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CHAPTER 10

AUTOMATED DATA PROCESSING

OF CONCRETEThe purpose of the data system for which these instructions were prepared is to

provide descriptive information about the materials used in highway work. Independent Assurance and concrete control tests shall be handled under the conventional method and using conventional forms.

Basically, the system is designed for coding test reports. For instance, in lieu of recording the Contractor�s name and location, only a code is needed. The printout will show the Contractor�s name and location. Code sheets have been included in this chapter for class purposes only. A complete list of codes may be obtained from the District Materials Section.

It is very important that all data entered on the Data Processing Forms be correct, in the proper blanks, and, most of all legible. Attached you will ! nd a coding guide to be used for numeric and alphabetic characters. As a rule, numeric characters are recorded from the right to left, and alphabetic from the left to right. Please adhere to these standards.

Form TL-28A Coding Form - Concrete Batch ReportThe Hydraulic Cement Concrete Coding Form TL-28A contains three (3) records,

A, B, and C. The plant record, A and B, is completed by the Producer�s Technician, and the site record, C, is completed by the Project Inspector. The TL-28A is to accompany the ! rst load of concrete delivered to the project. The load should not be tested or accepted until the TL-28A is received.

Under the job heading (Column 2), the Producer�s Technician chooses a numerical (1-9) or alphabetical (A-Z) code for each day beginning with 1 or A, and then changes only if any item in A or B record changes (ex. yards3/meter3 or pounds/kg of free water changes). If all the loads are identical, then the Producer�s Technician would ! ll in the A & B record only once. The Project Inspector would continue recording the project data in record C, until he receives another TL-28A coding form from the Producer�s Technician. The time batched would have to be shown on the producer�s ticket. On the next day, the Technician should restart with 1 or A. The codes that are needed for completing record C are attached. On record A the water is in pounds (kilograms), and on record B the water is in gallons (liters).

If the plant is a central-mix plant, mark an �X� in Section B, Column 71. If the plant is a ready-mix plant, leave Section B, Column 71 blank. The Producer�s Technician signs the TL-28A coding form in the upper right corner.

Always record from the right to left. For miscellaneous concrete, the TL-28A will not be required unless cylinders are cast. If cylinders are cast, it will be required to obtain information that is not included on Forms TL-13 or TL-26A. Independent Assurance samples are not to be recorded on the TL-28A.

The remaining spaces on the form are self-explanatory.

The Project Inspector submits the TL-28A to the District Materials Section for review and data entry. The District Materials Of! ce retains the original and the Project Inspector retains a copy.

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TL-13 Notice of Shipment of Concrete CylindersThe TL-13 is to be ! lled out by the person molding the cylinders and it shall be

submitted with each cluster of acceptance cylinders. Under the cylinder column, the cylinder number should be the same as shown on the TL-28A, (ex. if it is listed in the 1st column, the last 2 spaces on the TL-28A, list it the same way on the TL-13). Mark the sample number, project number, class of concrete and date cast on the cylinders. The District Materials Of! ce will pick up the cylinders.

Form TL-26A - Report of Structural ConcreteForm TL-26A is to be ! lled in by the District Materials Section to record the

compressive strengths of the cylinders.

The District Materials Of! ce retains the original and the Project Inspector retains a copy. The Project Inspector sends a copy to the Contractor if a sample fails.

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CODE LIST FOR CURING METHODS

CODE NO. METHOD 1 Liquid Membrane Seal 2 Polyethylene Sheeting 3 Burlap 4 Burlene 5 Wet Sand 6 Water Ponding 7 Steam 8 Heater Blanket

CODE LIST FOR TYPE OF STRUCTURE

CODE NO. TYPE STRUCTURE

1 Box Culvert and/or Appurtenances 2 Bridge (except deck) 3 Bridge Deck 4 Parapet Wall 5 Approach Slab 6 Retaining Wall 7 Curb and Gutter 8 Slope Paving 9 Ditch Paving 10 Sidewalk 11 Precast Piling 12 Precast Beams 13 Precast Miscellaneous 14 Sidewalk or Driveway 15 Miscellaneous 16 Pier Stem 17 Paving 18 Tunnel

