Procedure for bitumen specific gravity the specific gravity bottle along with the stopper is cleaned, dried and weighed the weight a. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gasfree distilled water at a stated temperature. The difference in weights is divided by the weight of an equal volume of water to give the specific gravity of the liquid. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard. The importance of specific gravity dynamix agitators. Specific gravity weight of bituminous materialweight of equal volume of water ca badc where, a weight of specific gravity bottle, g. The experiment has been performed successfully and the mean penetration value came out to be 79. In such cases the specific conditions of test shall be reported. Density is important because proper density in the finished product is essential for lasting pavement performance.
The higher the viscosity of the bitumen more time will be required for a quantity to flow out. The specific gravity can tell us, based on its value, if the object will sink or float in our. Is 12021978, first revision, methods for testing tar and bituminous materials. Viscosity test viscosity denotes the fluid property of bituminous material and it is a measure of resistance to flow. Determination of specific gravity, bureau of indian standards, new delhi. Basically, specific gravity defines that the substance is how much heavier than water or reference substance of the same volume. Bulk specific gravity or density the density of the compacted mix is the unit weight of the mixture the weight of a specific volume of hma. The principle is that it is the ratio of mass of a given volume of bitumen to the mass of an equal volume of water, both taken at a. Specific gravity for liquids is nearly always measured with respect to water at its densest at 4 c or 39. Apparatus specific gravity bottle of 50 ml capacity, ordinary capillary type with 6 mm diameter neck or wide mouthed. What is the specific gravity of bitumen various petroleum products with specific gravity different pitch.
If the specific gravity of the material is less than 1, then that material floats in water. The specific gravity of pure bitumen ranges from 0. Determining specific gravity of bitumen civil engineering. The standard specific gravity test is carried out at a temperature of 250c. Specific gravity specific gravity of bitumen the specific gravity of semisolid bituminous material, asphalt cements, and soft tar pitches shall be expressed as the ratio of the mass of a given volume of the material at 25 c to that of an equal volume of water at the same.
If the student fails to attend the regular lab, the experiment has to be completed in the same week. Determination of the specific gravity of micro quantities. Specific gravity is defined as the ratio of weight of aggregate to the weight of equal volume of water. What is the specific gravity of bitumen and what are the. Astm d70 97 standard test method for specific gravity and. The specific gravity of bitumen is defined as the ratio of mass of given volume of bitumen of known content to the mass of equal volume of water at 27 0 c. Bulk specific gravity of aggregate is important information for designing hma because it. Improved test methods for specific gravity and absorption. So if the specific gravity of any substance is known to us we can use the materials in suitable place of any work. Specific gravity of cement or desnsity of cement le. Physical and chemical properties of crude oil and oil products 1 density, specific gravity, and api gravity density is defined as mass per unit volume of a fluid. The following data was collected at laboratory conditions for the completion of the specific gravity lab. Properties considered in mix design superpave mix design method. Determination of the specific gravity of micro quantities of bituminous substances by rodney edgerton cox a dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of doctor of philosophy major subject.
No date name of the experiment staff signature remarks 12 flash and fire point test determine the test on specific gravity 14 determination of penetration value 15 determination of softening point test 16 determination of ductility of bitumen 17 determination of viscosity 18 determination of bitumen by centrifuge extractor 19. To determine the specific gravity of semisolid bitumen road tars, creosote and anthracene oil as per is. The specific gravity bottle is weighed about halffilled with the material weight c. Theoretical maximum specific gravity gmm and density of hot mix asphalt hma paving mixtures fop for aashto t 209 scope this procedure covers the determination of the maximum specific gravity gmm of uncompacted hot mix asphalt hma paving mixtures in accordance with aashto t 20912. Specific gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water. The value of specific gravity for the existing soil falls in the range 2. Theoretical maximum specific gravity of bituminous mixtures txdot. The specific gravity of the material is calculated as follows. Specific gravity of soil by pycnometer methodprocedure and. Bitumen asphalt is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulfide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons. The specific gravity is the ratio between the density of an object, and a reference substance. It is kept in the water bath having a temperature of 27. For good pavement construction, the range of specific gravity of bitumen should be 0.
