Determination of ductility of bitumen asphalt fracture scribd. Our middle east facilities acquire bulk bitumen in vessels with volumes comprising around 30,000 metric tons each cargo directly from bitumen manufacturers either they are. Importance of ductility ductility test of bitumen is. The bitumen sample is melted to a temperature of 75 to 100 0 c above the approximate softening point until it is fluid. 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. The hotductility test simulates the metallurgical degradation that occurs during a weld thermal cycle and provides a measure of the ductility of the alloy at high temperatures. The ductility test is a measure of the distance to which a bituminous material will elongate before breaking when two ends of a standard specimen are pulled apart at a uniform rate. Ductility values ranges from 0 to over 150 depending on the type of bitumen. The ductility of bituminous material is the distance in centimeters to which it will elongate before breaking when a briquette specimen of the materials. Ductility machines are used to determine the ductility of formed asphaltcement or semisolid bitumen by measuring the distance of elongation before reaching the breaking point of a briquet sample, which is pulled apart at a speci.
Pdf the research investigates the properties of bitumen modified with used tyre. Seminar presentation on bitumen free download as powerpoint presentation. The test, which is normally performed at ambient temperature, is believed to reflect the homogeneity of the binder and its ability to f. Both of these properties are aspects of plasticity. Faculty of civil engineering pavement laboratory ductility test introduction. The ductility of alloys is also affected by precipitate free zones pfzs near grain boundaries. This test method describes the procedure for determining the ductility of a bituminous material measured by the distance to which it will elongate before. Determine ductility of bitumen and its suitability for. Pdf effects of using carbon nanotubes on thermal and. A number in parentheses indicates the year of last reapproval. D 186related theory ductility test on asphalt, ductility. Ductility and elastic recovery of bituminous materials.
Ductility test on bitumen measures apparatus required, theory, procedure, precautions, observations, reporting and recommended values of bitumen ductility is discussed in this article. This serves as satisfactory binders in improving the physical interlocking the aggregates. It is commonly used as a protective coating for cellars, flat roof, walls, foundations, shafts etc. Earlier there were three grades of bitumen manufactured in india conforming to is 73 1992. Stir it thoroughly until it is homogeneous and free from air bubbles and water. Determine ductility of bitumen and its suitability for road. Ductility machines are used to determine the ductility of formed asphaltcement or semisolid bitumen by measuring the distance of elongation before reaching. Standard ductilometer for ductility test ductimeter. Ductility and elastic recovery of bituminous materials for nist traceable certified thermometers, please refer to the astm thermometer section on pages 180 through 187.
Procedure to determine the ductility of bitumen i completely melt the bituminous material to be tested by heating it to a temperature of 75 to 100 o c above the approximate softening point until it becomes thoroughly fluid. The hot ductility test simulates the metallurgical degradation that occurs during a weld thermal cycle and provides a measure of the ductility of the alloy at high temperatures. Determination of ductility of bitumen free download as word doc. Ordering information k80060 constant temperature ductility machine with circulator 0. To perform ductility test on bitumen civil engineering.
Ductility test on bitumen measures the distance in centimeters to which it elongates before breaking. Dimension of the briquette thus formed is exactly 1 cm square. The grafted nr nrgps was added as a modifier into bitumen emulsion to. This test is done to determine the ductility of distillation residue of cutback bitumen, blown type bitumen and other bituminous products as per is. Civil engineering free books, video lectures, pdf notes. Standard test method for ductility of asphalt materials. Bitumen test, ductility of bitumen ranges between, ductility test conclusion, ductility test of bitumen apparatus, ductility test of bitumen is code, ductility test of bitumen lab report pdf, ductility test of bitumen ppt, highway engineering, significance of ductility test of bitumen, we civil engineers post navigation. The ductility test gives a measure of adhesive property of. Bitumen is required in construction of roads etc and is a very valuable byproduct of the refineries. 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. Ensure that the area to be tested is dry and free from loose materials.
Standard test method for ductility of bituminous materials. According to shigleys mechanical engineering design 10th ed. Assemble the mould on a brass plate and in order to prevent the material under test from sticking, thoroughly coat the surface of the plate and the interior surfaces of the sides of the mould with a mixture of equal parts of glycerine and dextrin. Malleability, a similar property, is a materials ability to deform under pressure compressive stress. Civil engineering free books, video lectures, pdf notes free books, pdf notes, lectures. Can describe the properties of the bitumen using the specifications. The ends of a molded specimen are pulled apart in a liquidfilled trough at specified speed and temperature. Since roads involve vehicular traffic and heavy loads, they need to be built to last for a while. The ductility test is performed for determining the ductility of bituminous materials by measuring the elongation before breaking when two ends of briquette specimens are pulled apart at a specified speed and temperature.
Pour the melt in to the container to a depth of at least 10mm in excess of the expected penetration. Basic tests such as penetration, softening point, viscosity, flash and fire point and ductility test were carried out by using. Ductility is a measure of a materials ability to undergo significant plastic deformation before rupture or breaking, which may be expressed as percent elongation or percent area reduction from a tensile test. Circular holes are made at ends known as clips to grasp the stationary.
Procedure for the ductility test of bitumen the bituminous material tested is completely melted by heating it to a temperature of 75 to 100 degree celcius above the approximate softening point until it becomes thoroughly fluid. Determine ductility of bitumen and its suitability for road construction. Critical problems with using the asphalt ductility test as. The following tests are usually conducted to evaluate different properties of bituminous materials. If the road surface can stretch a little under heavy loads, it is bound to last for a while without repairs.
