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• <br /> 3. Coarse aggregate for exterior horizontal concrete shall be size number 67(3/4 inch to <br /> No.4)and shall be 100% crushed quarry rock composed of basalt,quartzite,granite, <br /> limestone or dolomite. <br /> 4. When subject to five cycles of soundness test using magnesium sulfate in accordance <br /> with ASTM C88,coarse aggregate shall have a loss of not more than 18%. <br /> 5. Coarse aggregate shall have a maximum abrasion loss of 40%of weight when tested <br /> in accordance with ASTM C131, Grading B. <br /> 6. Requirements of ASTM C33,Table 3,as to amount of material in coarse aggregate <br /> having specific gravity lighter than 2.4 shall include iron oxide. <br /> C. Water: Fresh, clean,potable,free from injurious amounts of oils,acids,alkalies,salts, <br /> organic materials,or other substances that may be deleterious to concrete or steel. <br /> D. Water Reducing Admixtures: ASTM C494,Type A. Add to concrete in strict accordance <br /> with the manufacturer's instructions. <br /> E. Air-Entraining Admixtures: ASTM C260. Where required air contents are specified,add <br /> in strict accordance with manufacturer's instructions. <br /> F. Calcium Chloride Admixture: Do not use. <br /> G. Reinforcement: Welded steel wire fabric,ASTM A185;dowels of plain steel bars <br /> conforming to AASHTO M31 or M42;tie bars deformed steel bars conforming to <br /> AASHTO M31 OR M42. <br /> H. Granular Borrow: As specified under Section 02200,Earthwork. <br /> I. Forms: Steel,wood,or other suitable material of size and strength to resist movement <br /> during concrete placement and to retain horizontal and vertical alignment until removal, <br /> matched,tight fitting and straight,free of distortion and defects. <br /> J. Crushed Aggregate Base: When indicated,crushed aggregate base shall be Class 5 <br /> gradation, 100%crushed,and meet MnDOT Spec. Section 3138. <br /> K. Polyurethane sealer as per ASTM C920,Type M or S,class 25,Grade P,polyurethane <br /> based,two part or one part sealout,self leveling. <br /> L. Truncated dome pavers when indicated on handicap ramps,shall be as per Americans <br /> with Disabilities Act design,as manufactured by Hastings Pavement Co.,NY,or <br /> approved equal. <br /> M. Expansion Joint Caps: Plastic joint cap to be utilized in expansion joints shall be Contie <br /> plastic joint cap as distributed by Brock White Company,MN. <br /> ADDENDUM#1 <br /> 1607.001 -ORONO ICE ARENA(CP-2) Page 02515 - 3 <br />