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California <br /> Tests Test Requirements <br /> Loss in Los Angeles Rattler(after 500 211 45%max. <br /> revolutions <br /> Cleanness Value <br /> Operating Range 227 75 min. <br /> Contract Compliance 227 71 min. <br /> • In lieu of the above Cleanness Value requirements,a Cleanness Value"Operating Range"limit of 71,minimum,and <br /> a Cleanness Value "Contract Compliance" limit of 68, minimum, will be used to determine the acceptability of the coarse <br /> aggregate if the Contractor furnishes a Certificate of Compliance, as provided in Section 6-1.07, "Certificates of <br /> Compliance,"certifying that: <br /> A. Coarse aggregate sampled at the completion of processing at the aggregate production plant had a Cleanness Value <br /> of not less than 82 when tested in conformance with the requirements in California Test 227;and <br /> B. Prequalification tests performed in conformance with the requirements in California Test 549 indicated that the <br /> aggregate would develop a relative strength of not less than 95 percent and would have a relative shrinkage not <br /> greater than 105 percent,based on concrete. <br /> 90-2.02B FINE AGGREGATE <br /> • Fine aggregate shall consist of natural sand, manufactured sand produced from larger aggregate or a combination <br /> thereof. Manufactured sand shall be well graded. <br /> • Fine aggregate shall conform to the following quality requirements: <br /> California <br /> Test Test Requirements <br /> Organic Impurities 213 Satisfactory' <br /> Mortar Strengths Relative to Ottawa Sand 515 95% min. <br /> Sand Equivalent: <br /> Operating Range 217 75,min. <br /> Contract Compliance 217 71 min. <br /> a Fine aggregate developing a color darker than the reference standard color <br /> solution may be accepted if it is determined by the Engineer,from mortar <br /> strength tests,that a darker color is acceptable. <br /> • In lieu of the above Sand Equivalent requirements,a Sand Equivalent"Operating Range"limit of 71,minimum,and <br /> a Sand Equivalent "Contract Compliance" limit of 68, minimum, will be used to determine the acceptability of the fine <br /> aggregate if the Contractor furnishes a Certificate of Compliance, as provided in Section 6-1.07, "Certificates of <br /> Compliance,"certifying that: <br /> A. Fine aggregate sampled at the completion of processing at the aggregate production plant had a Sand Equivalent <br /> value of not less than 82 when tested by California Test 217;and <br /> B. Prequalification tests performed in conformance with California Test 549 indicated that the aggregate would <br /> develop a relative strength of not less than 95 percent and would have a relative shrinkage not greater than <br /> 105 percent,based on concrete. <br /> 90-2.03 WATER <br /> • In conventionally reinforced concrete work, the water for curing, for washing aggregates, and for mixing shall be <br /> free from oil and shall not contain more than 1000 parts per million of chlorides as Cl, when tested in conformance with <br /> California Test 422, nor more than 1300 parts per million of sulfates as SO4, when tested in conformance with California <br /> Test 417. In prestressed concrete work,the water for curing, for washing aggregates, and for mixing shall be free from oil <br /> and shall not contain more than 650 parts per million of chlorides as Cl, when tested in conformance with California <br /> Test 422,nor more than 1300 parts per million of sulfates as SO4,when tested in conformance with California Test 417. In <br /> no case shall the water contain an amount of impurities that will cause either: 1) a change in the setting time of cement of <br /> more than 25 percent when tested in conformance with the requirements in ASTM Designation: C 191 or ASTM <br /> Designation: C 266 or 2)a reduction in the compressive strength of mortar at 14 days of more than 5 percent,when tested in <br /> Contract No. 10-OM7104 <br /> 74 <br />