4101.01  GENERAL REQUIREMENTS.

A. ASTM C 150 Cements.
Unless otherwise specified, Portland cement shall meet the requirements of ASTM C 150.

The alkali content expressed as total equivalent sodium oxide shall not be more than 0.60% for all cements.

B. ASTM C 595 Cements.
Unless otherwise specified, blended hydraulic cement shall meet requirements of ASTM C 595 and the following requirements:

1. The pozzolan constituent of Type IP cement shall not be more than 25 weight (mass) percent of the Portland-pozzolan cement.

2. The slag constituent of Type IS cement shall not be more than 35 weight (mass) percent of the Portland blast-furnace slag cement.

3. Type IP cement shall not contain Class C fly ash.

4. The Portland cement used to produce the blended cement shall meet the requirements of Article 4101.01, Paragraph A, except the alkali content expressed as total equivalent sodium oxide shall not be more than 0.75%.

C. Cement Type Usage.
Unless otherwise specified, cement type and usage in various pavements, structures, and other elements shall be as follows:

1. Type I or Type II cement may be used for pavements, structures, and other applications. Type III cement may be used in precast and prestressed concrete only.

2. Type IP or Type IS cement may be furnished at the Contractor's option when Type I or Type II cement is specified. The limitations of Articles 2301.04, 2403.03, or 2412.02 shall apply.

3. The unit volume of Type IP or Type IS cement in the concrete shall be that specified for Type I or Type II cement, unless otherwise specified.

Cement which contains 5.0% or more of lumps retained on a No. 20 (850 µm) sieve will be rejected. Cement which contains less than 1.0% of lumps may be used without adjustment in the batch. For each 1.0% or fraction thereof from 1.0% to 5.0% of lumps found by test, batch weights (mass) of cement used in either concrete pavement or structural concrete shall be increased by 2.0% of the original value.

Air entrainment of the concrete is to be accomplished by the addition, at the time of mixing, of an approved air entraining admixture specified in Section 4103. Air entraining cement shall not be used.

4101.02 ACCEPTANCE AND INSPECTION.
Portland cement shall be manufactured, inspected, tested, accepted, and used in accordance with Materials I.M. 401.

4101.03 LIMITATIONS.
Cement that has been stored at the site of the work or in local warehouses for more than 60 calendar days, or cement that has been stored in the producer's silo for more than one year, will be retested for lumps before being used.