Rechercher

The procedure includes drying a sufficient quantity of the sample by heating, allowing to cool to room temperature, adding distilled or deionized water to the cleaned, dried and weighed pyknometer containing 10 g of the dried sample until it is completely filled, displacing air adhering to the test portion, drying the outside of the pyknometer, reweighing the pyknometer and its contents, emptying…

The procedure includes examining a small quantity of the sample under the microscope and, if grains of different colours or diameter are present, selecting a few grains of each, placing the selected grains between two glass microscope slides and, whilst applying pressure, slowly moving one slide over the other with a reciprocating motion for 10 s, examining the glass surfaces for scratches. The…

The procedure includes weighing a test portion of approximately 100 g into a container, placing the container with the test portion in an oven previously adjusted to 110 °C, leaving for at least 1 h, transferring the container to a desiccator, allowing to cool to room temperature, reweighing the container with the dried test portion, determining the mass of the dried test portion. Annex A gives…

The procedure includes weighing a test portion of 100 g of the sample, adding 100 ml of the conductivity water, shaking, allowing to stand, filtering if necessary, transferring sufficient of the liquid to fill the conductivity cell of the conductivity-measuring bridge, and measuring the conductivity of the solution. Annex A gives information on the international standards series for non-metallic…

The procedure includes weighing a test portion of 100 g of the sample, adding 100 ml of water, shaking, allowing to settle, filtering if necessary, adding sulfuric acid to 25 ml of the solution, diluting, titrating the solution with silver nitrate, and noting the end point. Annex A gives information on the international standards series for non-metallic blast-cleaning abrasives ISO 11126 and ISO…

Specifies a test method for the determination of particles with cracks, laminations, voids and shrinkage, of defectively shaped shot, grit and cylindrical particles, of microstructure using a microscope. Annex A gives information on the international standards series for metallic blast-cleaning abrasives ISO 11124 and ISO 11125.

Specifies a test method for the determination of particles with cracks, laminations, voids and shrinkage, of defectively shaped shot, grit and cylindrical particles, of microstructure. Annex A gives information on the international standards series for metallic blast-cleaning abrasives ISO 11124 and ISO 11125.

Specifies a test method for the determination of the level of free moisture present determined by measuring the mass lost on heating. Annex A gives information on the international standards series for metallic blast-cleaning abrasives ISO 11124 and ISO 11125.

Specifies a test method for the determination of particle size distribution by sieving. The procedure includes weighing out a test portion of 100 g of the sample, placing the test portion in the top sieve of a set of test sieves (including all the sieves listed against the grade under test in the appropriate part of ISO 11124) with the largest-aperture sieve on the top and progress to the…

Specifies a test method for the determination of the Vickers hardness (using a test force of 9,807 N, i.e. HV 1, when testing particles with a diameter greater than 0,5 mm, and a test force of 4,904 N, i.e. HV 0,5, when testing particles with a diameter of 0,3 mm to 0,5 mm). The method is not recommended for the testing of particle sizes below 0,3 mm. The purpose is to establish the soundness of…