We use cookies to make interactions with our website easy and meaningful, to better understand the use of our services, and to tailor advertising. After stirring the fluid, pour it in the mould assembly and place it on a brass plate. Improving the ductility and elastic recovery of bitumen natural rubber latex blend tinavallie ap grumoorthy in this study, styrene monomer was grafted onto natural rubber nr via emulsion polymerization, using redox initiator as the initiation system. The h1068 ductility machines meet astm d1, d6084 and. Melt the bitumen to be tested to a temperature of 75 to c above.
The ductility test gives a measure of adhesive property of bitumen and its ability to stretch. Scribd is the worlds largest social reading and publishing site. Our middle east facilities acquire bulk bitumen in vessels with volumes comprising around 30,000 metric tons each cargo directly from bitumen manufacturers either they are bitumen refineries vb based or state of the art oil refinery. 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. Apr 09, 2017 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.
Objective for determination of ductility of distillation residue a given bitumen. 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. Ductility test apparatus conducts ductility tests of bituminous materials to measure the elongation of a binder specimen before failure. Ductility is when a solid material stretches under tensile stress. The ductility of a bituminous material is measured by the distance in cm to which it will elongate before breaking when a standard briquette. When a lowtemperature ductility test is desired, the test should be run at a temperature of 39. Bitumen is binder of pavement construction, which binds from ductility thin films around the aggregates. Oct 09, 2018 ductility test on bitumen measures the distance in centimeters to which it elongates before breaking. It is strained through 90 micron sieve, poured in the mould assembly and placed on a brass plate, after a solution of glycerin and dextrin is applied at all surfaces of the mould exposed to bitumen. Ductility tester ductility test apparatus for bitumen. Nov 20, 2017 since roads involve vehicular traffic and heavy loads, they need to be built to last for a while.
May 12, 20 objective for determination of ductility of distillation residue a given bitumen. Bitumen obtained from refineries is used as paving bitumen which conforms to is 73. Third, the asphalt test, ductility test on bitumen tester main technical parameters and indicators 1 power supply. If malleable, a material may be flattened by hammering or rolling. The binder material that does not possess sufficient ductility would. Ductility is defined as the distance in cm, to which a standard sample or briquette of the material will be elongated without breaking. The viscosity of bitumen is reduced some times by a volatile diluents this material is called cutback. The bitumen is suspended in a finely divided condition in an aqueous medium and stabilized with an emulsifier. Clipping is a handy way to collect important slides you want to go back to later. The ductility test is a measure of the distance to which a bituminous material. Place the brass plate and mold, with the briquette specimen, in the water.
Can grade a bitumen when provided a list of parameters can choose the bitumen for the particular application knows how the grading systems were developed and knows the direction towards which the future development is going. The ductility test is performed for determining the ductility of bituminous materials by measuring the elongation before breaking when two ends of briquette specimens are. In this third revision viscosity grade is accepted instead of penetration grade. Ductility test ductility is the property of bitumen that permits it to undergo great deformation or elongation. Ductility test is conducted to determine the amount bitumen will stretch at temperature below its softening point. Ductility test of bitumen is one of the main testes that you need to do during road construction. The ductility test is used to describe the ductile and tensile behavior of bituminous binders. If ductile, a material may be stretched into a wire. Bureau of indian standards has released third revision of is 73. There are a number of tests to assess the properties of bituminous materials. To measure the ductility of a given bitumen sample.
Ductility is a key component of overall weldability since weld cracking is often associated with an exhaustion of available ductility. The ductility provides the extent of adhesive nature or the properties possessed of bitumen and its capacity to stretch. Critical problems with using the asphalt ductility test as a. In the absence of any specified variations in the test method, the test procedure as. To perform ductility test on bitumen ductility is the property of bitumen that permits it to undergo great deformation or elongation. Modified bitumen is also widely used in waterproofing application for mineral substrates. A waterborne modified bitumen is solvent free, and can be applied by spray, roller or brush.
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. The dimension of the briquette thus formed is exactly 1 cm square. Critical problems with using the asphalt ductility test as a performance index for modified binders. The ductility test is measure of cohesiveness and elasticity of the bitumen. Determining the ductility of bitumen civil engineering. Improving the ductility and elastic recovery of bitumennatural rubber latex blend tinavallie ap grumoorthy in this study, styrene monomer was grafted onto natural rubber nr via emulsion polymerization, using redox initiator as the initiation system. Pdf critical problems with using the asphalt ductility test as a. 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. Tensile strength and ductility of specimens can be measured concurrently with the addition of the force ductility kits. Ductility is the property of bitumen that permits it to undergo great deformation or elongation. The test, which is normally performed at ambient temperature, is believed to reflect the homogeneity of the binder and its ability to flow. Pdf despite the adaptation of advanced binder rheology characterization methods by many agencies, the asphalt ductility test is still under use in.
Asphalt ductility tester is commonly used petroleum testing equipment. Melt the bituminous test material completely at a temperature of 75c to 100 c above the approximate softening point until it becomes thoroughly fluid. Standard test method for ductility of bituminous materials1 this standard is issued under the. Apparatus required, theory, procedure, precautions, observations, reporting and recommended values of bitumen ductility is discussed in this article. Assemble the mould on a brass plate and in order to prevent the material under test from sticking, thoroughly coat the.
Exp 11 ductility test on asphalt civil engineers pk. To determine the suitability of bitumen for its use in road construction. Ductility simple english wikipedia, the free encyclopedia. Now customize the name of a clipboard to store your clips. Method typical quality 1 absolute viscosity at 60c, poises 2400, min is 1206part 2 2500. The ductility can be described as the distance of elongation to which a bitumen. Ductility of bitumen is its property to elongate under traffic load without getting cracked in road construction works. Knows which parameters to test from bitumen in order.