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NOTES FOR MATERIALS DIVISION PERSONNEL CODES NOT ON MASTER CODE LIST CONCRETE CLASSIFICATIONS

CONCLASS CODE NUMERIC EQUIVALENTA3 1 1A4 2 2A5 3 3B2 4 4C1 5 5T3 6 6SPECIAL 7 7PAVEMENT 8 8A4 TUNNL 9 9B2 TUNNL A 10E1 TUNNL B 11Y TUNNL C 12A3 FLYASH D 13A4 FLYASH E 14A5 FLYASH F 15B2 FLYASH G 16C1 FLYASH H 17T3 FLYASH I 18SPECFA J 19PAVEFA K 20A 4000 L 21A 4000F (FLYASH) M 22 * N 23 * O 24A3SLAG P 25A4SLAG Q 26A5SLAG R 27B2SLAG S 28C1SLAG T 29T3SLAG U 30SPECSG V 31PAVSG W 32A6 X 33A 4000S (SLAG) Y 34 * Z 35

CEMENT CLASSIFICATIONS

CEMENT NUMERIC EQUIVALENT I 1 II 2III 3 IP 4 V 5III MODIFIED 6

* CODES RESERVED FOR FUTURE USE

FOR STUDY GUIDE PURPOSES ONLY. TO OBTAIN AN UP TO DATE LIST, PLEASE CONTACT YOUR DISTRICT MATERIALS OFFICE.

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CEMENT SOURCE

TABLE CODE NAME CITY STATECEMB 1 COPLAY LIME KILN MDCEMB 2 BLUE CIRCLE ATLANTIC INC. RAVENA NYCEMB 3 BLUE CIRCLE ATLANTIC INC. VALENCIA SPCEMB 4 ATLANTIC CHESAPEAKE VACEMB 5 ATLANTIC BALTIMORE MDCEMB 6 ROANOKE CEMENT CO. CLOVERDALE VACEMB 7 TARMAC-LONESTAR INC. CHESAPEAKE VACEMB 8 COPLAY NAZARATH PACEMB 9 IDEAL CASTLE NAYNES NCCEMB 10 LEHIGH PORTLAND CEMENT CO. UNIONBRIDGE MDCEMB 11 LEHIGH PORTLAND CEMENT CO. ALLENTOWN PACEMB 12 CAPITAL MARTINSBURG WVCEMB 13 MARQUETTE HAGERSTOWN MDCEMB 14 MEDUSA YORK PACEMB 15 DIXIE KNOXVILLE TNCEMB 16 SANTEE HOLLY HILL SCCEMB 17 UNIVERSAL ATLAS BAHAMAS GBCEMB 18 LEHIGH PORTLAND CEMENT CO. LEEDS ALCEMB 19 INDEPENDENT CEMENT CORP. NAZARATH MILL PACEMB 20 GIFFORD HILL HARLEYVILLE SCCEMB 21 ALLENTOWN CEMENT CO. EVANSVILLE PACEMB 22 IDEAL KNOXVILLE TNCEMB 23 TARMAC HAGERSTOWN MDCEMB 24 LEHIGH VENEZULAN PERTIGALETE VZCEMB 25 INDEPENDENT CEMENT CORP. HAGERSTOWN MDCEMB 26 TARMAC ASLAND SPCEMB 27 BLUE CIRCLE ATLANTIC INC. SAGUNTO SPCEMB 28 TARMAC PERTIGALETE VZCEMB 29 TARMAC MILAKI GRCEMB 30 TARMAC ELEFSU GRCEMB 31 TITAN S.A. GRCEMB 32 HORNOS IBERICOS ALBA ALMERIA SPCEMB 33 CEMENTOS APCOSCO SA VERACUZ MXCEMB 34 LEHIGH-TAMPICO CEMENT CO. AMPARO PAULA MXCEMB 35 TARMAC VENEZOLANA DE CEMENTOS PERTIGALETE VZCEMB 36 ALLENTOWN CEMENT CO. EVANSVILLE PACEMB 37 INDEPENDENT CEMENT BEAUPORT CACEMB 38 COPLAY CEMENT CO. FREDERICK MDCEMB 39 LEHIGH PORTLAND CEMENT CO. NORFOLK VACEMB 40 HERCULES CEMENT CO. STOCKERTOWN MDCEMB 41 KOSMOS CEMENT CO. LOUISVILLE KYCEMB 42 INDEPENDENT CEMENT CORP. BALTIMORE MDCEMB 43 BLUE CIRCLE ATLANTIC INC. KAMARI GRCEMB 44 BLUE CIRCLE ATLANTIC INC. ORIZABA MXCEMB 45 BLUE CIRCLE ATLANTIC BARRANQUILLA COLUMBIA SACEMB 46 BLUE CIRCLE ATLANTIC BARQUISIMETO VENEZUELA SACEMB 47 BLUE CIRCLE ATLANTIC INC. ALCANCA SPCEMB 48 BLUE CIRCLE ATLANTIC CARTAGENA COLUMBIA SACEMB 49 BLUE CIRCLE ATLANTIC PERTIGALETE VENEZUELA SACEMB 50 LEHIGH PORTLAND CEMENT CO. MITCHELL INCEMB 51 COPLAY SPEED INCEMB 52 GIANT CEMENT CO. HARLEYVILLE SC

