The water evaporates and the bitumen remains on the surface. Astm d1 17 standard test method for ductility of asphalt. An emulsifier must be added to give a stable solution. The specification of bitumen also shows variation with the safety, solubility, physical properties, and the durability. The ductility test is measure of cohesiveness and elasticity of the bitumen. Properties of modified bitumen obtained from natural. Melt the bitumen to be tested to a temperature of 75 to c above. History of asphalt grading systems 12 astm d 3381 viscosity graded.
However a ductility of 100 cms is specified generally for bituminous construction. The ductility is a distinct strength of bitumen, a llowing it to. Vonk et al 11, suggested that bitumens homogeneity is a condition for good ductility, and the lower the asphaltene content, the better ductility. 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. Tests applied on bitumen procedure of tests on asphalt. Circular holes are made at ends known as clips to grasp the stationary.
Dimension of the briquette thus formed is exactly 1 cm square. Bitumen sources natural, petroleum, types, asphalt its constituents, hot mix, cold mix polymers explanation of polymerization types of polymers thermosetting and thermoplastic uses eg dust arrester, soil stabilization, prevent setting of cold asphalt. Apparatus required, theory, procedure, precautions, observations, reporting and recommended values of bitumen ductility is. Defintion the ductility of bituminous material is the distance in centimeters to which it will elongate before breaking when a briquette specimen of the materials is pulled at a specified speed and at specified temperature. Seminar presentation on bitumen free download as powerpoint presentation. Pdf despite the adaptation of advanced binder rheology characterization methods by many agencies, the asphalt ductility test is still under. The primary use of asphalt is in road construction, where it is used as the glue or binder mixed with. Critical problems with using the asphalt ductility test as. Determination of ductility of bitumen free download as word doc. Jun 17, 2016 the ductility test gives a measure of adhesive property of bitumen and its ability to stretch. Determining the ductility of bitumen civil engineering. Bitumen bound materials types of bituminous material highway ii bitumen bound materials 5 bitumen is a petroleum product obtained by the distillation of petroleum crude bitumen is a hydrocarbon material of either natural or pyrogenous origin, found in gaseous, liquid, semisolid or. Release the needle for five seconds and measure the distance penetrated. Bitumen asphalt also known as bitumen, is a sticky, black and highly viscous liquid or semisolid form of petroleum.
Bitumens and bitumen emissions bitumens and bitumen. Bitumen bound materials definitions and terminology highway ii bitumen bound materials 4 cutback asphalt. High performance ductilometer for force ductility test. Ductility test the ductility test astm dll3 measures the distance a standard asphalt sample will stretch without breaking under a standard testing condition 5 emmin at 25 c. We know that the ductility of a material is the ability of that material to undergo plastic deformation permanent deformation before the rupturing breaking of that material. Penetration value of gondorukembitumen figure 2 shows the average value of penetration at each percentage of gb.
Asphalt binder basics north dakota local technical. The temperaturevsstiffness relationship of bitumen is dependent on the source of crude oil and the method of refining. Bitumen, penetration grade, quality control, statistics, viscosity grade. 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. We know that the ductility of a material is the ability of that material to undergo plastic deformation permanent deformation. Ductility is defined as the distance in cm, to which a standard sample or briquette of the material will be elongated without breaking. Objective i to compute the ductility of a specific specimen of bitumen ii to assess the suitability of bitumen for its application in road construction. Performance ductility testing machine, pc controlled, 4 briquettes capacity, 1500 mm carriage travel, adjustable testing speed from 5 to 100 mmmin, thermostatically controlled water bath at 250. The ductility test astm d1 measures the distance a standard asphalt sample will stretch without breaking under a standard testing condition 5 cmmin at 25 c. Introduction viscosity grading system has been adopted by india recently. It has been shown that the performance of polymer modified bitumen with polyethylene is better than conventional 80100 grade bitumen and binder modified with crumb rubber. In elastic pavement design, it is important that binder has to create a shrill ductile film round aggregates so that physical interconnecting of the aggregates is amended. A study on the significance of the ductility test for bitumen. Roads expand at daytime while they contract at night.
