determining asphalt content from asphalt

Provide customers with tailor-made solutions

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING MIXTURES BY THE IGNITION METHOD TXDOT DESIGNATION: TEX-236-F MATERIALS AND TESTS DIVISION 4 – 7 EFFECTIVE DATE: JULY 2019 8. PROCEDURE 8.1 Pre-heat the ignition oven according to the manufacturer’s recommendations. 8.2 Determine and record the weight of the basket assembly to the nearest 0.1 g.

Get Price

Tex-236-F, Determining Asphalt Content from Asphalt Paving ...

Determining Asphalt Content from Asphalt Paving Mixtures by the Ignition Method Step Action 45 minutes). ♦ Do not use a fan to assist in cooling the specimen to room temperature due to the possibility of losing fines. Gradation The following steps detail determining gradation.

Get Price

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING

measured asphalt content for each ignited sample determined in Section 6.8.1 from the actual asphalt content. Average the six measured differences to determine the asphalt content correction factor. 6.9 Determining Aggregate Gradation Correction Factors:

Get Price

DETERMINING THE ASPHALT BINDER CONTENT OF HOT MIX

This procedure covers the determination of asphalt binder content of hot mix asphalt (HMA) by ignition of the binder in accordance with AASHTO T 308-10. Overview The sample is heated in a furnace at 538°C (1000°F) or less; samples may be heated by convection or direct infrared irradiation (IR). The aggregate remaining after burning can be

Get Price

Chapter 32 Tex-236-F, Determining Asphalt Content from ...

Follow these steps to determine asphalt content from asphalt paving mixtures by the ignition method. Determining Asphalt Content from Asphalt Paving Mixtures by the Ignition Method Step Action 1 Turn ignition oven on. 2 Enter the correction factor for the specific mix to be tested as determined in the 'Calibration' section of this procedure.

Get Price

Determining Asphalt Content from Asphalt paving Mixtures ...

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING MIXTURES BY THE IGNITION METHOD TXDOT DESIGNATION: TEX-236-F CONSTRUCTION DIVISION 2 – 7 03/16–12/17 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. 2.3 Tempered

Get Price

DETERMINING ASPHALT CONTENT FOR RECYCLED

Accurate RAP asphalt cement contents are a critical element in the design and construction of HMAC mixtures. Asphalt cement content is also used as the basis for determining the quantity of asphalt cement for contract payment purposes. If the actual RAP asphalt cement content is

Get Price

METHOD OF TEST FOR DETERMINING ASPHALT CONTENT

Use one part to determine the asphalt content. (In some instances, such as when testing mixes containing recycled AC, 1 kg portions may have to be used to avoid plugging the filter. This will require separating the extraction sample into two parts.) b. Split or quarter the other 2 kg portion to obtain approximately 500 g

Get Price

Refining the Ignition Method for Asphalt Content Determination

Asphalt Content Average Correction Factors - Mix 3. Table 2 summarizes the average asphalt content, average CF, and within- and between-lab standard deviations for each mix. Mixes 1 and 2 had similar within- and between-lab standard deviations: 0.089 and

Get Price

Asphalt Binder Extraction Protocol for Determining Amount ...

are different well established AASHTO procedures to determine the asphalt content of an asphalt mix, the accuracy of these test procedures may be sensitive to local materials. In addition, as the use of high recycled binder content mixes increases, there is a need to evaluate the within-lab and between-lab variability. A second goal for this ...

Get Price

Asphalt Content Testing: Solvent Extraction vs Ignition ...

One of the most basic factors to test for is the asphalt content of the material. There are two popular options to determine this value and both are relatively simple. The first employs solvent in a number of methods to separate the asphalt from the aggregate and filler materials. The other is to use an Ignition Furnace that ignites the asphalt ...

Get Price

METHOD OF TEST FOR DETERMINING BITUMEN RATIO OR

Jun 01, 2007  determining asphalt content. However, the calibration factor will not be the same. Therefore, bitumen ratio and asphalt content cannot be interchanged. One or the other must be selected and used exclusively throughout the calibration and testing process.

