The softening point is the temperature at which a material softens beyond some arbitrary softness. It can be determined, for example, by the Vicat method (ASTM-D1525 or ISO 306), Heat Deflection Test (ASTM-D648) or a ring and ball method (ISO 4625 or ASTM E28-67/E28-99 or ASTM D36 or ASTM D6493 - 11 or JIS K 6863). A ring and ball apparatus can also be used for the determination of softening ...

1 bab ii pengujian titik lembek aspal dan ter (softening point of asphalt and tar in ethylene glycol (ring and ball)) 2.1. Pendahuluan Aspal adalah material termoplastik yang secara bertahap mencair, sesuai dengan pertambahan suhu dan berlaku sebaliknya pada pengaturan suhu.

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With SBS-modified bitumen, the softening point is more than adequate for roofing purposes, and the cold temperature flexibility dips below -20F (-28C). The elongation and recovery (elasticity) properties of SBS-modified bitumen are far better than other bituminous materials, as the modified bitumen acts more like the SBS rubber modifier.

Asphalt used for roads and roofing is a material that becomes softer with increasing temperature. Manufacturers and fabricators need to know the temperatures where asphalt will become soft enough to be used in construction. The softening point test will provide the temperatures needed for quality control and working temperatures during ...

The whole assembly is heated at a rate of 9 °F per min. Typical values would be 240 °F for coating grade asphalts, 140 °F to 220 °F for roofing asphalt and down to 115 °F for bituminous water proofing material. Ductility: Ductility test is conducted to determine the amount bitumen will stretch at temperature below its softening point.

1.0 Introduction 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 water or glycerine at specified ...

Procedure for Softening Point Test on Bitumen 1. Preparation of test sample Heat the material to a temperature between 75-100° C above its softening point; stir until, it is completely fluid and free from air bubbles and water. If necessary, filter it through IS sieve 30. Place the rings previously heated to a temperature approximating to that of the molten material, on a metal plate which ...

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 …

The softening point of a bituminous material can be defined as the temperature at which this bituminous material further softens after its arbitrary softness point is reached. There are various methods that are helpful in determining the softening point of a bituminous material.

Roofing Asphalt – 15 to 40 mm penetrating depth. Waterproofing bitumen – up to 100 or more penetrating depth. Bitumen should be hard enough to resist the action of loads and chemicals. h. Softening Point: Higher the softening point value, lower will be the temperature susceptibility. So, bitumen with high softening value is preferred for ...

The softening point value has particular significance for materials which are to be used as thick films such as joint and crack fillers and roofing materials. high softening point ensures that they will not flow in service. For a bitumen of a given penetration (determined at 25 C), the higher the softening point the lower the temperature ...

softening point Bitumens are viscoelastic materials without sharply defined melting points; they gradually become softer and less viscous as the temperature rises. The softening point of bitumen can be determined through the use of a ring-and-ball apparatus immersed in distilled water (30 to 80°C) or USP glycerin (above 80 to 157°C).

CONCLUSION : Softening point indicates the temperature at which binders possess the same viscosity. Bituminous materials do not have a melting point. Rather, the change of state from solid to liquid is gradual over a wide range of temperature. Softening point has particular significance for materials to be used as joint and crack fillers.

Softening Point. 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. Although it is commonly used in Europe, it is mostly used for roofing asphalts in the U.S. Basically, two horizontal disks of bitumen, cast in shouldered brass rings (Figure 1), are heated at a ...

Softening Point Test Procedure. The ring and ball method is widely used for determining the softening point of bituminous material. The purpose behind performing the ring and ball test is to determine the temperature at which a given material will soften. Softening point is the temperature at which the bituminous binders have an equal viscosity ...

D 140 Practice for Sampling Bituminous Materials4 D 3461 Test Method for Softening Point of Asphalt and Pitch (Mettler Cup-and-Ball Method)5 E 1 Specification for ASTM Thermometers6 3. Summary of Test Method 3.1 Two horizontal disks of bitumen, cast in shouldered brass rings, are heated at a controlled rate in a liquid bath while each supports ...

