| abstract |
[Problem] To provide a continuous kneading method capable of rapidly applying a large amount of super-fast hard grout mortar having high fluidity and non-shrinkage and exhibiting practical strength in 3 hours. Portland cement, calcium aluminate having a CaO / Al 2 O 3 molar ratio of 0.75 to 1.5, anhydrous gypsum, and calcium sulfoaluminum having a Blaine specific surface area value of 7500 cm 2 / g or more. Nate-based expansion material, silica fume, calcium hydroxide, lithium carbonate, alkali metal carbonate other than lithium carbonate, organic acid, fluidizing agent, gas foaming material, and fine aggregate The ultrafast hard grouting material is automatically supplied to the mortar mixer, and the stirring blade provided at the tip of the mixer is kneaded with the injected water to produce ultrafast hard grouting mortar. A continuous kneading method using super-fast hard grout material that uses a continuous kneading system that continuously pumps mortar with a connected snake-type pump. [Selection figure] None |