BS EN 1431:2018 pdf download.Bitumen and bituminous binders – Determination of residual binder and oil distillate from bitumen emulsions by distillation
1 Scope
This European Standard specifies a method for the quantitative determination of residual binder and oil distillate in bituminous emulsions.
The method can also be used to obtain residue and oil distillate for further testing.
NOTE The properties of the material recovered in the test are not necessarily the same as those of the original
materials from which the emulsion was produced, especially for polymer modified bitumens, cut-back and fluxed bituminous binders.
WARNING一The use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 58, Bitumen and bituminous binders一Sampling bituminous binders
EN 573-3, Aluminium and aluminium alloys一Chemical composition and form of wrought products一Part 3: Chemical composition and form of products
EN 1425, Bitumen and bituminous binders一Characterization of perceptible properties
EN 12594, Bitumen and bituminous binders一Preparation of test samples
ISO 565, Test sieves一Metal wire cloth, perforated metal plate and electroformed sheet一Nominal sizes of openings
6 Apparatus
Usual laboratory apparatus and glassware, together with the following:
6.1 Aluminium alloy still (see Figure 1) or iron still, (241+5) mm in height by (100+2) mm external diameter with a (3,2+0,2) mm thickness wall. Lid (see Figure 1) of suitable dimensions to allow two temperature measuring devices [6.6) to be inserted through a stopper and an outlet of suitable diameter to enable connection tube to be connected also through a stopper.
6.2 Heating system – Equipment needed when using a gas burner Ring gas burner with a (125士5) mm inside diameter, having holes on the inner circumference and having three appropriate spacers or guide pins, to ensure centring of burner around the still (see Figure 2).
6.3 Heating system – Equipment needed when using electrical heating If the purpose of the test procedure is only to determine the residual binder and oil distillate content, without the determination of residual binder properties, the ring gas burner may be replaced by an electric ring heater with a capacity between 600 W and 1 000 W and a width of (50+15) mm which can be tight-fitted around the aluminium alloy still (see Figure 3). The power supplied to the heating ring shall be controllable and preferably adjustable through a temperature control unit taking as a reference the temperature indicated by the lower temperature measuring device (see 8.3). NOTE 1 The use of an electric ring heater is limited to the determination of the residual binder and oil distillate content since so far there is no evidence that both methods lead to the same residual binder properties. NOTE 2 All tolerances in 6.1, 6.2 and 6.3 and shown on Figure 1 and Figure 2 are production tolerances for the manufacturers of the test equipment. No calibration/verification concerning these tolerances is necessary in Quality Control.
BS EN 1431:2018 pdf download
