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Properties Anionic Emulsions (B.S. Specifications) 

                                                  Class of anionic road emulsion
Property

Appendix

or clause

A1-60 A1-55 A1-40 A2-57 A2-50 A3 A4
Practicle charge C neg. neg. neg. neg. neg. neg. neg.

Residue on 710 um BS sieve(%(m/m), maximum)

D.1 0.05 0.05 0.05 0.05 0.05 0.05 0.05

Residue on 150 um BS sieve(g per 100 mL. maximum)

D.2 0.15 0.15 0.15 0.15 0.15 0.15 0.15
Stability to mixing with coarse aggregate(% coagulation) E.1 20 to 80 20 to 80 20 to 80 40 40 5 5

Stability to with cement

(% coagulation)

E.2    - - - 2 2 2 -
Binder Content (%m/m), minimum) F 58 53 38 55 48 55 56
Viscosity (degrees Engler (E) at 20C * G.1 6 to 9 5 to 8 4max 8max 5 max 9 max** 8 max**
Coagulation of emulsion at low temperature H nil nil nil nil nil nil nil

Storage stability (short period test)

(inversions to clear sediment, maximum)

J.1 60 60 60 60 60 60 60

Storage stability (long period test)

(% water content difference, maximum

J.2 2 2 - 2 2 2 2

*The viscosities given in the table are suitable for use in bulk spreaders complying with BS 1707 or BS 3136 or for the use in hand operated sprayers complying with BS 3136. As a general guide, a maximum viscosity of 9E at the temperature of the spraying is considered to be suitable.

**These viscosity values are intended to serve as a guide only and other values may be agreed between the purchaser and the supplier.

Note. in special circumstances, class a1-60 emulsion with higher viscosity can be used for hand application provide that the emulsion complies with all the other requirements of this standard.

 

 

Properties Cationic Emulsions (B.S. Specifications)

                                                                     Class of cationic road emulsions
Property

Appendix

or clause

K1-70 K1-60 K1-40 K2 K3
Practicle charge C pos. pos. pos. pos. pos.

Residue on 710 um BS sieve(%m/m, maximum)

D.1 - 0.05 0.05 0.05 0.05

Residue on 150 um BS sieve(g per 100 mL. maximum)

D.2 - 0.15 0.15 0.15 0.15
Binder content (% (m/m), minimum) F 67 57 38 57 56

Viscosity (degrees Engler (E at 20)

G.1    - 6 to 9 4 max 10 max 10 max
Viscosity Redwood No.ll (s at 85) G.2 25 to 35* - - - -
Coagulation of emulsion at low temperature H - nil nil nil nil

Storage stability (short period test)

(inversions to clear sediment, maximum)

J.1 - 60 60 60 60

Storage stability (long period test)

(% water content, maximum)

J.2 - 2 - 2 2

* The viscosity range in table is intended to serve as a guide only and viscosities greater than 35s can be used provided that the emulsion complies with transverse distribution requirements of BS 1707 when sprayed in hot binder distributors complying with BS 1707.