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HMA PLANT MONITOR CHECKLIST

3 Asphalt binder has correct anti-strip additive and dosage, if required 4 QM-A Technician performing moisture tests on RAM products: 5 QM-A Technician providing daily dry RAM totalizer quantities 6 Plant scales, gate settings checked/monitored: 7 Aggregate Stockpiles free of contamination, segregation, degradation


The Institute, 1974 - Asphalt - 160 pages 0 Reviews Plant inspectors, engineers and asphalt plant operators will find that proper use of this manual's tenets assures production of asphalt mixtures meeting the high standards required for modern construction.


a) Plant Random Scale Checks Random weighting of trucks for checking scales should be a minimum of once per day. Should questions come up, the District Engineer of Tests can check scales as often as necessary to solve the problem. Should truck and plant scales be outside +/-1%, the first such load of mix is allowed to be placed.


Apr 20, 2021· 1.) AC Temperature in Operating Range. Prior to starting calibration, make sure your Asphalt Cement's temperature is in proper range.The flow characteristics change for AC at different temperatures, having the viscosity of your AC in proper range is very important.If your AC is not within operational temperature range during your calibration tests, you will not get …


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CHAP11 - NCDOT

18 Check blank indicating that combined moisture content test data for aggregate is attached. (Drum Plant Only.) 19. Check blank indicating that evidence of actual cold feed calibration, at time of mix verification, is attached. 20. Check blank indicating that batch plant scales check/calibration (aggregate and asphalt) is current within


Jun 04, 2021· See Batch Plants. Asphalt Scales (Sec 404.3.4) The asphalt scales at a batch plant are calibrated using the same procedure as the aggregate scales. However, the total check load only needs to exceed the working load by 50 …


a) Plant Random Scale Checks (6/27/05) Random weighting of trucks for checking scales should be a minimum of once per day. Should questions come up, the District Engineer of Tests can check scales as often as necessary to solve the problem. Should truck and plant scales be outside +/-1%, the first such load of mix is allowed to be placed.


asphalt binder scales that conform to Subsection 401.02.02 B). When metering the quantity of asphalt binder, check the delivery of the meter by actual weight. For drum mixing plants, calibrate the asphalt binder delivery system and metering device in the presence of the Engineer before starting production at the


Dec 28, 2017· Aggregate scale capacities will generally govern the minimum amount of test weights required – about 4000 lbs is typically needed. (There may be situations where the plant configuration does not permit the minimum test weights to be used and that has to be verified by the plant inspector).


ATT-17, Part II 3.4 Calibration of Asphalt System 3.4 Calibration of Asphalt System The calibration of the asphalt system of a dual belt scale plant is similar to a single belt scale plant. The weight per revolution or unit volume is determined and then the asphalt content is checked by diverting asphalt back to the storage tank.


Accu-Track Advantage™ Plant Control Capabilities. The Accu-Track Advantage™ software has been developed with both the plant personnel and office management in mind. Some of the control capabilities of the system are: Asphalt Pumps – 2, with separate metering and blending capabilitiesFillers – 4, with volumetric or weigh depletion control.


Calibration of Batch Plant Asphalt Scales, Weigh Bridges & Meters 6-14 Aggregate Scales & Weigh Bridges 6-14 Asphalt Binder Scales 6-14 ... QA Quartering (Aggregates, RAP and RAS) 7-30 Test Procedures – General 7-31 Sieve Analysis of Fine and Coarse Aggregates 7-32 Moisture Content of Aggregate by Drying 7-36 ...


Scales may be calibrated by a certified scale company. Check weighing may be used to validate the calibration. Equipment that needs to be calibrated may include these items. 1. Cold Aggregate Bins. 2. RAM Bins. 3. Conveyor Scales. 4. Asphalt Pump/ inline flow meter. 5. Hot Aggregate Bins on Batch Plants. 6. Batch Plant Scales. 7. Initial Plant ...


ARPA plant certification 4. Plant scale and metering device calibration B. Materials Test Reports 1. Report on Coarse Aggregate 2. Report on Fine Aggregate 3. Asphalt Concrete Mix Design, include the following items in the report: a. Name and address of laboratory and responsible party b. Location of source of aggregate


ATT-17/96 PLANT CALIBRATION Part I Drum Mix Asphalt ... Data Sheets: Drum Plant Aggregate Calibration MAT 6-38 Drum Plant Asphalt Calibration MAT 6-39 3.0 PROCEDURE 3.1 General 3.1.1 Drum Mix Plants The drum mix system consists of a proportionally controlled cold feed system which feeds onto an inclined conveyor that uses a belt scale to determine …


3.2 HMA – Hot Mix Asphalt –Mixture of asphalt binder (Cement) and aggregate, which is produced at an elevated temperature (generally between 300-350°F) in an asphalt plant. 3.3 Inspector – An ALDOT employee/representative that is certified by ALDOT as aa n Asphalt Level 1 Laboratory Technician.


When using recycled HMA, check with the agency for specific correction procedures. Binder in the HMA is ignited in a furnace. Asphalt binder content is calculated as the difference between the initial mass of the HMA and the mass of the residual aggregate, correction factor, and moisture content. The asphalt binder content is expressed as ...


