for Highway Construction Page 617 of 715 SECTION 700 – MATERIALS for Highway Construction Page 618 of 71 5 SECTION 701 – CEMENT S
701.01 General Requirements.
Provide cement as specified. Portland Cement .................................................................................. AASHTO M 85 Type I, II, or III Blended Hydraulic Cement ....................................................... AASHTO M 240 Type IP, IL, IT, or IS
A.Portland Cement Portland Cement Type I (General Purpose), Type II (Moderate Sulfate Resistance), or Type III (High Ear ly Strength) according to AASHTO M85 . Obtain approval before using Type III cement other than for precast stringers. Use the product of only 1 batch plant or other brand and type of portland cement in a single structure component (e.g., abutments, columns, stringers, deck ). The Contractor may use limestone additions of up to 5.0 percent by mass of cement, provided the chemical and physical requirements of the finished cement meet AASHTO M85. Use naturally occurring limestone, consisting of at least 70 percent by mass of 1 or more of the mineral forms of calcium carbonate (C aCO 3). Include the C aCO 3 content of the limestone, the carbon dioxide (CO 2) content, and calculated limestone content of the cement in the manufacturer’s mill test report. Calculate the limestone content in portland cement in accordance with ASTM C150 and tested in accordance with ASTM C114.
B.Blended Hydraulic Cement Blended Hydraulic Cement per AASHTO M240 (ASTM C595), Type IP( ≤40) (portland -pozzolan cement), IL(≤10) (portland- limestone cement), Type IT (ternary blended cement), or Type IS( ≤20) (Portland blast - furnace slag cement). Maximum cont ent of limestone may vary by 2.5 percent , the maximum all owed variation in AASHTO M240 . For IL( ≤10), use naturally occurring limestone , consisting of at least 70 percent by mass of 1 or more of the mineral forms of calcium carbonate (CaCO3). Include the CaCO3 content of the limestone, the carbon dioxide (CO2) content, and calculated limestone content of the cement in the manufacturer’s mill test report. Calculate the limestone content in blended hydraulic cement in accordance with ASTM C595 and tested in accordance with ASTM C114 (AASHTO T105).
701.02 Acceptance Requirements.
The Engineer will accept cement materials for use based on the manufacturer’s certification as specified in
106.04 and 106.05.
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Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 653–653 of 768. View official source ↗