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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
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: Properties of New Polysaccharide as a Thickener for Concrete
Author(s): T. Izumi, S. Dikty, and H. Yamamuro
Publication: Special Publication
Appears on pages(s): 105-116
Keywords: polysaccharide derivative; self-compacting concrete; thickener
Abstract:A new polysaccharide derivative (NPD) is a thickener that has ionic functional groups and hydrophobic ones. This molecular structure generates unique properties , . Generally current common thickeners like cellulose derivatives are much affected by variety and quantity of inorganic metallic ions dissolved from cement. The solubility of thickeners tends to decrease due to metallic ions. Therefore, under ion-exchanged water they add viscosity to water effectively, but the viscous property would be reduced with increase of metallic ions. On the other hand, NPD shows an opposite behaviour. As the concentration of inorganic salt such as NaCl increases, the viscosity of NPD aqueous solution rises significantly . It is supposed that the formation of network structures generated by associating hydrophobic groups in the presence of metallic ions would cause excellent thickening ability. It is expected that NPD will be utilized as a thickener for self-compacting concrete and for anti-segregation in common concrete. Moreover, it is possible to make a so-called two in one product that owns both dispersability and viscous ability, because NPD is mixed with a superplasticizer easily without increasing solution viscosity.
Click here to become an online Journal subscriber