The Thermo Scientific NCAT Asphalt Content Furnace.doc
DOC document 32 KB Posted
- Attached to
- NCAT Asphalt Content Furnace
- Solicitation number
- RFQ - 18P - 08052700000000000840
- Issued by
- Kennebec County, Maine
About this file
This is a product specification document for the Thermo Scientific NCAT Asphalt Content Furnace, a laboratory testing system developed in conjunction with the National Center for Asphalt Technology (NCAT) for the State of Maine. The furnace is designed to determine asphalt content in bituminous paving mixtures using the ignition method and was integral to the development of ASTM D6307 and AASHTO T308 standards. The system accommodates samples up to 5,000 grams and provides asphalt content accuracy within 0.11%, with results validated through a 12-laboratory round-robin field test conducted exclusively by NCAT. The furnace operates in either automatic or manual test mode, with automatic endpoint detection and software-controlled operations that print results and unlock the door upon completion. Testing capacity for larger samples reduces the number of daily samples required, thereby lowering labor and operational costs.
The furnace incorporates advanced safety features including an automatic door lock during critical testing phases, a high-temperature afterburner with patented ceramic filtration that reduces emissions by up to 95%, and has been verified to meet EPA parameters through independent laboratory testing conducted with the California Transportation Department. Software compensation automatically adjusts for sample and basket assembly temperature changes, accepts positive or negative correction factors for mixes containing hydrated lime, and detects endpoint stability within 0.01% of sample weight. The system includes a 24-hour, 7-day programmable timer for furnace preheating, an RS-232 port for data interface with personal computers for graphical analysis, and adjustable endpoint sensitivity ranging from 0.01% to 0.5%. Independent OSHA-compliant laboratory hygiene studies confirmed the system poses no health threats during proper operation and eliminates exposure to harmful solvents associated with traditional asphalt content testing methods.
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| Conditions and Instructions to Bidders.doc | DOC document |
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Text version
The Thermo Scientific NCAT Asphalt Content Furnace, developed in conjunction with the National Center for Asphalt Technology (NCAT), set the industry standard for determining asphalt content by the ignition method. This system was integral to the drafting and passage of ASTM D6307 and AASHTO T308.
Product Detail
Whether you are involved in research, quality assurance or quality control, the Thermo Scientific NCAT Asphalt Content Furnace provides you with a fast, accurate, environmentally-friendly and cost-effective method of determining asphalt content to aid in the manufacture of a consistent, high quality, economical asphalt product.
A 12 lab round robin field test was conducted by NCAT exclusively with this furnace. Results and proven performance are documented by NCAT.
· Asphalt content of bituminous paving mixtures is accurate to 0.11%.
· Samples up to 5000 grams are accommodated. Testing larger samples reduces the total samples needed for testing each day, reducing labor and costs.
Safety
You are not exposed to harmful solvents.
Automatic door-lock prevents door opening during the critical test time, protecting you and ensuring test integrity.
High temperature afterburner is used with a patented ceramic filter to reduce ignition process emissions by up to 95%.
Independent laboratory study, conducted with the California Transportation Department in accordance with California EPA guidelines, showed emissions from the furnace during the ignition test were within EPA parameters. A laboratory hygiene study, conducted in accordance with OSHA guidelines, proved the system poses no health threats during proper use.
The System
Furnace software allows a choice of automatic or manual test mode.
Automatic mode: endpoint is detected and the software ends the test, prints the results and beeps. It continues to beep until you press Stop to unlock the door (in accordance with AMRL specifications).
Manual mode: endpoint is detected and the furnace begins to beep but continues to test until you press Stop to end it. After you press Stop, the door unlocks and results print.
Furnace software automatically compensates for weight change due to sample and basket assembly temperature change. Compensation is computed for each sample load tested (i.e, a fixed number is not assigned to a given range of load sizes).
Positive or negative correction factors are accepted for use with mixes containing hydrated lime.
Endpoint within 0.01% of the sample weight is automtically detected. Sample stability is reached once the endpoint criterion is met for three consecutive minutes during the test. Endpoint sensitivity is adjustable from 0.01% to 0.5%.
Software computes test results as calibrated asphalt content per total weight of HMA sample or bitumen ratio per weight of dry aggregate.
24 hour/7 day timer can be programmed to preheat the furnace before you arrive.
RS-232 port provides data interface with a PC for graphical data analysis.
File details come from the government source that posted it. Updated .