Kao Group presented at “The 9th ACI International Conference on Superplasticizers and Other Chemical Admixtures” in Seville SPAIN

Nov. 20, 2009

Kao Chemicals GmbH made oral presentations of the latest study related to cement admixtures at “The 9th ACI International Conference on Superplasticizers and Other Chemical Admixtures” in Seville from October 12 to 15.

This international conference, held every three years is hosted by American Concrete Institute aiming to provide latest application technologies related to chemical admixtures for concrete. More than 230 persons participated from major universities, research institutes, admixture companies, cement industries and concrete producers from 41 countries and made about 60 presentations with active discussion.
Kao group supported the operation of this congress as a cosponsor and adviser committee member. After providing the following two presentations, active question and answer session was performed winning great popularity. Two papers presented were included on ACI official collection of papers (35 papers). It was a good opportunity to introduce latest technologies. Kao continues to foster such technologies and develop products that contribute to diverse range of industries.

Kao's presented themes

  1. The relationship between retention stability and chemical structure of PCE

    In the paper, the influence of the molecular structure and functional groups of PCE superplasticizers on retention stability in terms of external changes were studied. The adsorption behavior was found to be very important to stabilize the retention performance against external changes. Finally, the structure to control the adsorption behavior was proposed.

  2. Pursuance of workability retention by new superplasticizer

    In the paper, the further workability improvement for longer periods was investigated to provide better concrete workability to the construction job site. With the recent PCE technology, the concrete viscosity was found to increase with time although the concrete fluidity could be maintained. The combination of new hyper-branched polymer and hydrolysis polymer was proposed as new solution to maintain not only fluidity but also low viscosity.

Oral session room with lively exchange of opinions
Kao Group