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SALT Schedule of Materials Control - Local Government Agency <br />CONCRETE PAVEMENT - PRODUCER / CONTRACTOR 1 of 2* <br />Test Type <br />(concrete manual) <br />Gradation (1) <br />(5-694.145) <br />(5-694.148) <br />Spec. <br />Concrete Paving Batch Plant <br />Production Testing <br />When over 250 yd3 produced per day: 1 <br />3126 per 1500 yd3, or completed 1 per 1/2 <br />3137 day, whichever is the higher sampling <br />rate. <br />Coarse Aggregate <br />-200 sieve 3137 <br />(5-694.146) <br />Aggregate Moisture <br />QC Verification (2) <br />(5-694.142) <br />Water Content, <br />Microwave Oven <br />Verification <br />Unit Weight QC <br />Air Content QC <br />(5-694.541) <br />Coarse and Fine <br />Aggregate Quality <br />Coarse Aggregate <br />Quality Testing for <br />Incentive / <br />Disincentive <br />Aggregate Size <br />3/4" Plus, #4 <br />3/4" Minus, #67 <br />#7, CA-70 <br />CA-80, #89 <br />Fine Aggregate <br />3126 <br />3137 <br />Review <br />Concrete <br />Manual <br />Certified Ready -Mix Plant <br />Production Testing <br />When over 20 yd3 produced per day: 1 <br />per 400 yd3, or completed every 4 <br />hours, whichever is the higher sampling <br />rate. <br />Test the first sample then at least 1 of the next 3 samples on the first day of <br />production and each time the Contractor mobilizes the plant, changes the <br />aggregate sources, or the cleanliness of the coarse aggregate is in question, <br />then 1 per day randomly thereafter. Test these samples at the plant. <br />If w/c incentives do not apply: 1 per <br />1000 yd3, or 1 completed every 4 hours, <br />whichever is the higher sampling rate. <br />If w/c incentives do not apply: 1 <br />completed every 4 hours. <br />If w/c incentives apply: Obtain <br />the plastic concrete sample at the plant. See Concrete Manual (5-694.532) <br />Test one load of concrete per day at the plant. See Concrete Manual (5-694.542) <br />Test the first load of concrete at the plant <br />Prior to concrete production: Test the Agency's pre -production sample at the <br />3126 Contractor's discretion. During concrete production: Test the -200 on the quality <br />3137 companion sample the day it was sampled. All other testing is at the Contractor's <br />discretion. <br />3137 Test at the Contractor's discretion. <br />Minimum Aggregate Sample Size *companion required, double sample size <br />Gradation* <br />25 Ib. <br />25 Ib. <br />6 Ib. <br />1.1 Ib. (500 g) <br />1.1 Ib. (500 g) <br />Quality* <br />50 Ib. <br />30 Ib. <br />30 Ib. <br />30 Ib. <br />30 Ib. <br />Moisture <br />2000 g <br />2000 g <br />2000 g <br />500 g <br />500 g <br />-200 C.Agg <br />10 Ib. <br />6 Ib. <br />6 Ib. <br />* Use Certified Ready -Mix Concrete testing rates when: a) The entire concrete paving project is less than 3,500 <br />cu.yd. b) When a secondary plant is used to provide minor work. <br />NOTE (1): Performing testing on representative material at the end of the most recent day of production is <br />allowed. If well -graded aggregate incentives apply: Use the Contractor's gradation results for well -graded <br />aggregate incentive calculations as verified by Agency testing. <br />NOTE (2): Complete the initial moisture content and adjust the batch water prior to the start of concrete <br />production each day. If weather conditions allow, performing moisture testing on representative material at the <br />end of production the prior evening is allowed. <br />Contact the MnDOT District IA Inspector to provide servicing of your Federal Aid Project. <br />2017 <br />