Scope This method describes the process for removal of a core sample of compacted hot mix asphalt (HMA) from a pavement for laboratory testing. Cores may range in diameter from 2 in. to 12 in. The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
Loose asphalt mix exposed to the solvent for binder extraction process: (a) loosening the preheated HMA pavement core, (b) mix after being loosened, (c) even distribution of asphalt mix, and (d) asphalt mix soaked in TCE.
3.2 A water supply (usually a plastic 35 – 55 gal drum) with sufficient hose to introduce the water into and through the spindle of the coring device by gravity feed. The drum should be white or light in color to minimize excessive thermal heating of the water (for coring of asphalt rubber cores see footnote 1).
To study the changes occurring in asphalt as it hardens in the hot-mix plant or roadway and to determine the asphalt content of cores and mixes, asphalt must be extracted from the ag gregate. This is done almost exclusively today by either the centrifuge or reflux procedure, usually as specified in ASTM D2172, Methods A and B.
February 28, 2019 Manual of Test Procedures for Materials 167 Illinois Modified Test Procedure Effective Date: June 1, 2012 Revised Date: February 28, 2019 Standard Method of Test for ... Extraction of Asphalt Binder from Asphalt Mixtures 3.2 Replace with the following: Constant mass – shall be defined as the mass at which further drying ...
The Abson method involves recovering benzene-extracted asphalt at 300°F to 325°F with the aid of bubbling carbon dioxide (C02). Abson tested seven asphalts ranging in pen etration from 175 to 26. After being mixed with benzene, the asphalts were recovered to within 3 percent of original pen etrations.
Modifying asphalt mixtures with recycled components is common practice due to their environmental and economic merits. However, due to the oxidized air-blown asphalt binders in recycled asphalt shingles (RAS) and aged binders in reclaimed asphalt pavement (RAP), adopting RAP and/or RAS as recycled components in asphalt mixtures influences the performance of the overall asphalt binder in these ...
equipment to extract asphalt binders from asphalt mixtures and recover the binder from solvent using an alternative procedure. The method for this procedure is AASHTO T 164, Method A, for the extraction process and AASHTO T 319, Quantitative Extraction and Recovery of Asphalt Binder from Asphalt Mixtures (AASHTO, 2012), for the recovery process.
Fill the reservoir with the recovered asphalt/solvent extract from the initial extraction process. Pre-dissolving this extract with additional solvent is permitted. Start the centrifuge and allow let it to reach a constant speed. Open the feed line valve. Set feed rate to 100 to 150mL per minute.
new apparatus and procedure for the purpose of extracting asphalt binder from hot-mix and pavement samples has been developed. This procedure is the culmination of previous reports on solvents for the extraction of asphalt, the aging of asphalt in solution, and the removal of solvent from asphalt. The apparatus consists of a rotary drum for the...
For separation and extraction of binder, filler and aggregates from asphalt samples by use of various solvents including TCE. Specifications: Maximum sample weight: 3.5 kg Centrifuge rotation speed: 7800 r.p.m. Max filler cap.: 300 g approx. Extraction time: 45 min. approx (including drying time) Solvent per extraction: 5 l approx.
The solvents used for the extraction must be adequately removed from the asphalt binder, so as not to disrort the physical properties of the binder that are subse quently measured. Problems have been reported with all a pe_ct of the asphalt extraction and reeovery process, mcludmg incomplete asphalt extraction, solvent hardening of the
asphalt testing: 1. Physical properties test results of recovered binders have much higher variability compared to unrecovered binders 2. The choice of procedure and solvent can have an impact on the resulting physical properties of the recovered asphalt binder 3. The effect of solvent extraction on polymer modified
2.1.3 Providing initial sample weight, sample weight loss, correction factor, corrected asphalt content (percent), and test time. 2.2 Tempered stainless steel No. 8 (2.36 mm) mesh basket, otherwise perforated basket, or combination of baskets. The basket must incorporate a design that confines the sample during testing.
May 15, 2020 Manual of Test Procedures for Materials 169 Illinois Modified Test Procedure Effective Date: June 1, 2012 Revised Date: May 15, 2020 Standard Method of Test for Quantitative Extraction of Asphalt Binder from Hot Mix Asphalt (HMA) Reference AASHTO T 164-14 (2018) (ASTM D 2172 / D 2172M-11) AASHTO Section Illinois Modification 13.
