Keywords: aging, laboratory testing, field durability, polymer modified bitumen 1. This section lists the equipment required for bitumen testing, including machines to study the rheological properties of bitumen as well as the features of bituminous emulsion.It includes solutions to perform field tests on road surface. The penetrate value difference between those test points should be in the limit as given below. 0000017559 00000 n In effect, the test is an indirect determination of high temperature viscosity and low temperature stiffness. To simulate bitumen aging in laboratory, several test methods are currently used, including RTFOT, PAV, and RCAT (Rotating Cylinder Aging Test). 0000001443 00000 n Significance of Penetration Test. The arrangement involves keeping the bitumen layer between metal plates for different combinations of loading time and temperature. Ensure that there is no oscillation happening while the needle penetrates the bitumen. 0000001639 00000 n Solubility Test on asphalt bitumen . In BS (UK) literature, the ranges start from 15 (hardest bitumen) to 450 units (softest Bitumen). in India, bitumen’s are available with penetration values varying from 20 to 450. Sieve Analysis Test Procedure and Calculation, Determination of Specific Gravity of Cement, Determination of Standard Consistency of Cement, Plate Load Test – Safe Bearing Capacity of Soil. The results obtained from the methods herein may be affected by the age of the material tested. The different grades of bitumen have been listed below & the measured penetration value can be correlated to those values. 839 32 Oven a well maintained oven is needed cable of maintaining the temperature at 110 degrees. Take an initial reading as G1 from the graduated scale. 0000011518 00000 n He is the author, editor of Civil Planets. Each test point should be conducted at 10mm away from the previous test point. It should also be 10mm inside of the container, as shown in the below picture. The sample bitumen has to be melted at 90°C which must be in uniformity & without bubbles. 10.4.2 Bitumen Extraction Test 10.4.2.1 Scope. A comprehensive literature study on road durability has indicated that the aging susceptibility of bituminous binders in surface layer is a key parameter determining the life time of an asphalt pavement. @}�U�Fu��Oj ��jIBCA��>�w�Mn��[�@���������no4O��b�{�Xc0I$ӵ���¹���=%j8z���B�_f!%!���1$�.��{w^S�]�&*�����ӻ��8t��:d;�l�)��L�4��2���|��Щ��O+��"���� (��yv��f���u���)��ϴ�#���N��Ƞ�A)- ��e5�D=%�(�����D�'R xZ̼f�E��T���8�.���>�)=^CO����J����$����C��Q6�������. 839 0 obj <> endobj The average value of the 3 test points is the Penetration value of the bitumen. 0000002457 00000 n Allow the bitumen to reach the sufficient melting point then pour that into the container & allow it to cool in the natural atmosphere up to 1 hour. 5… 0000010181 00000 n 0000005761 00000 n Extraction apparatus, consisting of a bowl and an apparatus in which the bowl may be revolved at controlled variable speeds up to 3600 revolutions per minute. Now take the final reading from the graduated scale as G2. This is a basic test for determining the grades of bitumen. The apparatus consists of an aluminum float and a … Table 401-5 Test Frequency AASHTO T 59, “Emulsified Asphalts” 2 test results per project. Ensure the grade of bitumen, whether it is safe to use in construction work. The process ����J�2@:�!�jcc�jAA%�1 �de�:p��30�;i V��00T3�1�b��4�I(�� �UM�;��,����L`Hd�b�`�`�df���zO�:�a�-;�3�0�0�3|`(f����>s�,p2X�:�� ���`x ,��e �M��A~"S� G�v� Bitumen penetrated in a semi-solid state at the temperature of 25°C by a steel needle carrying 100gm load for 5 seconds to measure the consistency & hardness of the bitumen is known as a. 0000012964 00000 n Bitumen Tests- Float Test Normally the consistency of bituminous material can be measured either by penetration test or viscosity test. H��U]o�0}ϯ����v'��J�S�Ҫv�% �u�����K��\�\��s}|�z����}�� Bitumen is very important component of many … Save my name, email, and website in this browser for the next time I comment. 10.1.1.2 Definition. Now place the container over the base of the penetrometer. Balance or scales capable of weighing the sample to an accuracy of 0.05 % of its mass. To measure the hardness, softness, and consistency of the bitumen. Now switch on the water bath & set the temperature 25°C & fill the water in the transfer tray. 0000072084 00000 n But for certain range of consistencies, these tests are not applicable and Float test is used. To simulate bitumen aging in laboratory, several test methods are currently used, including RTFOT, PAV, and RCAT (Rotating Cylinder Aging Test). INTRODUCTION The aging of bituminous binders is one of the key factors determining the lifetime of an asphalt pavement. The value of penetration is measured in 1/10 mm. Bitumen Extraction test is used to determine the amount of bitumen that is actually used as binding content in asphaltic pavement or asphaltic concrete recently laid at site. A minimum of 3 tests has to be done for the same sample at different points. 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