addendum

Addendum to the MOC General Specification – Part 1

ADDENDUM TO THE MOC NOVEMBER 1998 GENERALSPECIFICATIONS

PART ONE

GENERAL


SECTION 1.09 SUPERVISION STAFF FACILITIES

1.09.5 Project Laboratory

1.09.5.5 Testing Equipment, Test and Specifications

Add the following:

Contractor shall furnish the following Superpave Quality Control Test equipment as part of the Project Laboratory.

Asphalt Content Ignition FurnaceNuclear Density Gauge (Thin Layer)Programmable Rotational Viscometer

1.09.5.5.1 Equipment Specifications for Superpave Asphalt Content Ignition Furnace

1.09.5.5.1.1 General

The Asphalt Content Ignition Furnace shall rapidly determine asphalt content without the use of solvents and allowing the determination of the aggregate gradation. It shall also include an accurate weighing system to continuously measure the weight loss of the bituminous mixture during combustion and automatically display the percent asphalt content.

1.09.5.5.1.2 Asphalt Content Ignition Furnace Specifications

Performance

Sample size 3500 gramsScale readout resolution : + 0 GramsPrecision at 6% AC for 1250 grams: + 0.06%Test Time: 30 to 45 minutes

Electrical

Power source: 08/240 VAC, 50/60 HzPeak power consumption: 6400/8500 wattAmps: 31/36Heat up time: 25 to 550 °C in 25 minFurnace operating temperature: 25 to 800°CAfter burner temperature: above 900°CPlug: NEMA 6-50 P

Software

Data Storage: Up to 300 test results/correction factorsPositive or negative aggregate correction factorProgrammable weight loss limit for measurementInterface: RS-232 for data transfer to computer or printerBaud Rate: 600 to 9600 BaudAutomatic startup and shut down timer

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Mechanical

Width Depth Height

OutsideDimensions 61 cm (24 in.) 81 cm (32 in.) 92.25 cm (37.5 in)ChamberDimensions 30.5 cm (12 in.) 45.7 cm (18 in.) 30.5 cm (12 in.)Weight: 94.12 kg (208 lbs)

1.09.5.5.1.3 Standard Accessory Equipment

One set of 3 sample trays Printer One pair of high temperature insulated gloves One face shield One sample heat protection cage One sample cool down tray Data collection and storage console One sample carrying fixture 10 ft. (4” diameter) metal exhaust pipe

1.09.5.5.2 Equipment Specifications for a Nuclear Testing Gauge (Thin Layer)

1.09.5.5.2.1 General

The Nuclear Testing Gauge shall provide fast and efficient measurement of the in place density of aggregates and asphalt pavements including thin layer asphalt overlays in accordance with ASTM Test Methods D2922, D3017 and D2950.

1.09.5.5.2.2 Detailed Equipment Specifications

Detailed equipment specifications can be obtained from the MOC materials and Research Department.

1.09.5.5.3 Equipment Specifications for Programmable Rotational Viscometer

1.09.5.5.3.1 Background

A rotational viscometer is used to determine the apparent viscosity of asphalts at various elevated temperatures other than those used for viscosity measurements in ASTM D4402. The specimen test temperature must be closely controlled and monitored and can be achieved through the use of a thermosel device.

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1.09.5.5.3.4 General Requirements

The rotational viscometer must function as a stand-alone device and also have the capability of being controlled and operated remotely through the use of a computer. The rotational viscometer shall be able to perform the testing as required in AASHTO TP48 and include the following functions and capabilities:

1. A built-in microprocessor for test data storage and analysis.2. Built-in user friendly programming3. Test data display to include – spindle number, RPM, specimen temperature,

viscosity, shear rate, and sear stress.4. Included computer interface and software (IBM PC compatible).5. Test specimen temperature control and monitoring system.

1.09.5.5.3.3 Software and Other Programmable Rotation Viscometer Specifications

Operating software to control rotational viscometer and thermosel, collect and store test data, perform data analysis from any IBM or compatible computer via RS232 serial port.

Provide a clear and simple, operating and instruction manual for software, viscometer, and temperature controller equipment.

SUBSET EQUIPMENT QUANTITIES WHICH TOGETHER COMPRISE ONE COMPLETE PROGRAMMABLE ROTATIONAL VISCOMETER SYSTEM

Description of Subsets Quantities

Rotational Viscometer, Programmable EachBase with Power Supply EachLaboratory Stand EachSignal Output Cable EachCarrying Case EachProgrammable Temperature Controller (Thermosel) EachSample Chamber EachOperating Software EachSpindles – (Required do determine viscosity from 20 mPaS to 500,000 mPaS) Sets

1.09.5,5.3.4 Detailed Programmable Rotational Viscometer Equipment Specifications

Detailed equipment specifications can be obtained from the MOC Materials and Research Department.

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