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Testing Services

Emulsified Asphalt

Specification Compliance, Cationic Emulsions
(M208 / D2397)
Specification Compliance, Anionic Emulsions
(M140 / D977)

Saybolt Furol Viscosity (T59 / D244)
The efflux time in seconds of 60 mL of sample, flowing through a calibrated orifice, is measured under carefully controlled conditions. This time is corrected by an orifice factor and reported as the viscosity of the sample at that temperature.

Sieve Analysis (T59 / D6933)
This test method covers the degree to which an emulsified asphalt may contain particles of asphalt or other discreet solids retained on an 850 μm mesh sieve. The retention of an excessive amount of particles on the sieve indicates that problems may occur in handling and application of the material. Particles of asphalt retained on the sieveSieve Analysis often are caused by agglomeration of the dispersed phase. Storage, pumping, handling, and temperature can all contribute to the formation of particles. Contaminations from the tank, transport, or hose are other factors affecting particle formation.

Distillation of Emulsified Asphalt
(% Residue) (T59 / D6997)

This test method can be used for quantitative determination of residue and oil distillates in emulsified asphalts for specification acceptance, service evaluation, control, and research. This test method can also be used to obtain residue and oil distillate for further testing.

Residue by Evaporation of Emulsified Asphalt
(T59 / D6934)

This test may be used to indicate compositional characteristics of emulsified asphalt. Evaporation residue may also be subjected to other characterization tests. This test method for residue by evaporation tends to give an asphaltic residue lower in penetration and ductility than the distillation test method. Material may be accepted but shall not be rejected as failing to meet specifications containing requirements for determination of residue by distillation, on data obtained by evaporation. If residue from evaporation fails to meet the requirements for properties specified for residue from distillation, tests shall be rerun using the distillation test method.

Settlement and Storage Stability (T59 / D6930)
Storage StabilityThis test method is useful for determining, in a comparatively short time, the storage stability or settlement of an emulsified asphalt. It is a measure of the permanence of the dispersion as related to time, but it is not to be construed to have significance as a measure of other stability aspects involved in use.

Cement Mixing (T59 / D6935)Thermometer
This test method is used to identify or classify a slow setting, SS or CSS, type emulsion. The result of this test method indicates the ability of a slow setting emulsified asphalt to mix with a finely divided, high surface area material without breaking the emulsified asphalt.

Particle Charge Test (T59 / D244)
This test method is used to identify cationic emulsions. Positively charged particles are classified as cationic. The cationic particles will migrate to a negatively charged electrode (cathode) by means of direct current.

Demulsibility (T59 / D6936)
This test method is used to identify or classify an emulsified asphalt as “Rapid Setting” or “Medium Setting” by measuring the amount of available asphalt resulting from a specified chemical breaking of the emulsion.

Float Test of Residue (T50 / D139)
This test characterizes the flow behavior or consistency of the emulsion residue. It is one element in establishing the uniformity between shipments and/or sources of base material.

Solubility of Residue (T44 / D2042)

This test measures the portion of emulsion residue that is soluble in trichloroethylene; which represents the active cementing constituents of the asphalt.

Ductility of Residue (T51 / D113)
Trimming DuctilityThis test method provides one measure of tensile properties of the emulsion residue and may be used for specification requirements.

Elastic Recovery of Residue (T301 / D6084)
This test gives some indication of binder modification of the base asphalt or modification of the emulsion (latex polymer) by measuring the amount of recoverable elongation. The elastic recovery is influenced by the properties of the base asphalt, the amount and type of modifier used, the method used to recover the emulsion residue, as well as the Elastic Recovery Test procedure details.

Penetration of Residue (T49 / D5)
The penetration test is used as a measure of consistency. Higher values of penetration indicate softer consistency. The method used to recover the emulsion residue may have an effect on the penetration of the residue. The evaporation method tends to give an asphaltic residue lower in penetration than the distillation test method.

Ash Content of Residue (D128)
This test determines the amount of inorganic material that is present in the emulsion residue.

pH Determination

Weight per Gallon using a wt/gal cup (T59 / D6937)

Preparation of Emulsion sample (lab-mill)

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