Composition for maritime work cement, preparation method of composition, maritime work cement and concrete

The invention provides a composition for maritime work cement, a preparation method of the composition, the maritime work cement and concrete, and relates to the technical field of ocean engineering construction. The composition for the maritime work cement comprises the following components: ceramic powder, fly ash and superfine ash powder, and the ceramic powder comprises alkali-activated ceramic powder; the ceramic powder, the fly ash and the superfine ash powder are superfine powder. According to the invention, the technical problem of high chloride ion diffusion coefficient in ordinary cement is solved, and the technical effects of improving chloride ion resistance, erosion resistance and compactness of concrete are achieved. 本发明提供了一种海工水泥用组合物及其制备方法、海工水泥、混凝土，涉及海洋工程建筑的技术领域。本发明的海工水泥用组合物包括如下组分：陶瓷粉、粉煤灰以及超细灰粉料，其中，陶瓷粉包括碱激发后的陶瓷粉；陶瓷粉、粉煤灰以及超细灰粉料均为超细粉体。本发明解决了普通水泥中氯离子扩散系数高的技术问题，达到了提高混凝土的抗氯离子性能、抗侵蚀性能以及密实度的技术效果。