Evaluation for the effect of different types of superplasticizers considering the mixing effect

Title: Evaluation for the effect of different types of superplasticizers considering the mixing effect
Author(s): K. Takada, J. Walraven
Paper category : conference
Book title: International RILEM Symposium on Self-Compacting Concrete
Editor(s): O. Wallevik and I. Nielsson
Print-ISBN: 2-912143-42-X
e-ISBN: 2912143713
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 403 - 414
Total Pages: 12
Nb references: 4
Language: English

Abstract: The influence of mixing efficiency on the properties of fresh cement paste was studied considering the difference of type of superplasticizer, a polycarboxylic ether based one (PC-type) and a naphthalene sulfonate based one (NS-type). The experimental result clarified for both types of superplasticizer that a larger mixing energy makes a cement paste less viscous, but the mixtures with NS-type consumed much smaller electric energy during the mixing than the mixtures with PC-type. It is estimated to be based on the difference of dispersion mechanisms. Moreover, it was found that PC-type works to reduce both the yield value and the viscosity of cement paste rheologically, but NS-type reduces only the yield value and does not influence the viscosity so much as PC-type when mixing procedure is constant.

Online publication: 2003-08-21
Publication type : abstract_only
Public price (Euros): 0.00