This work tests the suitability of seawater for the synthesis of one-part alkali-activated material. The setting time, strength development, reaction product and steel corrosion of seawater mixed one-part alkali-activated ground granulated blast furnace slag-fly ash are investigated. Compared with freshwater, seawater can accelerate the alkali activation process, reflecting as shortened setting times. The obtained material possesses high early and long-term strength; the 3 d and one-year compressive strength are over 25 MPa and 73 MPa, respectively. In addition, the seawater mixed material has very slight negative influence on the reinforcement steel. Apart from the alkali activation process, chloride-binding property by synthesized material was also studied. Formation of chloride-bearing reaction product was detected, which might contribute to retard chloride and minimise the corrosion risk. All these results contribute to better understand the chemistry of alkali-activated materials and promote its application.

这项工作测试了海水是否适合于合成一件式的碱活化材料。研究了海水混合的单部分碱活化磨碎高炉矿渣-粉煤灰的凝结时间，强度发展，反应产物和钢腐蚀。与淡水相比，海水可以加快碱活化过程，反映出凝结时间缩短。所得材料具有较高的早期和长期强度。3 d和一年的抗压强度分别超过25 MPa和73 MPa。另外，海水混合材料对增强钢具有非常小的负面影响。除了碱活化过程之外，还研究了合成材料的氯结合性能。检测到形成了含氯化物的反应产物，这可能有助于阻滞氯化物并最大程度地降低腐蚀风险。所有这些结果有助于更好地了解碱活化材料的化学性质并促进其应用。