Enhancement into bituminous properties using forta fibre. Ductility is the property of bitumen 4050 60100 and 80100 that permits it to undergo great deformation or elongation. Determine ductility of bitumen and its suitability for road. The ductility of a bituminous material is measured by the distance in cm to which it will elongate before breaking when a standard briquette specimen of the material is pulled. Critical problems with using the asphalt ductility test as a. Exp 11 ductility test on asphalt civil engineers pk. Third, the asphalt test, ductility test on bitumen tester main technical parameters and indicators 1 power supply. Bitumen bound materials types of bituminous material highway ii bitumen bound materials 5 bitumen is a petroleum product obtained by the distillation of petroleum crude bitumen is a hydrocarbon material of either natural or pyrogenous origin, found in gaseous, liquid, semisolid or solid form. Standard test method for softening point of bitumen ring.
The ductility of a bituminous material is measured by the distance in cm to which it will elongate before breaking when a standard briquette specimen of the. Since roads involve vehicular traffic and heavy loads, they need to be built to last for a while. The ductility of bituminous material is the distance in centimeters to which it will elongate before breaking when a briquette specimen of the materials. Pdf critical problems with using the asphalt ductility test as a. Ductility value increases up to 1% to 7% in case of containing binder material forta fi 1%, 2% and 3% of bituminous mix. Dec 08, 2016 this test is done to determine the ductility of distillation residue of cutback bitumen, blown type bitumen and other bituminous products as per is. Ductility test of bitumen 22 jan 2018 1 apr 2018 aim.
Experimental study in the present work experimental study was carried out using polymer modified bitumen, pmb70 and conventional bitumen of 6070. The ductility of a bituminous material is defined as the distance in centimeters, to which it will elongate before breaking when two ends of a briquet specimen of the material, are pulled apart at a specified speed and a specified temperature. To understand the performance of the bitumen when it is on service, the design of. Nov 20, 2017 since roads involve vehicular traffic and heavy loads, they need to be built to last for a while. Several agencies have specified minimum ductility values for various types of bitumen pavements. Bituminous materials consists of bitumen which is a black or dark coloured solid or viscous. Bitumen bound pavement materials penetration grade bitumens penetration grade bitumens or asphalt cements are in consistency from semisolid to semiliquid at room temperature. Determining the ductility of bitumen linkedin slideshare. Ductility test on bitumen measures the distance in centimeters to which it elongates before breaking. It is used in both paving and roofing operations, depending on whether a paving or roofing asphalt is liquefied. Objective for determination of ductility of distillation residue a given bitumen. Standard test method for ductility of bituminous materials1 this standard is issued under the. History of asphalt grading systems 2 chewing first mode of testing to determine asphalt hardness initially used for natural asphalts such as trinidad lake asphalt trinidad asphalt contains colloidal clay of volcanic origin solubility in carbon disulfide used to determine the purity first sheet asphalt pavement using trinidad asphalt pennsylvania avenue, washington. In flexible pavement design, it is necessary that binder should form a thin ductile film around.
Asphalt that is liquefied by the addition of diluents typically petroleum solvents. Asphalt binder properties 12 liquid semisolid temperature asphalt is a thermoplastic material that softens as it is heated and hardens when cooled. Ductility test of bitumen is one of the main testes that you need to do during road construction. Bitumen is required in construction of roads etc and is a very valuable byproduct of the refineries. It is generally considered that an asphalt with a very low ductility will have poor adhesive properties and thus poor performance in service. The penetration value of 0% gondorukem in bitumen is 80 mm, while the penetration value for 3% to 10% gb results ranged from 70 to 60 mm. An analysis of the primary factors governing the ductility of bitumens, as determined by the wellknown test, is given. Apparatus required, theory, procedure, precautions, observations, reporting and recommended values of bitumen ductility is discussed in this article. The bitumen sample is heated and poured in the molds assembly placed on a plate. Apr 09, 2017 the ductility provides the extent of adhesive nature or the properties possessed of bitumen and its capacity to stretch.