THIS IS A CODE LIST FOR INPUT DATA ONLY. CHECK WITH YOUR DISTRICT MATERIALS ENGINEER FOR AN APPROVED LIST OF SOURCES.

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Concrete Plant Example Problem

It is the producer technician�s responsibility to complete Lines A and B of the TL-28A coding form at the plant and send the form out to the state construction project site with the driver of the ! rst load of concrete going to the project.

Using the information below and using Mix Design No. 4-7501-07 (see next page), ! ll in Lines A and B (upper portion) of the TL-28A coding form.

The contractor on project 0295-127-101,C501 orders 2 cubic yards of A-3 general concrete from B. M. Jones Ready Mix Plant in Richmond (Plant Code No. 4006) on January 12, 2007.

The cement is coming from Roanoke Cement Company in Cloverdale, VA. The producer code for Bedrock S&G is 4009 and for Smith Quarries is 4015. The code for MBAE Air Entraining Agent is 02.

The free moisture on the sand is 5% and on the Coarse Aggregate (No. 57) is 0.6%.

There were 70 mixing revolutions put on the mixer at the plant and 1 gallon of water per cubic yard was withheld.

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Calculations for Plant Example Problem

Cement Weight Calculation - Line A 38-41588 lbs. (From TL-27) x 2 cubic yards = 1176 lbs. of cement for 2 cubic yards

Sand, SSD Weight Calculation - Line A 46-501228 lbs. (From TL-27) x 2 cubic yards = 2456 lbs. of sand for 2 cubic yards

Sand, Free Water Calculation - Line A 51-532456 lbs. of sand (Line A 46-50) x .05 (% Free Moisture in Sand expressed as a decimal) = 122.8 (Rounded to nearest whole pound) = 123 lbs.

Coarse Aggregate (No.57), SSD Weight Calculation - Line A 60-641725 lbs. (From TL-27) x 2 cubic yards = 3450 lbs. of Coarse Aggregate for 2 cubic yards

Coarse Aggregate (No. 57), Free Water Calculation - Line A 65-673450 lbs. of C.A. (Line A 60-64) x .006 (% Free Moisture in C.A. expressed as a decimal) = 20.7 (Rounded to nearest whole pound) = 21 lbs.