The softening point of bituminous materials is determined by the Ring and Ball device. Purpose of the ring ball test To determine the softening point of the bitumen / tar appliance The ring and spheres is constituted by the following: steel balls â € "two numbers each …

Penetration, softening point, ductility, viscosity, flash point, fire point, loss on heating, specific gravity, stability, and flow were carried out on unmodified, modified bitumen and asphalt ...

Softening point test Ring and Ball Temperature at which the bitumen attains a particular degree of softening Brass Ring containing test sample Suspended in liquid (water, glycerin etc.,) Heating @5C/Min Softening point denotes the temp at which bitumen touches the base metal plate. 25.

Softening point of Bituminous material The softening point of Bituminous material is the temperature at which the material attains a particular degree of softening. As per IS: 334-1982, it is the temperature (in ⁰C ) at which a standard ball passes through a sample of bitumen in a mold and falls through a height of 2.5 cm, when heated ...

4.1 Asphalt and pitch do not go through a solid-liquid phase change when heated, and therefore do not have true melting points. As the temperature is raised, they gradually soften or become less viscous. For this reason, the determination of the softening point must be made by an arbitrary, but closely defined, method if the test values are to be reproducible.

DETERMINATION OF SOFTENING POINT STANDARD IS: 1205 – 1978. DEFINITION Softening point is the temperature at which the substance attains a particular degree of softening under specified conditions of test. APPARATUS Standard Ring and Ball Apparatus. Steel balls 2 No, each 9.5mm in diameter and weighing 3.5 + 0.05 grams.

Testing of Bituminous Materials for Road Building and Related Purposes; Determination of Softening P...

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2- Softening point is the temperature at which the bituminous binders have an equal viscosity (i.e. the consistency of all the grades will be same at the softening point e.g. if two samples have softening points of 40 °C and 80 °C respectively, both will have the same consistency at their softening point.).

The test gives an idea of the temperature at which the bituminous materials attain a certain viscosity. Bitumen with higher softening point may be preferred in warmer places. The softening point should be higher than the hottest day temperature, which is anticipated in that. area otherwise bitumen may sufficiently soften and result in bleeding ...

Type 1 asphalt is required to have a minimum softening point of 60°C (140°F) and is intended for use on built-up roofs with slopes less than or equal to 1:16 or 6.2% slope (Consult local provincial requirements as minimum requirements may differ ex. Alberta Roofing Contractors Association (ARCA) specifies a 1:25 or 4% slope). Type 1 asphalt ...

A) Materials of softening point below 80oC: i) Assemble the apparatus with the rings, thermometer and ball guides in position. ii) Fill the beaker with boiled distilled water at a temperature 5.0 ± 0.5 oC per minute. iii) With the help of a stirrer, stir the liquid and apply heat to the beaker at a temperature of 5.0 ± 0.5 oC per minute.

Softening point of bitumen = (A + B)/2 = (46 + 47)/2 = 46.5 degree centigrade. Significance of Softening point test of bitumen. The softening point of bitumen used in the pavement construction varies between 35° to 70°.It indicates how susceptible the bitumen with respect to the variation of temperature.

Bitumen is viscous elastic material without sharply defined melting points. They gradually become softer and less viscous as the temperature rises. This is the reason why the softening point of bitumen is determined. Softening point is not a melting point, bituminous material …

Softening Point Vs Melting Point The softening point is the temperature at which a material softens beyond some arbitrary softness. [1] It can be determined, for example, by the Vicat method (ASTM-D1525 or ISO 306), Heat Deflection Test (ASTM-D648) or a ring and ball method (ISO 4625 or ASTM E28-67/E28-99 or ASTM D36 or ASTM D6493 - 11).

asphalt shall have a minimum softening point (Ring and Ball) of 57 degrees C (135 degrees F) when tested in accordance with AASHTO T 53. The blended asphalt mixture when combined with aggregate and mineral filler shall have the following characteristics: 1. Be capable of filling up to 13 millimeters (1/2 inch) wheel ruts in one pass. 2.

Penetration value of different types of bitumen used in road construction range between 20 to 225. However, 30/40 and 80/100 grade bitumen is more common for road construction depending upon the type of construction and climate conditions. In hot 30/40 bitumen is preferred. The value of temperature effects the use of the bitumen.