MORTAR ADMIXTURE FOR MACHINE SPRAYING

摘要

PURPOSE:To obtain a mortar admixture easy in surface finishing of mortar composition after sprayed and free from clogging of hose with a mortar composition when used for a machine spraying construction. CONSTITUTION:This admixture is obtained by compounding 100 pts.wt. of a water soluble cellulose ether, whose viscosity is >=15000mPa.s in 2 pts.wt. of aqueous solution at 20 deg.C, with 0.5-5 pts.wt. of a water-soluble anion surfactant and 0.5-5wt.% of Welan gum. The admixture is added to a mortar composition and this mortar composition is used for machine spraying construction.