AS 2341.26:2020 Methods of testing bitumen and related roadmaking products Method 26: Determination of sieve residue.
high binder content bituminous emulsion
bituminous emulsion in which the percentage by mass of the bituminous binder in the emulsion is significantly greater than 60 %
polymer modified bituminous emulsion
bituminous emulsion which contains a synthetic polymer or natural latex
Note 1 to entry: These can be produced either by emulsifying a previously manufactured polymer modified binder, or adding emulsified latex to the bituminous emulsion during emulsion manufacture.
indicates the existence of an option
indicates that a statement is mandatory
indicates a recommendation
4 Principle
A bituminous emulsion is strained through a weighed sieve to quantify the presence of coarse binder particles that may indicate adverse storage, handling or application effects.
5 Apparatus
The following apparatus is required:
(a) Balance — A balance of at least 200 g capacity, readable to 0.001 g, with a limit of performance not exceeding 0.003 g.
(b) Sieve — A sieve, conforming with Iso 3310-1, fitted with a wire mesh having an aperture of either 150 pm or 710 pm. The frame of the sieve should be about 100 mm diameter and 40 mm deep.
NOTE 1 A 710 urn sieve should be used if a high binder content bituminous emulsion or a polymer modified bituminous emulsion is tested.
(c) Sieve tray — Watch glass, or circular metal dish with raised edges, with a diameter larger than the diameter of the sieve used in the test. The sieve tray should be of sufficient size so that the sieve can be placed stably on the sieve tray. The sieve tray should also be of suitable size so that it can be placed on the balance and weighed.
(d) Container — Glass conical flask or beaker, or a plastic disposable cup, of suitable size to weigh the bituminous emulsion sample prior to passing it through the sieve.
(e) Surfactant solution — An aqueous solution of surfactant compatible with the emulsion.
NOTE 2 If available from the supplier, the surfactant solution that was used to produce the emulsion should be used in the test. If such a solution is not available, then an aqueous solution containing 1 % w/w of cetrimide (a mixture of alkyltrimethylammonium bromides) in 0.1 mol/L HC1 has been found to be suitable for testing cationic bituminous emulsions. An aqueous solution containing a suitable anionic surfactant has been found to be suitable for testing anionic bituminous emulsions.
(1) Plastic wash bottle — A wash bottle to store the surfactant solution.AS 2341.26 pdf download.