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3. If Section 90-1.01, "Description," specifies a maximum cementitious material content in kilograms per cubic <br /> meter, the total mass of portland cement and silica fume per cubic.-meter shall not exceed the specified <br /> maximum cementitious material content. <br /> D. If GGBFS is used: <br /> 1. The minimum amount of GGBFS shall be either: <br /> a. Forty percent of the total cementitious material to be used, if the aggregates used in the concrete <br /> are on the Department's list of"Approved Aggregates For Use in Concrete with Reduced Fly <br /> Ash." <br /> b. No less than 50 percent. <br /> 2. The amount of GGBFS shall not exceed 60 percent by mass of the total amount of cementitious materials to be <br /> used. <br /> 90-2.02 AGGREGATES <br /> • Aggregates shall be free from deleterious coatings,clay balls,roots,bark,sticks,rags,and other extraneous material. <br /> • The Contractor shall provide safe and suitable facilities, including necessary splitting devices for obtaining samples <br /> of aggregates,in conformance with California Test 125. <br /> • Aggregates shall be of such character that it will be possible to produce workable concrete within the limits of water <br /> content provided in Section 90-6.06,"Amount of Water and Penetration." <br /> • Aggregates shall have not more than 10 percent loss when tested for soundness in conformance with the <br /> requirements in California Test 214. The soundness requirement for fine aggregate will be waived, provided that the <br /> durability index,Df,of the fine aggregate is 60 or greater when tested for durability in conformance with California Test 229. <br /> • If the results of any one or more of the Cleanness Value, Sand Equivalent,or aggregate grading tests do not meet the <br /> requirements specified for "Operating Range" but all meet the "Contract Compliance" requirements, the placement of <br /> concrete shall be suspended at the completion of the current pour until tests or other information indicate that the next <br /> material to be used in the work will comply with the requirements specified for"Operating Range." <br /> • If the results of either or both the Cleanness Value and coarse aggregate grading tests do not meet the requirements <br /> specified for"Contract Compliance,"the concrete that is represented by the tests shall be removed. However, if the Engineer <br /> determines that the concrete is structurally adequate, the concrete may remain in place, and the Contractor shall pay to the <br /> State $4.60 per cubic meter for paving concrete and$7.20 per cubic meter for all other concrete for the concrete represented <br /> by these tests and left in place. The Department may deduct the amount from any moneys due, or that may become due,the <br /> Contractor under the contract. <br /> • If the results of either or both the Sand Equivalent and fine aggregate grading tests do not meet the requirements <br /> specified for"Contract Compliance,"the concrete that is represented by the tests shall be removed. However,if the Engineer <br /> determines that the concrete is structurally adequate, the concrete may remain in place and the Contractor shall pay to the <br /> State $4.60 per cubic meter for paving concrete and$7.20 per cubic meter for all other concrete for the concrete represented <br /> by these tests and left in place. The Department may deduct the amount from any moneys due,or that may become due,the <br /> Contractor under the contract. <br /> • The 2 preceding paragraphs apply individually to the "Contract Compliance"requirements for coarse aggregate and <br /> fine aggregate. When both coarse aggregate and fine aggregate do not conform to the "Contract Compliance"requirements, <br /> both paragraphs shall apply. The payments specified in those paragraphs are in addition to any payments made in <br /> conformance with the provisions in Section 90-1.01, "Description." <br /> • No single Cleanness Value, Sand Equivalent,or aggregate grading test shall represent more than 250 m3 of concrete <br /> or one day's pour,whichever is smaller. <br /> • When the source of an aggregate is changed,the Contractor shall adjust the mix proportions and submit in writing to <br /> the Engineer a copy of the mix design before using the aggregates. <br /> 90-2.02A COARSE AGGREGATE <br /> • Coarse aggregate shall consist of gravel, crushed gravel, crushed rock,reclaimed aggregate, crushed air-cooled iron <br /> blast furnace slag or combinations thereof. Crushed air-cooled blast furnace slag shall not be used in reinforced or <br /> prestressed concrete. <br /> • Reclaimed aggregate is aggregate that has been recovered from plastic concrete by washing away the cementitious <br /> material. Reclaimed aggregate shall conform to all aggregate requirements. <br /> • Coarse aggregate shall conform to the following quality requirements: <br /> Contract No. l O-OM7104 <br /> 73 <br />