· The point at which the bitumen or the tar is softened is the accurate temperature substance achieves specific degree of softening. As per IS: 334-1982, it is the precise temperature in ºC at which an average …

Type 1 asphalt is the softest type of mopping asphalt with softening points between 68°C and with penetration at 25°C between 18 and 50 mm /10. It is for roof slopes of less the j in. per ft (0.25 per 12). It is also called dead level asphalt and is not commonly used today because of the porosity of the fiber-glass ply felts and the industry ...

 · Objective: determine the softening point of bitumen by means of the Ring-and- Ball apparatus. Theory: Asphalt (called bitumen in Europe) is a very complex combination of high molecular weight organic compounds containing a relatively high proportion of hydrocarbons having carbon numbers greater than C25.o Asphalts are comprised …

The softening point is determined by the ring and ball apparatus. According to IS: 334-1982, it is the temperature (in Celsius) at which a standard ball passes through a sample of …

Now, place the frame in water and leave it for 15 minutes. After 15 minutes take steel ball which are previously cooled at the tempreture at 5 degree centigrade and placed on the top of the ball guide. ... Softening point of …

The softening point is calculated as the average of the temperatures at which the two discs soften sufficiently for each bitumen-encased ball to fall 25 mm. 2 OBJECTIVE To …

The softening point (SP) and penetration index (PI) of bitumen from parts of southwestern Nigeria are important properties needed for better design and optimization of the upgrading process of Nigerian bitumen. This study was carried out to design and fabricate a cost effective and efficient softening point tester to classify bitumen into grades.

Bitumen penetration grade 60/70 means the penetration value is in the range between 60 to 70 mm/10 at standard test conditions which commonly used as a paving grade. This bitumen is produced through aeration on …

winqufobi/softening-point-test-for-bitumen-pdf-download. winqufobi/softening-point-test-for-bitumen-pdf-download. By winqufobi • Updated a year ago

softening point of bitumen polytechnic merlimau, melaka civil engineering department highway laboratory highway laboratory – group d page 1 softening point of bitumen softening point of bitumen no content page 1 introductions 2 2 theory & objective 3-4 3 apparatus 5-6 4 procedure 7-8 5 result and calculation. 9 6 disscussion 10 7

2  · Meanwhile, make a combination of glycerol and dextrin and apply it on the glass surface. It has to be done to avoid the affix of bitumen in the plate. Now place the ring & pour the bitumen carefully into the ring & allow it to cool up to 30 minutes in a natural atmosphere. Now the bitumen sample is ready to start the procedure of softening ...

Softening point essentially is the temperature at which the bituminous binders have an equal Viscosity. Bitumen with higher softening point may be referred in warmer place. …

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. …

Softening point is defined as the temperature at which bitumen softens beyond some arbitrary softness, i.e., bitumen softens and sags down about 25mm below the weight of …

 · Bitumen softening point testing is usually performed by the ring and ball method (R&B in short). Two bitumen samples placed in metal rings are heated in a controlled manner in a liquid (distilled water for the expected R&B from 28 to 80 °C, glycerine for the R&B from 80 to 150 °C), placed in a glass beaker, with each bitumen-filled ring ...

ATLASTIC 50 is a textile-reinforced, hot-melt asphaltic membrane with a ball-and-ring softening point of 250° to 275°F (121° to 135°C). Take no more than 2 h to heat an …

For a bitumen of a given penetration (determined at 25 º C), the higher the softening point the lower the temperature sensitivity Research has shown that, for conventional paving grade bitumens, the Ring-and-Ball softening point temperature is the same as that which would give a penetration of 800 d-mm.

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. …

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). 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 ...

Softening point test. The consistency of a penetration grade or oxidized bitumen can also be measured by determining its softening pOint1157'1581. In this test, a steel ball (weight 3.5 g) is placed on a sample of bitumen contained in a brass ring that is then suspended in a water or glycerin bath. The apparatus is shown in Fig. 7.2.

The point at which the bitumen or the tar is softened is the accurate temperature substance achieves specific degree of softening. As per IS: 334-1982, it is the precise temperature …

Softening Point. The softening point falls in with the temperature at which the binder softens beyond a fixed limit (a deformation of 25mm under the weight of a steel ball). The apparatus to measure this property is the Ring and Ball apparatus, available both in manual and automatic configurations. It is able to control the temperature gradient ...

 · Because the softening point is needed to establish the uniformity of shipments or sources of supply, it is frequently used to classifying bitumens. One of the most common ways to determine an asphalt's softening point is through the use of a ring-and-ball apparatus. During this test, steel balls are placed on top of bitumen disks within a bath.

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 …

PMBs, S-shaped curve is obtained when softening point (SP) is plotted against the polymer concentration [31]. Fig. 9 shows the S- curve obtained when A (80-100) base bitumen …

Softening Point of Bitumen. The two standards ASTM D3461 (Mettler cup‐and‐ball) and ASTM D36 (ring‐and‐ball) for softening point determination of bitumen, or asphalt, were compared. The tests revealed that the results for pure bitumen specimens are comparable. Larger deviations are however obtained with wax and polymer modified bitumen ...

 · The rheological properties of the primary and modified asphalt were measured, which included the measurement of penetration [21], ductility [22] and softening point [23] as well as the calculation ...

Download scientific diagram | Softening point vs. SBS content in A(80-100) bitumen. from publication: Thermal degradation of SBS in bitumen during storage: Influence of temperature, SBS ...

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. However ...

Gilsonite asphalt grade is natural occurring hydrocarbon substances characterized by a high softening point (above 110° C) in the class known as asphaltite. They are mined much like other minerals and sold essentially in their native state. They are fully compatible with asphalt and have long been known as asphalt hardeners and reinforcing agents.