Viscosity properties of bimodal bitumen emulsions: new approach
MetadataShow full item record
The emulsions used in the manufacture of half warm asphat should contain very little water in their formulation. Conventional monomodal emulsions have a maximum dispersed phase concentration, ϕ, of 0.69. Recent research in this field is focused on the development of concentrated emulsions, ϕ = 0.70-0.74, or highly concentrated emulsions, ϕ >0.74. The concentrated or highly concentrated emulsions have little water in their formulation, <30%, but consequently have very high viscosities. This article summarizes the main conclusions related with the design, formulation and viscosity of bimodal concentrated bitumen emulsions. To formulate a bimodal emulsion is necessary to firstly manufacture two monomodal emulsion with a controlled drop size distribution from 1 and 5 μm respectively. These emulsions should be prepared with a system able to control the final drop size. In this study we have used the HIPR (High Internal Phase Ratio) procedure. The emulsions formulated in this paper are characterized by having viscosities up to ten times lower than their small monomodal size counterparts.
Is part ofAfinidad, 2017, vol. 74, núm. 580, p. 241-246
European research projects
Showing items related by title, author, creator and subject.
Asphalt emulsion formulation: State of the art of formulation, properties and results of HIPR emulsions Querol Solà, Núria; Barreneche Güerisoli, Camila; Cabeza, Luisa F. (Elsevier, 2019)As a way to make pavements more economic, less polluting, and with lower energy consumption bitumen emulsions can be used. The formulation of bitumen emulsions is a complex task and they are usually produced using colloid ...
Querol Solà, Núria; Barreneche Güerisoli, Camila; Cabeza, Luisa F. (MDPI, 2017)Storage stability is a very important parameter that has to be considered in the formulation of asphalt emulsions. When monomodal emulsions are formulated, Stokes' law is fulfilled, therefore the higher the viscosity the ...
Method for controlling mean droplet size in the manufacture of phase inversion bituminous emulsions Querol Solà, Núria; Barreneche Güerisoli, Camila; Cabeza, Luisa F. (Elsevier, 2017)The most important factors related to the manufacture of phase inversion bitumen in water emulsions are discussed in this paper. The distribution and average droplet diameter of an emulsion depends on formulation variables ...