Approved asphalt quality control technician course manual odot. Evaluation of different test methods for bitumen adhesion. Pdf testing of bitumenaggregate affinity by various methods. Ductility is the property of bitumen that permits it to undergo great deformation or elongation.
Astm d2042, astm d4, aashto t44 test set is used to determine the degree of solubility in trichloroethylene of asphalt materials having little or no mineral matter. Determining moisture content of bituminous mixtures txdot. Table 4016 test tolerance aashto t 59, emulsified asphalts. The new viscosity grading system conforms to is 732006 paving bitumen specification third revision. Pdf evaluation of different test methods for bitumen.
Standard test method for viscosity determination of. Assemble the mould on a brass plate and coated on all the sides with a mixture. Standard test method for penetration of bituminous materials. This procedure covers the sampling of bituminous paving mixtures from hma plants, haul units, and roadways in. Bitumen content this test is done to determine the bitumen content as per astm 2172. Sometimes, its found near the surface mixed in with sand and other debris, while in other instances, it can.
For a full assessment of adhesion, the entire bitumenaggregateadhesion system must be tested which is beyond the scope of a bitumen specification. Penetration test is used to measure the consistency of bitumen, so that they can be classified into standard grades. Advanced mix design of coldrecycled bitumen stabilized material focus on the. The multiple stress creep recovery mscr test is the latest improvement to the superpave performance graded pg asphalt binder. Spot test of asphaltic materials set supports the following standards. Figure 3general representation of bitumen bond strength test apparatus 6. Use this test method to determine the moisture content of any type of bituminous paving mixtures by direct measurement and to. D36d36m test method for softening point of bitumen ringandball apparatus. The natural aggregate is usually a gap graded blend to accommodate. To test two samples tested, 50 grams of bitumen, 5. Melt the bitumen to be tested to a temperature of 75 to c above its approximate softening point till it becomes fluid. However, some bituminous materials containing finely divided mineral matter may clog the filter or the mineral residue may not be easily retained, in which cases.
Bitumen quality and manufacturing processespast and. Softening point of bitumen, test method isfahan bitumen. Design procedure for bituminous stabilized road surfaces for low volume roads. It is not expected for the modulus values obtained to be univocal, whatever the procedure. Tests and frequency for ia for viscosity and sieve are shown in table 4015. Exp 9 specific gravity of bitumen civil engineers pk. Test method to determine the softening point of bitumen based on astmd36. In this method, the bitumen sample is kept in 500ml heat resistant glass container. The softening point is defined as the mean of the temperatures at which the bitumen disks soften and sag downwards a distance of 25 mm under the weight of a steel ball. Standard test method for penetration of bituminous materials1 this standard is issued under the.
Start after 5 secs dial gauge reads penetration in mm penetration test penetration needle 1. This is the most widely used method of measuring the consistency of a bituminous material at a given temperature. Aggregate and bitumen testing construction aggregate. Aggregate and bitumen testing construction aggregate rock. Laboratory performance test for asphalt concrete mndot. Design procedure for bituminous stabilized road surfaces. It composes 87% carbon, 11% hydrogen and 2% oxygen by weight. According to the thermal degradation of tar bitumen is a ratio of weight loss at 163 c for 5 hours, heating degree airplaced in the device.
