The article presents the results of work by the AFREM/HPC group on the formulation of high-performance concretes. This is an updating of LCPC's grout method. The goal is a methodology making it possible, for a given binder (or mixture of binders), to determine the saturation doses of a certain number of superplasticizers and compare them in terms of their effectiveness and the duration of the rheological behaviour they impart. The innovations with respect to the old method are the following: i) the starting concrete can vary over a broader range, ii) part of the sand is added in the grout, iii) mixing and measurement are better codified, and iv) the method of determining the saturation proportion is objective. The method has successfully passed tests of repeatability and reproducibility (between the six member laboratories of the group). Ri~SUMi~ L'article pr&ente le r&ultat du travail du groupe AFREM/BHP sur la formulation des b~tons h hautes performances. Il s' agit d' une remise a jour de la m~thode des coulis du LCPC. Le but en est de fournir une m&hodologie permettant, pour un liant (ou m~lange de liants) donnS, de d&erminer les doses de saturation d'un certain hombre de superplast~'ants, de comparer leurs efficacit& respectives et leur propension h con)&er un comportement rh&logique stable dans le temps. Les nouveaut& introduites, par rapport l'ancienne m&hode, sont les suivantes : i) b~ton initial pouvant varier clans une plus large gamme, ii) introduction d'une partie du sable clans le coulis, iii) malaxage et mesure mieux codifi&, iv) m~thode objective de d~termination de la dose de saturation. La m~thode a fait l'objet d'essais de r~p~tabilit8 et de reproductibilit~ (entre les six laboratoires membres du groupe) satisfaisants.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.