Slump Control With Reactive Polymeric Dispersant


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Title: Slump Control With Reactive Polymeric Dispersant

Author(s): T. Izumi, T. Mizunuma, M. Iizuka, and M. Fukuda

Publication: Special Publication

Volume: 119


Appears on pages(s): 243-262

Keywords: amides; carboxylic acid esters; concretes; dispersants; hydrolysis; particle size; plasticizers; plastics, polymers and resins; reactivity; workability; Materials Research

Date: 9/1/1989

A new technology of slump control with a reactive polymeric dispersant was studied. The mechanism of slump loss prevention as well as the physical properties of concrete containing the dispersant were discussed. To solve the slump loss problem, the authors developed ultra-fine particles of reactive polymer. It is a dispersant precursor originally insoluble in water but is gradually converted into a dispersant by hydrolysis with strong alkaline materials in concrete. It was found that the workability of concrete was controlled favorably with the reactive polymeric dispersant.