Chloride ion curing agent for sea sand concrete and preparation method thereof

The invention provides a chloride ion curing agent for sea sand concrete as well as a preparation method and application thereof, and the chloride ion curing agent is prepared from the following raw materials in parts by weight: 200 to 300 parts of metakaolin, 50 to 100 parts of calcium sulphoaluminate modified CaAl-NO3. LDHs, 60 to 80 parts of superfine silica fume, 30 to 50 parts of calcium sulfate and 5 to 20 parts of polyaluminum sulfate. Through interaction of the raw materials, the sea sand concrete chloride ion curing agent has an excellent chloride ion fixing effect, and can be fixed for a long time without desorption; the method can be widely applied to maritime work environments. 本发明提供一种用于海沙混凝土的氯离子固化剂及其制备方法和应用，按照重量份计，包括如下原料组成：偏高岭土200～300份、硫铝酸钙改性CaAl-NO3·LDHs 50～100份、超细硅灰60～80份、硫酸钙30～50份、聚合硫酸铝5～20份。通过上述原料组成的相互作用，共同使得海沙混凝土氯离子固化剂具有优异的氯离子固定效果，并且能够使其长期固定住而不发生脱附；可以广泛应用于海工环境的应用。