Bitumen quality aspects in view of huge expenditure involved in the construction of new roads and maintenance of the existing road network, the quality considerations of bitumen have become a subject ofinterese4. From the graph, determine the temperatures for mixing and compaction, taking into account the viscosity requirements stipulated in table 1. Make at least three determinations at points on the surface of the sample not less than 10mm apart and not less than 10mm from the side of the dish. The asphalt mixture design and acceptance procedures for minnesota. This is obtained by blowing air into hot bitumen at high temperatures normally beyond 180 0c. Bitumen content may usually be expeditiously and accurately determined by procedure no. Tolerance between ia and acceptance tests are in table 4 016. Follow the appropriate sections, notes, temperatures and times that are outlined in mndots modified test method a when determining all correction factors and asphalt contents. No better, practical test procedure was identified to warrant replacement of the currently used vialit test, but suggestions were made for changes to the method to potentially improve its precision. The principal types of bitumen are referred to as paving formerly penetration grade, hard paving grade, oxidised grade, hard industrial grade and cutback bitumens, plus polymermodified bitumens. Sample size depends on the test methods specified by the agency for acceptance. Note 1for guidance in preparing and testing emulsion residue. Ip bitumen safety code provides good health, safety and environmental pr otection practice, rather than a set of rigid rules, for the whole product life cycle of manufacture, ble nding, storage, distribution, handling, use and sampling.
Procedure for bitumen penetration test i preparation of test specimen. Generally higher penetration bitumen is preferred for use in cold climate and smaller penetration bitumen is used in hot climate areas. Viscosity grade bitumen is categorized according to viscosity. For a full assessment of adhesion, the entire bitumen aggregateadhesion system must be tested which is beyond the scope of a bitumen specification.
Penetration value of bitumen determination for road construction. Standard test method for penetration of bituminous materials1. Ss 1043 calibrationtest procedures for nuclear ac gauge. Pdf the adhesion between mineral aggregates and bitumen is an important criterion which describes the quality of the asphalt mixture, asphalt pavement. Attaches over existing pin in ductilometer without tools or machine modi. Softening point is the temperature at which tar in soft loop and pass the ball through the hoop. Exp 12 softening point of bitumen civil engineers pk. Standard test method for ductility of bituminous materials.
When natural seepages of bitumen are intruded by fine mineral matter, they are referred to as natural asphalts asphalte. Standard test method for softening point of bitumen ring andball apparatus1 this standard is issued under the. The testing apparatus depicted in figure 3 is a commercially available device produced by gardco inc. This is a course designed for understanding the asphalt testing. Bitumen is a mixture of organic liquids that is black, highly viscous, sticky product used for paving roads, waterproofing products used in sealing roofs. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard astm standards. Table 4015 test frequency aashto t 59, emulsified asphalts 2 test results per project. Combine the increments to form a sample of the required size. Aashto t102 spot test set only for asphaltic products derived from petroleum not to be used for natural asphalts containing nonbituminous matter insoluble in xylene. The grade of bitumen used for pavement construction work of roads and airfields are called paving. The basic rotational viscosity test measures the torque required to maintain a constant rotational speed 20 rpm of a cylindrical spindle while submerged in an asphalt binder at a constant temperature. Isfahan bitumen production company ibpc is a dynamic and reputable company based in historic city of isfahan, iran.
Release the needle for five seconds and measure the distance penetrated. In this test we examine the consistency of a sample of bitumen by determining the distance in tenths of a millimetre that a standard needle vertically penetrates the bitumen specimen under known conditions of loading, time and temperature. Tar is a thermoplastic material obtained from the destructive distillation. En 12697 26 includes several methods with different test configurations see box 1.
Water content in bitumen is determined by dean and stark method. Rdgn022 mix design of bituminous materials page 3 of 3. In viscosity grade viscosity test are conducted at 60 c and 5 c which represents the temperature of road surface during summer and. Atm 401 sampling bituminous materials alaska department of. Stainless steel unit has springloaded movable platform to which sample is attached. Standard test method for softening point of bitumen ring.
The bitumen quality varies with the variation in crude oil source and refining process, which often cause. It is a semi solid hydrocarbon product produced by removing the lighter fractions such as liquid petroleum gas, petrol and diesel from heavy crude oil during the refining process. Bitumen performance tests april 2016 nz transport agency. Design procedure for bituminous stabilized road surfaces for. Figure 2 complex modulus e bitumen mixes, g bitumens one of the experimental curves, used as a reference shifting. Note 2the precision statement for ductility, as presented in fig.