Live bitumen extraction test for dense bituminous macadam pwd road construction civil engineering. Dec 27, 2019 the value of specific gravity for the existing soil falls in the range 2. Gases are commonly compared with dry air, which has a. 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.
The specific gravity of an aggregate is considered to be a measure of strength or quality of the material. Specific gravity, ratio of the density of a substance to that of a standard substance. Specific gravity is a measure of a materials density mass per unit volume as compared to the density of water at 73. The principle is that it is the ratio of mass of a given volume of bitumen to the mass of an equal volume of water, both taken at a recordedspecified temperature. Factors affecting the measurement of effective specific. The experiment is conducted as per the procedure laid down. The specific gravity bottle is filled with freshly boiled distilled water and the stopper is inserted firmly.
Specific gravity of bitumendefinition, test and procedure. Bitumen 80100 is used as a binder of mineral aggregates in asphalt concrete and hot laid plant mix for highways, airports, parking areas, driveways and curbs. This lab is performed to determine the specific gravity of soil by using a pycnometer. This test is done to determine the specific gravity of finegrained soil by density bottle method as per is. Determination of the specific gravity of micro quantities of. Specific gravity of bituminous material is known as the proportion of mass of specified capacity of substance to the equivalent volume of water.
Relative density, or specific gravity, is the ratio of the density mass of a unit volume of a substance to the density of a given reference material. Specific gravity is the ratio of the weight in air of a given volume of a material at a standard temperature to the weight in air of an equal volume of distilled water at the same stated temperature. C670 practice for preparing precision and bias statements for test methods for construction materials. Specific gravity of semi solid bituminous materials aashto t228. Jual specific gravity of semi solid bituminous materials di bekasi di jakarta di karawang di bandung cv java dwipa mandiri 081296389800 spesifikasi specific gravity of semi solid 1 set bituminous materials astm d70 aashto t228 consist of.
Properties considered in mix design superpave mix design. Assessment of specific gravity of a specified sample of bitumen apparatus. Mix properties are required to be measured in volumetric terms as well as weight. Specific gravity of bitumendefinition, test and procedure steps for. Specific gravity is defined as the ratio of the mass of a given volume of the bituminous material to the mass of an equal volume of water, the. In this test, time in seconds is noted for 60 ml of the liquid bitumen at specified temperature to flow through an orifice of a specific size. Gases are commonly compared with dry air, which has a density of. Consistency of a bituminous material expressed as the distance in tenths of a millimeter that a standard needle vertically penetrates a sample of the material under known conditions of loading, time, and temperature. Astm d70 97 standard test method for specific gravity. Materials that have a lower specific gravity are lower boiling point thus one of the first applications of this parameter has been using it for the distillation of crude oil. If the material has a specific gravity greater than. Apr 07, 20 live bitumen extraction test for dense bituminous macadam pwd road construction civil engineering. Specific gravity of bituminous material is known as the proportion of mass of specified capacity of substance to the equivalent volume of water, temperature of both of them approximating 27 degree celsius. Determining specific gravity of bitumen civil engineering portal.
Proper use of high amounts of reclaimed asphalt pavement rap in recycled asphalt mixtures requires a better understanding of rap properties before mix design to ensure confidence that rap properties are not changed by the mix design or asphalt production process. Coarse aggregate specific gravity pavement interactive. The specific gravity of semisolid bituminous material, asphalt cements, and soft tar pitches shall be expressed as the ratio of the mass of a given volume of the material at 25 c to that of an equal volume of water at the same temperature. Determination of the specific gravity of micro quantities of bituminous.
Specific gravity is a unitless value that relates the density of a substancesoil and the density of water. Therefore, by definition, water at a temperature of 73. Use this test method to determine the theoretical maximum specific gravity commonly referred to as rice gravity of a bituminous mixture. According to the tables the values ranging from 50 to 149 should have difference of maximum 4. Pdf physical properties of agbabu and yegbata bitumen in. Specific gravity of soil by pycnometer methodprocedure. Aggregates having low specific gravity are generally weaker than those with high specific gravity. The specific gravity can be measured using either pycnometer or preparing a cube specimen of bitumen in semi solid or solid state. Determine the specific gravity of soil civil engineering. Then the manualobservation and record will be evaluated for 50% of maximum marks. We calculate specific gravity to know the behaviour of the material in water.
