Ring and ball test

Part 1 Delta ring and ball test Part 2 Bitumen number... 

EN XXX Tests for (bituminous bound fillers) filler aggregate (in preparation). Part 1 Delta ring and ball test . 

Delta ring and ball test of filler aggregates CEN EN 13179-1 (2000) Yes —... 

It is useful to measure the melting point of the solid resins. This can be done either by the ring and ball technique or by Durrans mercury method. In the latter method a known weight of resin is melted in a test tube of fixed dimensions. The resin is then cooled and it solidifies. A known weight of clean mercury is then poured on to the top of the resin and the whole assembly heated, at a fixed rate, until the resin melts and the mercury runs through the resin. The temperature at which this occurs is taken as the melting point. 

In 1997, Lenk et. al. described a thermoplastic binder system consisting of polyethylene, paraffin, wax and surfactants p enk 97]. Various binder components for injection molding, extrusion and hot molding were tested for the fabrication of bars, tubes, discs, rings and balls of SiC-platelet-reinforced SiC composites. Good alignment of the SiC platelets in the matrix made it possible to improve the densification of the composite. 

Ring-and-ball softening point testing for oxidised bitumens are carried out in glycerol, as the values typically are above 80°C. 

The consistency of the bitumen and the bituminous binders at elevated temperature is empirically determined with the softening point test, also known as a ring and ball (R B) test. Along with the penetration test, the softening point test is used for grading the oxidised bitumens. 

ASTM D 36/D 36M. 2012. Standard test method for softening point of bitumen (ring-and-ball apparatus). West Conshohocken, PA ASTM International. 

Penetration (ASTM-D5) and ring and ball softening point tests (ASTM-D36) carried out on synthetic binders and commercial bitumen are shown in Table 10.2. 

ASTME 28-27 Standard Test Method for Soflening Point of Resins by Ring and Ball Apparatus, pub. Sept. 1997. 

D 36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus) ... 

This test method covers the determination of the softening point of bitumen in the range from 30 to 157 C (86 to 315 F) using the ring-and-ball apparatus immersed in distilled water (30 to 80 C), USP glycerin (above 80 to 157 0, or ethylene glycol (30 to 110°Q. 

Record for each ring and ball the temperature indicated by the thermometer at the instant the bitumen surrounding the ball touches the bottom plate. Make no correction for the emergent stem of the thermometer. If the difference between the two temperatures exceeds TC (2 F), repeat the test. 

Tests for Bituminous and Semisolid Materials. The most common tests for asphaltic substances are the ductility, penetration, ring-and-ball softening points (E28), and specific-gravity tests. The ductility (D113) of an asphalt is a measure of its capacity to elongate or stretch and is an indication of the ability of the material to flow and thereby mend a rupture in the surface of the material. A briquette of the asphalt... 

Additional comments Relative humidity and air flow through the system must be controlled within specified limits. The test ring and test ball must be properly prepared before use. Improper preparation and contamination can impact test results. Relative humidity of air in the system must be greater than 30%. 

This test involves the deformation of circular, punched sheet metal specimens into conical cups by means of a 12.5-27-mm (0.5-l.l-in.)-diameter ball and tooling of the type shown in Fig. 25 [65]. The ball size selected depends on the sheet thickness. Lubrication is provided on the specimens facing the die side only, because lubrication on the punch side leads to tilting of the specimens. Specimens are centered and clamped by the hold-down ring and deformed to fracture by the punch. 

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