As indicated in the scope of the standard, use of these procedures is aimed at classification of the formulations. Bitumen is very important component of many construction sites like roads, highways. Brass ring device filled with molten bitumen and bitumen wait until cool. Figure 3 general representation of binder bond strength test apparatus. Industrial grade bitumen is also known as blown bitumen. Soften the material to a pouring consistency at a temperature not more than 60c for tars and 90c for bitumen above the approximate softening point and stir it thoroughly until it is homogeneous and is free from air bubbles and water. There are many tests which are conducted to check the quality of bitumen. Bitumen is a thick, molassestype product that is found in regions around the world, but more locally in the oil sands regions of northern alberta, canada. Report on available test and mix design procedures for cold.
Bituminous mix design is a delicate balancing act among the proportions of various aggregate sizes and bitumen content. Standard test method for viscosity determination of asphalt. Determining asphalt binder bond strength by means of the. For a given aggregate gradation, the optimum bitumen content is estimated by satisfyi ng a number of mix design parameters. Determining asphalt content of bituminous mixtures by. Bitumen and aggregate test using in road construction.
The study was conducted in three phases, first phase focused on merging the asphalt. Aggregate and bitumen testing free download as powerpoint presentation. Other devices meeting the requirements of this procedure can be used. Solubility of bituminous materials test set supports the following standards. To perform penetration test on bitumen civil engineering. Balance or scales capable of weighing the sample to an accuracy of 0. Bitumen quality and manufacturing processespast and present.
Explain why specific tests, equipment, and procedures have changed over time. Cutback asphalt is a liquid asphalt which is a blend of asphalt and petroleum solvents. The portion that is soluble represents the active cementing constituents. However, the image segmentation procedure cannot be based purely on intensity thresholding because the light reflections on the glossy surface of bitumen merge together with light aggregates, and. Objective to become familiar with the term viscosity, its influence and effects, its techniques and application in the field of engineering especially for design of the road pavements. Test set is used to determine the degree of solubility in trichloroethylene of asphalt materials having little or no mineral matter. Various laboratory tests on bitumen is conducted to check quality and different properties of bitumen for pavement construction. A number in parentheses indicates the year of last reapproval. Greater value of penetration indicates softer consistency.
Bitumen 3040 is used in specialized applications like airport runways and also in very heavy traffic volume roads in coastal cities in the country. This technical brief provides an overview of the intent of the superpave mscr procedure to evaluate asphalt binder and its relation to asphalt pavement performance. Seal the container as soon as possible after sampling. Applying sampling procedure for steel correctly applying sampling procedure for soils correctly applying sampling procedure for bitumen correctly applying sampling procedure for timber as required applying sampling procedure for concrete correctly applying sampling procedure for masonry correctly. Asphalt materials and paving mixtures asphalt materials. The new viscosity grading system conforms to is 732006 paving bitumenspecification third revision. The apparatus needed to determine bitumen content are i centrifuge extractor ii miscellaneous bowl, filter paper, balance and commercial benzene. When bitumen is heated above the boiling point of water, sometimes foaming of bitumen occurs. The f4 piston depicted in the figure has a diameter of 73. Anumber in parentheses indicates the year of last reapproval.
Penetration value of bitumen determination for road. In the standard test for bitumen content astm d4, a small sample of about 2 g of the asphalt is dissolved in 100 ml of carbon disulfide and the solution is filtered through a filtering mat in a filtering crucible. D8 terminology relating to materials for roads and pavements. Ductility is defined as the distance in cm, to which a standard sample or briquette of the material will be elongated without breaking. Bitumen is a petroleum product obtained by the distillation of petroleum crude. Bitumen is a black or brown mixture of hydrocarbons obtained by partial distillation of crude petroleum. Astm d4 862018 standard test method for bitumen content. Standard test method for softening point of bitumen ringand. Pdf evaluation of different test methods for bitumen adhesion. Tests applied on bitumen procedure of tests on asphalt.
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