Abstract
Series of studies on application of β-1, 3-Glucan (Curdlan) for viscosity agent to super workable concrete have been reported. The purpose of this study is to make clear about the poperties of β-Glucan by comparing the solubility, viscosity and other characteristics in cement system with conventional viscosity agent, cellulose ether. As a result, it is confirmed that β-Glucan exists in the form of independent swollen calcium gel particles and they have negative electric charge on their surface. It indicates that β-Glucan has the ability of increasing the viscosity of cement slurry, and furthermore it is suggested that β-Glucan partly contributes to increasing the fluidity of the cement slurry.
