BS EN 12274-2 is the second part of the BS EN 12274 series of standards that discusses slurry surfacing. BS EN 12274-2 specifies test methods for determining the residual binder content of samples of slurry surfacing mixtures.
BS EN 12274-2 describes the method for preparing the specimens and for removing water from the samples before carrying out the extraction test.
Note1: The method described in BS EN 12274-2 needs to be used only to determine the quantity of binder and not to investigate its quality.
Note2: BS EN 12274-2 applies to slurry surfacing to be used in surface layers for roads, airfields and other trafficked areas.
BS EN 12274-2 on the determination of residual binder content of slurry surfacing is useful for:
The amount of binder added to the slurry mixture cannot be too excessive or too little. Enough binder content will help in the complete coating of the aggregates and the void within the slurry mixture is sealed up.
BS EN 12274-2 provides test methods for determining the quantity of residual binder present in the sample. This will help in adding the right amount of content to the slurry mixture which will ensure the durability and stability of the slurry surfacing mixtures.
BS EN 12274-2:2018 supersedes BS EN 12274‑2:2003, which is withdrawn.
BS EN 12274-2:2018 includes some technical changes with respect to BS EN 12274‑2:2003.
These include:
EN 12274-2:2018