BS 9228:2021 - Page 2

Recycling of roads and other paved areas using bitumen emulsion, foamed bitumen or hydraulic material. Materials, production, installation and product type testing. Specification. Specification for materials, production, installation and product type testing | Status: Current

1 Scope This British Standard specifies requirements for materials processed with either bituminous emulsion, foamed bitumen or hydraulic material, including their design and composition, production, installation and performance testing. This British Standard includes requirements for mixtures prepared using bituminous binders that may also contain hydraulic material. This British Standard describes a number of processes and methods by which existing material in the road or other paved areas is either processed in-situ or uses recycled material processed ex-situ.

NOTE 1 BS 9227 specifies requirements for the production, installation, testing and conformity of hydraulically bound materials (HBM) conforming to BS EN 14227 Parts 1 to 5 for pavement applications, whether constructed by the ex-situ or in-situ methods. It also includes requirements for preliminary work at the laying site, needed to ensure that the substrate is fit to receive the HBM. BS 9227 includes only materials conforming with BS EN 14227 Parts 1 to 5 whether from recycled or virgin materials. For the recycling of pavements, TRL Report TRL 611 [1] can be used.

NOTE 2 BS EN 13108-31 specifies requirements for asphalt concrete using aggregate conforming to BS EN 13043 and bituminous emulsion for use on roads, and other trafficked areas.

NOTE 3 Guidance on the selection and use of cold recycled materials is given in Annex A.