MINERAL BASED LIQUID QUICK SETTING AGENT AND METHOD FOR MANUFACTURING THEREOF

摘要

PURPOSE: A manufacturing method of a mineral liquid accelerating agent is provided to increase stability and quick setting power by combining cement mineral raw material with alkali-free accelerating agent, thereby improving performance, usability and human-body harmfulness of accelerating agent for shortcrete. CONSTITUTION: A manufacturing method of a mineral liquid accelerating agent comprises the steps of: manufacturing a mixture by mixing calcium slufo aluminate, aluminum hydroxide, phosphoric acid, and water (S1); manufacturing a solution by dissolving the mixture from the previous step in hydrofluoric acid (S2); manufacturing a mixed solution of calcium sulfo aluminate, aluminum hydroxide, and slufoaluminum in the solution from the previous step (S3); controlling pH of the mixed solution by adding a pH controller in the mixed solution from the previous step (S4); and stabilizing the mixed solution by injecting a stabilizer (S5). The mineral liquid accelerating agent comprises: 4-6 wt% of Al(OH)3; 2-4 wt% of calcium sulfo aluminate; 0.2-0.9 wt% of phosphoric acid group; 8-10 wt% of HF; 47- 50 wt% of Al2(SO4)3); 0.5-0.8 wt% of sodium; 0.4-0.6 wt% of amines; 1.0-2.5 wt% of magnesiums; and 28-32 wt% of water. [Reference numerals] (AA) Start; (BB) Dissolve a mixture in hydrofluoric acid; (CC) Dissolve aluminium sulfate; (DD) Control pH; (S1) Mixing calcium slufoaluminate and aluminum hydroxide; (S4) Add stabilizer; (S5) End