A literature review was conducted on the main aspects of asphalt binder extraction and recovery: i) extraction methods, ii) recovery methods and iii) solvents. The extraction methods include centrifuge, reflux and vacuum and others with particular focus on their effectiveness in dissolving the binder and the potential to modify it. Studies found that the centrifuge was a relatively safe cold ...
The first step for the asphalt binder QC/QA process is a precise and accurate extraction from the asphalt mix (3). Such an extraction process is significantly required for asphalt binder evaluation after exposing to the construction process and being in-service. Besides, due to the diminishment in the crude oil, recycled materials, and new ...
1.1 This method covers the extraction and recovery of asphalt binder from asphalt mixtures in order to perform various AASHTO asphalt binder tests. Safety Notice: Not only does this procedure involve temperatures in the range of 100 - 163°C, it also includes handling asphalt binder in this temperature range, as well as toxic solvents.
The asphalt mixture is placed inside the chamber and in less than an hour, the AutoXtract produces accurate asphalt content results and clean, dry aggregates ready for sifting operations. Test results are exported to a .txt file to create customized reports. Advantages Complete extraction in less than 1 hour Fully automatic extraction process
Vortex is a organic blend of natural ingredients. It emulsifies in water at the surrounding temperature to liquefy and penetrate resin and grease. Vortex is capable of removing the toughest organic soils such as tar, asphalt, and bitumen very quickly. The following are benefits of Vortex: Biodegradable No harmful fumes All natural ingredients
The first step of the asphalt binder QA/QC process is accurately and precisely extract the asphalt mix [2]. Such an extraction process is required for asphalt binder evaluation after exposure to the construction process and in-service. The depletion of crude oil, recycled materials, and new resources could contribute to the asphalt industry [5, 6].
This standard describes a procedure for the extraction and recovery of asphalt binder from asphalt mixtures [both hot mix asphalt (HMA) and reclaimed asphalt pavement (RAP)] that have a minimal... AASHTO T 319 January 1, 2015 Standard Method of Test for Quantitative Extraction and Recovery of Asphalt Binder from Asphalt Mixtures
The asphalt binder is extracted from the asphalt mix using trichloroethylene and a centrifuge extractor. Then, the process of recovering the extracted asphalt binder begins by distilling the asphalt binder from the trichloroethylene using a rotary evaporator (rotavapor). Once the solution is concentrated to approximately 250 mL, the concentrate ...
Asphalt binder extraction procedure on newly mixed asphalt mixture contains unaged asphalt binder can be used to examine the gradation and asphalt content. Before the design of asphalt mixture with RAP, the binder (PAV aged) performance in RAP needs to be determined (Chen et al., 2019).
A literature review was conducted on the main aspects of asphalt binder extraction and recovery: i) extraction methods, ii) recovery methods and iii) solvents. The extraction methods...
1.1 Use this test method to determine, by four cold solvent extraction procedures, the percentage of asphalt in a paving mixture based on the weight of an asphalt and aggregate mixture.
2. Sample size exceeding the required weight above may not completely ignite the asphalt. PART I—DETERMINE ASPHALT CONTENT BY IGNITION METHOD 7. SCOPE 7.1 Use this procedure to determine the asphalt content of hot mix asphalt (HMA) paving mixtures using an ignition oven. Use the remaining aggregate for sieve analysis in accordance with Tex-200-F.
Standard Method of Test for Quantitative Extraction and Recovery of Asphalt Binder from Asphalt Mixtures active, Most Current Buy Now. Details. History. References Organization: AASHTO: Publication Date: 1 January 2015: Status: active: Page Count: 15: scope: This standard describes a procedure for the extraction and recovery of asphalt binder ...
The automated asphalt extraction is an innovative, efficient, quick and safe solvent-based extraction of asphalt binder from asphalt mixtures, to characterize and control the quality of asphalt mixtures by measuring asphalt content and studying the aggregate gradations.
Asphalt binder requires more investigation to be accurately and precisely extracted since it is an effective procedure for quality assurance quality control (QA/QC) and subsequent binder ...
