Thickening bitumen emulsions - for road - surfacing by adding inverse emulsion of salt in light petroleum

摘要

Controlled raising of viscosity of road-surfacing bitumen emulsions by adding before homogenisation a small amount (0.05-0.3 kg per 100 kg. bitumen) of an inverse emulsion of NaCl in light petroleum (prepared in advance by homogenising an aq. NaCl soln. with a cut-back or fuel-oil). Viscosities of 4-11.5 degrees Engler may be attained.