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1 <br /> I1 9-20.1(3) Aggregate <br /> 2 Aggregate used to extend the patching mortar shall conform to Section 9-03.1(4) and <br /> 3Ibe AASHTO Grading No. 8. A Manufacturer's Certificate of Compliance shall be <br /> 4 submitted showing the aggregate source and the gradation. Mitigation for Alkali Silica <br /> 5 Reaction (ASR) will not be required for the extender aggregate used for concrete <br /> 6 patching material. <br /> I 7 <br /> 8 9-20.1(4) Water <br /> 9 Water shall meet the requirements of Section 9-25.1. The quantity of water shall be <br /> I10 within the limits recommended by the repair material manufacturer. <br /> 11 <br /> 12 9-20.2 Specifications <br /> I13 This section, including title, is revised to read: <br /> 14 <br /> 15 9-20.2 Patching Material for Concrete Structure Repair <br /> I 16 Concrete patching material shall be a prepackaged mixture of portland or blended hydraulic <br /> 17 cement, aggregate, and admixtures. Fly ash, ground granulated blast furnace slag and <br /> 18 microsilica fume may be used. The concrete patching material may be shrinkage <br /> I19 compensated. The concrete patching material shall also meet the following requirements: <br /> 20 <br /> 21 • Compressive strength of 6000 psi or higher at 28 days in accordance with <br /> I22 AASHTO T 22 (ASTM C 39), unless noted otherwise <br /> 23 <br /> 24 • Bond strength of 250 psi or higher at 28 days or less in accordance with ASTM C <br /> 25 1583 or ICRI 210.3R r <br /> I26 <br /> 27 • Shrinkage shall be 0.05 percent (500 microstrain) or lower at 28 days in <br /> 28 accordance with AASHTO T 160 (ASTM C 157) as modified by ICRI 320.3R <br /> I29 <br /> 30 • Permeability shall be 2,000 coulombs or lower at 28 days in accordance with <br /> 31 AASHTO T 277 (ASTM C 1202) <br /> I32 <br /> 33 • Freeze-thaw resistance shall have a durability factor of 90 percent or higher after <br /> 34 a minimum of 300 cycles in accordance with AASHTO T 161 Procedure A (ASTM <br /> I35 C 666) <br /> 36 <br /> 37 • Soluble chloride ion limits in Section 6-02.3(2) shall be satisfied <br /> I38 <br /> 39 9-20.2(1) Patching Mortar <br /> 40 This section, including title, is deleted in its entirety. <br /> 41 <br /> 42 9-20.2(2) Patching Mortar Extended with Aggregate <br /> 43 This section, including title, is deleted in its entirety. <br /> 44 <br /> I45 9-20.3(3) Grout Type 3 for Unconfined Bearing Pad Applications <br /> 46 This section is revised to read: <br /> 47 <br /> 48 Grout Type 3 shall be a prepackaged material that does not include expansive admixtures <br /> 49 meeting the following requirements: <br /> 50 <br /> City of Everett Page AM-101 Amendments <br /> Everett Downtown Streetscape Improvement March 22, 2019 <br />