High Range Water Reducer admixture, Type G, to normalize the setting time of
<br />. concrete. Ensure that all admixtures are compatible with the corrosion inhibitor admixture.
<br />
<br />,..., 346-3 Classification, Strength, Slump and Air Content.
<br />I 346-3.1 General: The separate classifications of concrete covered by this Section
<br />are designated as Class I, Class II, Class III, Class IV, Class V and Class VI. Strength,
<br />.., slump, and air content of each class are specified in Table 2:
<br />
<br />.
<br />
<br />,..,
<br />
<br />TABLE 2
<br /> Specified Minimum Target Slump Air Content Range
<br />Class of Concrete Strength (28-day) (psi)
<br /> [(MPa)] (inches) [(mm)](c) (e) (%)
<br />STRUCTURAL CONCRETE
<br />I (Pavement) 3,000 [21] 2 [50] 1 to 6
<br />I (Special) (a) 3,000[21] 3 [75] (b) 1 to 6
<br />II (a) 3,400 [23] 3 [75] (b) 1 to 6
<br />II (Bridge Deck) 4,500[31] 3 [75] (b) 1 to 6
<br />III 5,000 [35] 3 [75] (b) 1 to 6
<br />III (Seal) 3,000 [21] 8 [200] 1 to 6
<br />IV 5,500 [38] 3 [75] (b) 1 to 6
<br />IV (Drilled Shaft) 4,000 [28] 8 [200] o to 6
<br />V (Special) 6,000 [41] 3 [75] (b) (d) 1 to 5
<br />V 6,500 [45] 3 [75] (b) (d) 1 to 5
<br />VI 8,500 [59] 3 [75] (b) (d) 1 to 5
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<br />
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<br />.
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<br />.
<br />
<br />,.,
<br />
<br />.
<br />
<br />"
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<br />
<br />M
<br />
<br />09/09
<br />
<br />01000-92
<br />
<br />03-4122.F
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