Get Price

SAMPLING LOCATION IMPACT ON MEASURED ASPHALT

permitted for sampling HMA to determine if some sampling locations give falsely high or low percent asphalt content results. This study was initiated in response to the forensic team’s recommendation to evaluate the different sampling locations of hot mix asphalt to determine asphalt content.

Get Price

How to calculate optimal bitumen content in asphalt mixture?

Marshall method is used to calculate optimum asphalt contents by using 5 percentages of asphalt (3.5,4.0,4.5,5.0,5.5) and find stability ,flow,density and air voids for each specimen.

Get Price

FOP AASHTO T 308 (20) - WAQTC

ASPHALT WAQTC FOP AASHTO T 308 (20) 48_T308_short_20 Asphalt 14-1 Pub. October 2020 . DETERMINING THE ASPHALT BINDER CONTENT OF ASPHALT MIXTURES BY THE IGNITION METHOD FOP FOR AASHTO T 308 . Scope . This procedure covers the determination of asphalt binder content of asphalt mixtures by ignition of the binder in accordance with AASHTO T 308-18.

Get Price

Method Statement For Laying Asphalt Pdf Download

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING MIXTURES BY THE IGNITION METHOD TXDOT DESIGNATION: TEX-236-F MATERIALS AND TESTS DIVISION 2 – 7 EFFECTIVE DATE: JULY 2019 3. SAFETY EQUIPMENT 3.1 Safety Glasses Or Face Shield. 3.2 High Temperature Gloves. 3.3 Long Sleeve Jacket. 3.4

Get Price

Four tips for controlling asphalt mix designs in the lab ...

Determine asphalt content of RAP . 3. Calculate Gse of RAP (Equation 2) 4. Assume asphalt absorption, Pba, based on experience with materials . 5. Calculate Gsb of RAP aggregate. One advantage of determining Gsb-rap this way is that it is still easy to determine the Gmm and asphalt binder content of the RAP to calculate the Gse (RAP). A ...

Get Price

Asphalt concrete - Wikipedia

Asphalt concrete (commonly called asphalt, blacktop, or pavement in North America, and tarmac, bitumen macadam, or rolled asphalt in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century.

Get Price

Determining Lab Mixing and Compaction Temperatures for ...

Asphalt Institute Technical Advisory Committee Approved 7 December 2016 The Asphalt Institute recommends that, for unmodified asphalt binders, the laboratory mixing and compaction temperatures should be determined where the viscosity-temperature line crosses the viscosity ranges of 0.17 ± 0.02 Pa-s (mixing temperature range) and 0.28 ± 0.03 Pa-s (compaction temperature range).

Get Price

PREDICTION OF RESILIENT MODULUS MODEL FOR WEARING ASPHALT

Three asphalt contents (optimum asphalt content, optimum asphalt content±0.5) were used; when the content of asphalt was increased from 4% to 4.5%, the average resilient modulus decreased by 2.923% whereas increasing the percent of asphalt content from 4.5 to 5 the average resilient modulus decreased by 1.737%.

Get Price

Asphalt Content Testing: Solvent Extraction vs Ignition ...

One of the most basic factors to test for is the asphalt content of the material. There are two popular options to determine this value and both are relatively simple. The first employs solvent in a number of methods to separate the asphalt from the aggregate and filler materials. The other is to use an Ignition Furnace that ignites the asphalt ...

Get Price

GDT 125 - Determining Asphalt Content by Ignition

determining the calibration factor and notes on calibrating mixtures containing hydrated lime and fiber additives. For a complete list of GDTs, see the Table of Contents (GDT Table of Contents in The Source, on line). B. Apparatus 1. Ignition furnace The test requires an ignition furnace designed for determining asphalt cement content.

Get Price

DETERMINATION OF ASPHALT CONTENT OF BITUMINOUS

This test method provides a procedure to determine the asphalt binder content of bituminous paving mixtures by removing the asphalt binder via pyrolysis. Bituminous mixture samples are placed in a furnace and heated past the autoignition point of the asphalt binder (typically ranging from 420 to 570°C).

