In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Sheik Rashid Tower, 7th Floor
Dubai World Trade Center
Phone: +971 4 3097066
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Rheological Behaviour of Cement Pastes with Low Amounts of Polynaphthalene Sulfonate Plasticizer
Author(s): Alexander Mezhov, Simon Ulka, Charles. E. Diesendruck, Youri Gendel, and Konstantin Kovler
Publication: Special Publication
Appears on pages(s): 13.1-13.10
Keywords: adsorption; low dosage admixture; plasticizer efficiency; polynaphthalene sulfonate (PNS); rheology; yield stress
Abstract:In this manuscript, the behaviour of cement pastes is examined when exposed to small additions of three different Polynaphthalene Sulfonate (PNS) based plasticizing admixtures. The adsorption behaviour of the polymeric molecules onto the cement particles is studied, and the minimum dosage of admixture required to achieve a significant change in the paste’s yield stress is measured together with the amount of an entrapped air. Below a minimum PNS dosage, there is no significant change in the yield stress and the amount of air in the paste. Yet, beyond this minimum dosage, both the viscosity and the yield stress decrease steadily and the amount of the entrapped air increases. Interestingly, one of the PNS admixtures exhibited a slower plasticizing effect (i.e. a higher critical dosage) than two others studied PNS compounds.
Click here to become an online Journal subscriber