If the road surface can stretch a little under heavy loads, it is bound to last for a while without repairs. Bitumen emulsion bitumen emulsions are suspensions of bitumen droplets in water. Cutbacks are typically used in sprayed sealing applications and deferred set or cold mixtures. To obtain the ductility value of bituminous sample. Bitumens and bitumen emissions were previously evaluated by iarc working groups in 1984 and 1987 iarc, 1985, 1987.
Fatigue behavior, cyclic indirect tensile test citt, polymermodified bitumen 1 motivation bitumen manufacturers follow different approaches to realize a high quality and durable polymermodified bitumen pmb. The h1068 ductility machines meet astm d1, d6084 and. Bitumen bitumen is a thermoplastic material and its stiffness is dependent on temperature. Their quality depends upon the nature and origin of.
Determine ductility of bitumen and its suitability for road construction. Asphalt ductility tester is commonly used petroleum testing equipment. Standard test method for softening point of bitumen ring andball apparatus1 this standard is issued under the. Marshall stability value and marshall flow value is also increase, when fibre content increases with bitumen.
The current types of cold rolled materials are based on. To determine the ductility of distillation residue of cutback bitumen, blown type bitumen and other bituminous products as per is. Cutback bitumen products are preparations of standard grade bitumen and a solvent usually kerosene used to reduce the viscosity of the bitumen. Types of bitumen classifications native bitumen cutback bitumen emulsion bitumen modified bitumen emulsions when mixed with water binders will generally settle out. The ductility of a bituminous material is defined as the distance in. Such bitumens are graded according to their viscosity mainly used in the us. Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Ductility is the property of bitumen that permits it to undergo great deformation or elongation. The water bath liquid shall be freshly boiled distilled water when testing materials having softening points below 80 0c and pure glycerin for material having. This test is done to determine the ductility of distillation residue of cutback bitumen, blown type bitumen and other bituminous products as per is. Determine ductility of bitumen and its suitability for. Different types of bitumen, their properties and uses.
The ductility test gives a measure of adhesive property of bitumen and its ability to stretch. Asphalt binder basics specifications, history and future. Determination of ductility of bitumen asphalt fracture scribd. Ultimately seen this combination can produce bitumen with r11515 and r9525 grade.
D117 standard test method for ductility of asphalt materials elongation test specimens asphalt. Ductility of bitumen is its property to elongate under traffic load without getting cracked in road construction works. What is the engineers interest for doing this test. Bitumen quality and manufacturing processespast and. Din en 589 bitumen and bituminous binders determination of the tensile properties of modified bitumen by the force ductility method. Assemble the apparatus with the rings, thermometer and ball guides in position fill the bath to a height of 50mm above the upper surface of the rings with the freshly boiled distilled water or pure glycerin at a temperature of 5 0c. To perform ductility test on bitumen civil engineering. In this instance, the test was conducted at a faster deformation. Figure 7 shows the effect that an increase in sbs polymer can have on the force ductility curve of standard bitumen. Method typical quality 1 absolute viscosity at 60c, poises 2400, min is 1206part 2 2500 2 kinematic viscosity at 5c 350, min is 1206part 3 360 3 flash point coc deg. A number in parentheses indicates the year of last reapproval. Bulk density, stability and flow rate of bituminous mix increases in case of increasing percentage of bitumen content. D 186related theory ductility test on asphalt, ductility. Until the 20th century, the term asphaltum was also used.
Bitumen vg 3040 60 70 asphalt also known as bitumen, is a sticky, black and highly viscous liquid or semisolid that is present in most crude petroleums and in some natural deposits, it is a substance classed as a pitch. Read a detailed procedure of bitumen penetration test with sample data. Effect of different polymermodified bitumen of the same sort. Introduction natural bitumen is usually byproduct that have petroleum. There are different types of bitumen available with different properties, specifications and uses based on requirements of consuming industry.
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