In simple words, we are comparing the volume of our testing material either it may be sand, cement, aggregate with the same volume of water at certain temperature. The specific gravity lab was conducted on a soil sample collected at the southeastern portion of the fgcu food forest. This test is done to determine the specific gravity of semi solid bitumen road tars, creosote and anthracene oil as per is. Exp 9 specific gravity of bitumen civil engineers pk. Bulk specific gravity is defined as the ratio of the weight of a given volume of aggregate, including the permeable and impermeable voids in the particles, to the weight of an equal volume of water. Raw data the specific gravity lab was conducted on a soil sample collected at the southeastern portion of the fgcu food forest. The specific gravity may be expressed as bulk oven dry o. Test results showed that the specific gravity for the bitumen sampleswas 1.
Bulk specific gravity of aggregate is important information for designing hma because it is used to calculate. Based on the findings of experiment 2, it was recommended that aashto t 85 be used for measuring specific gravity and absorption of coarse aggregate and the modified aashto t 84 and ssdetect methods be used for measuring specific gravity and absorption of fine aggregate. Penetration test ductility test viscosity test softening point test flash and fire point test float test solubility test specific gravity test. Factors affecting the measurement of effective specific gravity for reclaimed asphalt pavement. Each tons of asphalt needed 70kg bitumen and the rest is aggregates. Bitumenasphalt is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulfide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons. Every material has its own specific gravity, and it usually ranges between 0. The bottle is weighed, filled with the liquid whose specific gravity is to be found, and weighed again. If there is any variation, check under the specification provided and redo the experiment to get accurate results.
Bitumen is a nonfuel products and has many classes 80100 grade 50 70 grade 6070 grade 85100 grade. Specific gravity penetration test ductility test softening point of bitumen. Specific gravity is the ratio of a weight of volume of material your testing material to the same weight of volume of water. This is a glass jar of 1 litre capacity that is fitted at its top by a conical cap made of brass. The major measuring equipment in this test is pycnometer. To determine the specific gravity of given bituminous material. Specific gravity of soil by pycnometer method equipment for specific gravity test of soil. Apr 30, 2017 specific gravity of bituminous material is defined as ratio of mass of given volume of substance to the equal volume of water, temperature of both being 27c. Because the specific gravity of asphalt binders change with temperature, specific gravity tests are useful in making volume corrections based on temperature. Specific gravity of bitumen the specific gravity of semisolid bituminous material, asphalt cements, and soft tar pitches shall be expressed as the ratio of the mass of a given volume of the material at 25 c to that of an equal volume of water at the same temperature. Specific gravity is the ratio of the mass of unit volume of soil at a stated temperature to the mass of the same volume of gasfree. The usual standard of comparison for solids and liquids is water at 4 c 39. Sl no title of the experiment page no 1 test on cement a standard consistency 14 b setting time test on cement 58 c specific gravity of cement 912 d soundness of cement 16 e compression strength test 1722 2 test on fresh concrete a slump test 2326 b compaction factor test 2730 c vee bee test 33.
Some deleterious particles are lighter than the good aggregates. The specific gravity can be measured using either pycnometer or preparing a cube specimen of bitumen in the semisolid or solid state. It is the ratio of mass of a given volume of bitumen to the mass of an equal volume of water, both taken at a recordedspecified temperature. Experiment 4 specific gravity determination purpose. Specific gravity and absorption of coarse aggregate. Physical and chemical properties of crude oil and oil products. Jul 21, 2014 introduction specific gravity is defined as the ratio of the mass of a given volume of the bituminous material to the mass of an equal volume of water, the temperature of both being specified as 270c.
Density is a state function and for a pure compound depends on both temperature and pressure and is shown by liquid. A typical specific gravity for asphalt is around 1. This test is done to determine the specific gravity of semisolid bitumen road tars, creosote and anthracene oil as per is. To get data sheet of bitumen 6070 and more details on packing and delivery,please visit. Exp 8 penetration test of bitumen civil engineers pk. Determination of specific gravity of soil solids by.
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