Coarse Aggregate Gradation (XLSX) Fine Aggregate Gradtion (XLSX) Rap Burnoff (XLSX) ... Scale Check Batch Plant. Scale Check (XLSX) Drum Plant. Agg-Rap Belt (XLSX) Asphalt Calibration Tank (XLSX) Asphalt Truck Scale (XLSX) Governor's Goals. Government that Works. Help keep people safe in their communities and on Pennsylvania's roads. Government ...


Aggregate ODOT Form Number Description 734-1792 Field Worksheet for Aggregate 734-1793 B Nuclear Compaction Report For Base Aggregate 734-1825 Unit Weight and Specific Gravity W/S 734-1825 C Bulk Density "Unit Weight" Measure Calibration 734-3468 B Maximum Density of Aggregate Base Material Asphalt Concrete Pavement (ACP)


operation. Refer to the Weights aggregate only check-run, and Measures Handbook for change the input aggregate more data on delivery tickets. moisture by a nominal amount 2. Dynamic testing of continuous (say 3 %) and note the appropriate change to the mixing type plant proportioning indicated aggregate delivery rate.


PRODUCTION RATE & PLANT CHECK, Part IV, Drum Mix Recycle Asphalt Plant: ATT 16/04. ASPHALT RUBBER BLENDING EQUIPMENT, PRODUCTION RATE and PLANT CHECK, Part V, Drum Mix / Asphalt Rubber Plant: ATT 17/96. PLANT CALIBRATION, Part I, Drum Mix Asphalt Plants: ATT 17/96. PLANT CALIBRATION, Part II, Centre Feed Recycle Drum Mix …


should provide rapid feedback of the consistency of the aggregate. • For continuous mix plants, asphalt contents of HMA mixtures can be monitored with the readings from the plant's asphalt meter and belt scales. Calibration of the components used to determine real-time asphalt content is a key to the reliability of this data.


R 76 Reducing Samples of Aggregate to Testing Size . T 2 Sampling of Aggregates . T 11 Materials Finer Than 75-µm (No. 200) Sieve in Mineral ... 2.5.9 Annual calibration of HMA plant scales and verification of meters . ... revisions for HMA Plant major components, Level 1 Asphalt Technicians, Certified Asphalt Technicians, and movement of the ...


weighing aggregate with asphalt, one can determine if both scales are working correctly or if only one is a problem. Remember, the accuracy of the aggregate weigh scale and the asphalt weigh scale both affect AC content accuracy. Also, with a batch plant the asphalt cement is introduced into the pugmill down an asphalt


The belt scale should be inspected and calibrated (go through the calibration process to verify proper function prior to startup). An accurate belt scale results in a quality mix. Finally, check all electrical switches, i.e. limit switches and e-stop cable pulls for proper function.


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Daily Paving Worksheets

Aggregate Moisture Test 1 = 3.70% Aggregate Moisture Test 2 = 3.10% Aggregate Moisture Test 3 = Aggregate Moisture Test 4 = DISTRIBUTION: PROJECT RECORDS INSPECTOR'S SIGNATURE DATE PROJECT SCHEDULED HOURS CONTRACTOR TARGET AC CONTENT TARGET AGGR. % 0.496 2006 5.58% 0.683 914 100.00% 1024.5 100.00% 2244.0 …


Belt Scales. Use belt scales for proportioning aggregate that are accurate to within 1.0% based on the average of 3 test runs, where no individual test run exceeds 2.0% when checked in accordance with Tex-920-K. 2.5. Asphalt Material Meter. Provide an asphalt material meter with an automatic digital display of the volume or weight of asphalt ...


Calibration points are verification readings taken at individual flow rates for each aggregate type and each feeder used in the asphalt production process. These points are used to determine the most optimal belt speed for the aggregate at a given flow rate on a …


Nuclear Density/Moisture Gauge Calibration and Effect of Hot Substrate 304 . 2017 Calculating the Moving Average Maximum Density (MAMD) 305 2015 : Performing A Control Strip for ACP Pavement 306 . 2019 : Asphalt Content of Bituminous Mixtures by Plant Recordation 321 . 2015 Asphalt Plant Calibration Procedure 322 2018


the Ohio Department of Agriculture. Equip the plant with one 50-pound (20 kg) test weight for each 400 pounds (200 kg) of the maximum batch weight with a minimum of ten test weights. Provide a truck scale or recording batch plant scales for the purpose of obtaining the net weight of each load of asphalt mixture as required in 401.21. Use truck ...


This calibration can be performed during the plant production to ensure that the lab is set up to accurately measure the asphalt content as soon as full scale production begins. At any time during the project, changes in aggregate sources or significant changes in the mix volumetrics may require that a new test section be constructed.


CALIBRATING AND CHECKING COLD-FEED FLOW ON ASPHALT MIXING PLANTS 1. SCOPE: 1.1. This test method describes the procedure for calibrating the cold-feed flow from the cold-aggregate storage bins at an asphalt mixing plant. Use this procedure when determining the percentage of polish-resistant aggregate in various wearing course applications. 1.2.