海水海砂混凝土氯离子固化的研究进展

Research Progress on Chloride Ion Immobilization in Seawater-Sand Concrete

摘要: 随着国家经济发展对建筑行业的需求，混凝土的大量使用导致河砂资源不断减少。因此考虑另一种建筑用砂变得迫在眉睫，由于地球有着极大的海洋面积，所以将海水海砂作为河水河砂的替代品成为了现在大热的研究方向。本文以海水海砂混凝土为研究对象，总结国内外学者对于纳米材料(纳米SiO₂)、工业副产掺合料(粉煤灰、矿粉)的特性研究。分析不同单一掺合料对海水海砂混凝土氯离子固化及力学性能的影响，并对未来海水、海砂在混凝土应用研究进行展望。

Abstract: With the increasing demand for the construction industry in national economic development, the extensive use of concrete has led to a continuous decrease in river sand resources. Therefore, it is urgent to consider an alternative type of construction sand. Given the vast ocean area of the Earth, using seawater sand as a substitute for river sand has become a popular research direction. This paper focuses on seawater sand concrete, summarizing the research conducted by scholars both domestically and internationally on the properties of nanomaterials (nano-SiO₂) and industrial by-product admixtures (fly ash, slag). It analyzes the impact of different single admixtures on the chloride ion solidification and mechanical properties of seawater sand concrete, and provides an outlook on future research on the application of seawater and seawater sand in concrete.