BS 434-2:2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Emulsion types
5 Handling, storage and safety
6 Suitability of treatments and processes
7 Surface dressing of carriageways
8 Tack coat and bond coat emulsions
9 Slurry surfacing
10 Retread
11 Deep recycling
12 Footway and cycleway construction and maintenance
13 Patching and velocity patching
14 Permanent cold lay surfacing materials (PCSMs)
15 Sealing and curing of cementitious materials
16 Stress absorbing membrane interlayer (SAMIs)
17 Miscellaneous uses
Bibliography
List of tables

Provides recommendations and guidance on the general usage of cationic bituminous emulsions on roads and other paved areas.

This part of BS434 provides recommendations and guidance on the general usage of cationic bituminous emulsions on roads and other paved areas. The emulsions covered conform to BS434‑1, or BSEN13808 (modified and non-modified), or are proprietary emulsions.

This British Standard provides guidance on where the various processes using bituminous emulsions are suitable for use and indicates where suitable design procedures may be found. Advice is also given on those situations in which the processes are unsuitable or marginally suitable.

Where there is an option, performance or outcome specifications have been used rather than input or recipe specifications. This follows the general approach adopted for European Standards and the general move towards performance specifications by many specifiers.

Anionic emulsions are covered only for exceptional circumstances. Cationic emulsions have been specified for most purposes, although in some cases an anionic alternative may be used.