This test is done to determine the softening point of asphaltic bitumen and fluxed native asphalt, road tar, coal tar pitch and blown type bitumen as per IS: 1205 – 1978. The principle behind this test is that softening point is the temperature at which the substance attains a particular degree of softening under specified condition of the test.
Introduction: The Softening Point Test is the temperatures at which the bitumen that is placed in a ring, soften and there for allow a ball with a weight of 3.5g to fall downwards a distance of 1inch"2.5cm".
4. Softening Point Test INTRODUCTION: Softening point: is that degree of temperature in which the asphalt will start to change from solid to liquid state under specific situation.
Determining Penetration of Bitumen ... Soften the bitumen above the softening point (between 75 and 100 o C). Stir it thoroughly to remove air bubbles and water. ii) Pour it into a container to a depth of at least 15mm in excess of the expected penetration.
Softening point test Softening point denotes the temperature at which the bitumen attains a particular degree of softening under the specifications of test. The test is conducted by using Ring and Ball apparatus. A brass ring containing test sample of bitumen is suspended in liquid like water or glycerin at a given temperature.
Softening point is the temperature at which the substance attains a particular degree of softening under specified conditions of test. ... having softening points below 80 0C and pure glycerin for material having ... Softening point test for bitumen. REPORT
Sample material is heated to a temperature between 75° and 100°C above the approximate softening point until it is completely fluid and is poured in heated rings placed on the metal plate. To avoid sticking of the bitumen to metal plate, coating is done to this with a solution of glycerin and dextrin.
POLYMER MODIFIED BITUMEN: LABORATORY EVALUATION, CONSTRUCTION GUIDELINES AND FIELD EXPERIENCE ... characteristics of polymer modified bitumen. INTRODUCTION To meet the demands of technological and demographic ... kinematic viscosity at 135 C (275 F), softening point, etc., while valuable, cannot effectively characterize modified binders because ...
Softening point and Penetration Index of bitumen from parts of Southwestern Nigeria Olugbenga A. Ehinola, Olugbenga A. Falode and G. Jonathan ... Key words: Nigeria,softening point, bitumen, penetration index 1. INTRODUCTION Bitumen is an oil based non-crystalline solid or viscous
· ASTM Ring and Ball Softening Point Test this is the astm version of the test, the water is not stirred during this test, in the British Standard version the water in the beaker is stirred. This ...
The softening point is defined as the temperature at which a bitumen sample can no longer support the weight of a 3.5-g steel ball, It will give a significant indicator regarding the temperature susceptibility, higher softening point means lower temperature susceptible asphalt
The softening point is reported as the mean of the temperatures at which the two disks soften enough to allow each ball, enveloped in bitumen, to fall a distance of 25 mm (1.0 inch) (AASHTO, 2000 ).
Standard Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)1 This standard is issued under the ﬁxed designation D 36; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
My objective in this experiment is to determine the softening point of asphaltic bitumen and fluxed native asphalt, road tar, coal tar pitch and blown type bitumen.This experiment is done by …
· The softening point is the temperature where the needle penetration reaches the specified distance. Another type of softening test is the ring-and-ball test. A ball with a known weight is placed on a sample that is heated at a specified rate.
Softening point has specific implication for materials to be utilized to flow at the time of service. Greater the softening point, minor the temperature vulnerability. Bitumen with greater softening point is favored in warmer places.
Keywords: Rheology, viscocity, Sasobit wax, penetration and softening point. 1. INTRODUCTION Bitumen is a black sticky material natural derived from the fractional distillation of crude oil, and is particularly suitable as a binder for road construction. Normally, at room temperature bitumen is soft with a density of 1 g/cm3,
The softening point of bitumen or tar is the temperature at which the substance attains particular degree of softening. As per IS: 334-1982, ASTM E28-67 or ASTM D36 or ASTM D6493 – 11, it is the temperature in ºC at which a standard ball passes through a sample of bitumen in a mould and falls through a height of 2.5 cm, when heated under ...
bitumen is referred to as 70 pen if the penetration is 7mm. Softening point test To measure the softening point a small sample is melted, cast in brass ring and cooled and then progressively re-heated until it deforms (i.e. "flows") by a given amount. 12 BINDER MIXTURES. Cutbacks This term is used to describe a mixture
For a bitumen of a given penetration (determined at 25 oC), the higher the softening point the lower the temperature sensitivity Research has shown that, for conventional paving grade bitumens, the Ring-andBall softening point temperature is the same as that which would give a penetration of 800 d-mm.
An Introduction to Bitumen. Listed in Asphalt. Related Items. More on Total Bitumen. A66 Eden Valley Resurfacing Scheme. ... In Europe, bitumens are specified through 'softening point' and 'penetration', to give a comparable and scientific point of identification.
EVALUATION OF VALIDITY OF CONVENTIONAL TEST METHODS Dr Dariusz SYBlLSKl Road and Bridge Research Institute, Warsaw, Poland ... testing of polymer-bitumens with discussion of validity of conventional test methods when applied ... For a polymer-bitumen of Softening Point 60°C its
Home > Asphalt > Asphalt Binder Testing > Softening Point Softening Point. H-1569.XX Softening Point Apparatus. Simple Beaker set-up for Softening Point Testing. H-1595 Softening Point Apparatus Set w/ Burner. Ring and ball method softening point apparatus with gas burner, beaker and stand. H-1596.XX Softening Point Apparatus Set w/ Hotplate
INTRODUCTION The bitumen-rubber technology was brought to the attention of Sastech and Tosas in May 1981 during discussions with the Arizona ... while increasing the softening point and viscosity. The oil ... Bitumen-rubber Its introduction and development in South Africa - 10 - 4.4 Site quality control
It was observed that aging increased the viscosity, decreased the binder penetration and increased the softening point of the modified bitumen. It could be concluded that aging increases hardness, thereby decreasing the penetration and increasing the binder softening point and viscosity. Introduction.
The last two decades in particular have seen an increase in the number of academic groups studying polymer-modified bitumen and correspondingly the peer-reviewed literature in the field has increased. Initially, studies on polymer modified bitumen focused more on engineering and empirical measurements, e.g. ageing and softening point.
Bitumen starts flowing at it's softening point so if the softening point of a particular bitumen is exceeded by the atmospheric temperature at one point or the other in a particular climate, the bitumen becomes unsuitable for road construction in that climate.
SOFTENING POINT OF BITUMEN. Reference Standard: ASTM (1998).ASTM D36-95, Millard, R.S (1993) INTRODUCTION Unlike some substances for example water which changes from solid to liquid at 0 bituminous materials do not have a definite melting point.
INTRODUCTION. Bitumen is an oil based non-crystalline solid or viscous ... .For proper planning of extraction techniques for heavy crude oil such as Nigeria bitumen or oil sand, softening point is ...
The Civil Engineering Center 1 Visit for more lecture notes and E-book! ... To determine the softening point of a bitumen sample using the ring and the ball apparatus. Standard: ASTM D36-76 ... The Civil Engineering Center 5 Visit for more lecture notes and E …
D3461-18 Standard Test Method for Softening Point of Asphalt and Pitch (Mettler Cup-and-Ball Method) Mettler apparatus~ asphalt~ pitch~ ... Note 1: If the softening point of asphalt by this Mettler cup-and-ball method fails to meet specified requirements, ... D36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)