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Apparatus for the bitumen penetration test (25 C) 100g Asphalt Cement (25 C) Asphalt Cement 100g Start After 5 seconds Penetration in units of 0.1 mm. Penetration of Bituminous Materials 5 RESULTS The results are very sensitive to test conditions and bitumen specimen
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Penetration. An empirical measure of asphalt consistency. Based on this test, asphalt cements have been classified into standard grades. In testing, a container of asphalt cement is heated to the standard test temperature, 25 o C, in a temperature controlled water bath. A needle is allowed to bear on the surface of the asphalt cement for 5 seconds.
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Asphalt Cement Performance Elastic Solid True Liquid Viscoelastic Solid Viscous Liquid Thermal Cracking Minimum Service Temp ... Penetration Test 0 seconds 5 seconds 100 g 77oF Penetration 100 g Penetration Number = Penetration in tenths of a millimeter. CIVL 3137 18 Asphalt Penetrometer.
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(Fig 8.1) Penetration 8.2.2. Consistency It describes the degree of fluidity of asphalt cement at any temperature. Since asphalt is a thermoplastic material, so its consistency varies with temperature. 8.2.3.
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Pavement Material Lab Penetration Test 4th February 2015 6/19 Asphalt Consistancy and grade (cont.) Obviously, the higher the penetration, the softer the asphalt cement. Therefore, a 40-50 pen grade is the hardest grade, and a 200-300 pen grade is the softest grade. 7.
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Penetration grading quantifies the following asphalt concrete characteristics: Penetration depth of a 100 g needle 25 ° C (77 ° F) Flash point temperature. Ductility at 25°C (77°F) Solubility in trichloroethylene. Thin film oven test (accounts for the effects of short-term aging that occurs during mixing with hot aggregate) Retained ...
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History of Asphalt Grading Systems 3 • Bowen of Barber Asphalt Co. invented penetration test in 1888 • Many modifications of No. 2 sewing needle (tip truncated) • Specified load, time, and temperature • ASTM Committee D-4 adopted penetration test (1903) • Non-uniformity in application of penetration values by states Penetration Grading
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Procedure of Penetration Test on Bitumen: In the standard test condition, a standard needle of a total load of 100 g is applied to the surface of an asphalt or Liquid bitumen sample at a temperature of 25 °C for 5 seconds. The amount of penetration of the needle at the end of 5 seconds is measured in units of 0.1 mm (or penetration unit).
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•THE PENETRATION test, performed at 77 F, 100 g, 5 seconds, has been used for over 40 years on original asphalt cements, on residues from oven loss tests, or on recovered asphalts from hot-mixed pugmill operations to measure the hardening effect of aging on asphalt cement. However, this test cannot be depended on now in many
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Equipment for Penetration test . A penetrometer consisting of a needle assembly with a total weight of 100 grams and a device for releasing and locking needle in any position. To read the penetration value, a graduated dial is attached as shown in fig.1.Penetration value can be read with this dial up to 0.1 mm.
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ASPHALT TESTING LABORATORY PENETRATION OF BITUMINOUS MATERIALS OBJECTIVES: ... To prepare standard specimens of asphalt concrete for measurement of stability and flow in the Marshall apparatus and to determine density, percentage air voids, and percentage of aggregate voids filled with binder.
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Aside from chewing, the penetration test is the oldest asphalt test. In 1888, H.C. Bowen of the Barber Asphalt Paving Company invented the forerunner to the penetration test, the Bowen Penetration Machine (Halstead and Welborn, 1974 [1]).It's basic principle, and the basic principle of the penetration test, was to determine the depth to which a truncated No. 2 sewing needle penetrated an ...
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D2872 Test Method for Effect of Heat and Air on a Moving Film of Asphalt (Rolling Thin-Film Oven Test) D3381/D3381M Specification for Viscosity-Graded Asphalt Binder for Use in Pavement Construction. D6373 Specification for Performance Graded Asphalt Binder. D7553 Test Method for Solubility of Asphalt Materials in N-Propyl Bromide
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first described. As great a difference as 15 points in one asphalt cement 1 Reeve, C. S. Effect ofdiameter bitumen holder on the penetration test. In Proc. Internat. Assoc. Testing Materials (6th Cong. New York 1912), v. 2, no. n, Paper 25, 4 p. 1912. 17211°—16 3
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