Get Price

Determination of the Asphalt Binder Content of Bituminous ...

Determination of the Asphalt Binder Content of Bituminous Mixtures by the Ignition Method . 1. SCOPE. 1.1 This method of test determines the asphalt binder content of bituminous mixtures by heating the mixture until the asphalt binder fraction of the

Get Price

METHOD OF TEST FOR DETERMINING BITUMEN RATIO OR

Jun 01, 2007  determining asphalt content. However, the calibration factor will not be the same. Therefore, bitumen ratio and asphalt content cannot be interchanged. One or the other must be selected and used exclusively throughout the calibration and testing process.

Get Price

How do I calculate the percentage of asphalt in a mix?

The percentage of asphalt is: % asphalt in mix = weight asphalt / total weight. The weight of the asphalt is the gallons of converted to pounds times the percentage of asphalt in the emulsion. Using just asphalt, as in hot mix, the percentage would be 100%. For emulsions you should check with supplier, but the range is typically 55-70% asphalt.

Get Price

1853 DETERMINATION OF THE ASPHALT BINDER

The asphalt cement in the paving mixture is ignited using the furnace equipment with an internal, automated weighing system. The asphalt binder content is calculated as the difference between the initial mass of the asphalt mixture and the mass of the residual aggregate, the calibration factor and the moisture content.

Get Price

How to calculate optimal bitumen content in asphalt mixture?

Marshall method is used to calculate optimum asphalt contents by using 5 percentages of asphalt (3.5,4.0,4.5,5.0,5.5) and find stability ,flow,density and air voids for each specimen.

Get Price

5.17.04 CALCULATIONS FOR THE MARSHALL MIX DESIGN OF ...

It is the portion of the total asphalt content that remains as a coating on the outside of the aggregate particles, and is the asphalt content on which service performance of an asphalt paving mixture depends. The formula is: baP be = P b - (s P 100) P (Eq. 5, Figure 1) Where: P be = effective asphalt content, percent by total weight of mixture ...

Get Price

Four important considerations when ... - Asphalt magazine

Determining asphalt binder content. There are two standardized methods of determining the binder content of the RAP: 1. Ignition oven (AASHTO T308) 2. Solvent extraction (AASHTO T164). The solvent extraction process should be used when the properties of the recovered binder are to be tested. The disadvantage of the extraction process is the use ...

Get Price

DETERMINING THE APPLICATION RATES OF FOAMED

2. Determine Optimum Moisture Content (OMC) and Maximum Dry Density (MDD) under AASHTO T-180 (Method D). H. ASPHALT BINDER CONTENT Prepare approximately 90 lb of test materials for the asphalt binder content test. 1. Thoroughly mix a sufficient amount of water without active filler to achieve 75 % of OMC. 2.

Get Price

Method Statement For Laying Asphalt Pdf Download

DETERMINING ASPHALT CONTENT FROM ASPHALT PAVING MIXTURES BY THE IGNITION METHOD TXDOT DESIGNATION: TEX-236-F MATERIALS AND TESTS DIVISION 2 – 7 EFFECTIVE DATE: JULY 2019 3. SAFETY EQUIPMENT 3.1 Safety Glasses Or Face Shield. 3.2 High Temperature Gloves. 3.3 Long Sleeve Jacket. 3.4

Get Price

Test Procedures (200-F Series)

Determining Asphalt Content of Rock Asphalt by Hot Solvent Extraction: X: Tex-216-F: Aggregate Retention Test: X: Tex-217-F: Determining Deleterious Material and Decantation Test for Coarse Aggregates (Bituminous Mixture) X: X: Tex-220-F: Determining Percentages of White Rock Contained in Native Rock Asphalt: X: Tex-221-F

Get Price

METHODOLOGY FOR DETERMINING MOST SUITABLE

all asphalt concrete specimens, conforms to the mid point of the standard 4-c aggregate gradation specified in the Egyptian slandered specifications [17]. Five different value of asphalt content (4.0%, 4.5%, 5.0%, 5.5%, and 6.0%) were used to for Marshall Test specimens. The aggregate gradation is presented in Table (1).

Get Price