Total Allowable Water - Line B 13-1633 gals. (From TL-27) x 2 cubic yards = 66.0 gallons

Water Added at Plant - Line B 20-23123 lbs. of free water in sand + 21 lbs. of free water in C.A. = 144 lbs.144 lbs. of free water in sand and C.A. ¸ 8.33 weight of one gallon of water in lbs. = 17.3 gals.1 gallon of water per cubic yard withheld at plant x 2 cubic yards = 2 gals. of water withheld66.0 gallons (Line B 13-16) � 19.3 gallons of free and withheld water = 46.7 gallons of water added at plant

A. E. Admixture - Line B 31-344.6 oz. (TL-27) x 2 cubic yards = 9.2 oz. of Air Entrained Admixture for 2 cubic yards

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Concrete Field Example Problem

Using the information below, ! ll in Line C (lower portion) of the TL-28A Coding Form and the Notice of Shipment of Concrete Cylinders Form TL-13.

The contractor on Project 0295-127-101,C501 has ordered 8 cubic yards of A-3 General concrete from B. M. Jones Ready Mix (Plant Code No. 4006) to be placed in a paved ditch. This is Load No. 1 batched at 2:00 p.m. on Truck No. 306.

When this load of concrete arrived on the project, the project inspector took the TL-28A from the mixer driver in order to ! ll out Line C on the form.

The mix was dry so the contractor told the mixer driver to add 4 gallons of water to the load and put 25 additional mixing revolutions on the drum.

The inspector took the temperature of the concrete and determined it to be 72°F. The inspector checked the slump by the slump cone method and found the slump to be 3.50 inches. The entrained air content was checked using a Type A Air Meter (Protex Air Meter) and was found to be 6.5%. This load met VDOT speci! cations and was accepted. The contractor began discharge at 2:45 p.m.

The average air temperature during pouring was 75°F.

Design Quality Control Cylinders were cast by the inspector at 2:55 p.m. and were numbered 1, 1A and 1B. The cylinders were placed in a curing box for 24 hours. The low ! eld storage temperature was 65°F and the high ! eld storage temperature was 75°F.

The paved ditch was cured using polyethylene sheeting.

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Chapter 10

Study Problems

Concrete Plant Study Problem

Using the information below and the TL-27 Mix Design on the next page, ! ll in lines A & B (upper portion) of the TL-28A Coding Form.

The contractor on project U000-106-101,C501 is going to place 80 cubic yards of A-4, Retarded Concrete, in a bridge deck on August 18, 2007. This project is under Standard (English) Speci! cations.

The concrete will be supplied by Capitol Ready Mix and will be furnished by means of ten, 8 cubic yard loads.

The concrete will be batched from Mix Design No. 4-2905-07 (attached) and this will be Job No. 1.

The plant code for Capitol Ready Mix is (4119). The code for Gray Cement is (10). The Producer Code for Hilltop S&G is (4001) and for Bluestone Quarry is (4007). The code for Air 20 Air Entraining Agent is (06) and for Slo-Go Retarder is (03).

The free moisture on the sand is 6.0% and on the 57 Aggregate is 0.2%.

There were 70 mixing revolutions put on the loads at the plant and 1 gallon of water per cubic yard held out of each load.

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Concrete Field Study Problem

Using the information below, ! ll in Line C of the TL-28A Coding Form and the TL-13 Form.

A subcontractor on Project U000-106-101,C501 orders 8 cubic yards of A3 general concrete from Capitol Ready Mix (VDOT Plant Code No. 4119) on June 23, 2007. This concrete will be placed in a sidewalk. This load is Load No. 1, batched at 12:30 p.m. on Truck No. 135.

The mix had dried up some in transit, so the contractor told the mixer driver to add 4 gallons of water to the load. 25 additional revolutions were put on the drum.

The load was then turned over to the VDOT inspector for testing. The temperature of the concrete was 78°F. The slump was 4.00 inches. Using a Type B Air Meter, the entrained air content was found to be 5.5%. These test results met VDOT speci! cation requirements for this class of concrete, so discharge of this load began at 1:15 p.m.

Design Quality Control Cylinders were cast by the inspector at 1:20 p.m. The inspector numbered these cylinders 6, 6A and 6B. The cylinders were then placed in a curing box for 24 hours. The low ! eld storage temperature was 70°F and the high ! eld storage temperature was 76°F.

The average air temperature during pouring was 66°F.

This sidewalk was cured using polyethylene sheeting.

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