氟硅酸盐对混凝土性能的影响

Influence of Fluorosilicate on the Performance of Concrete

通过研究氟硅酸盐对混凝土凝结时间、工作性、抗渗性能的影响,探讨氟硅酸盐对于综合改善混凝土耐久性的可行性。结果表明:掺入适量氟硅酸盐,可有效延长混凝土凝结时间;掺入0.5%氟硅酸镁,混凝土具备最佳的工作性能;掺氟硅酸盐外加剂混凝土具有良好的抗渗性能;综合改善混凝土耐久性的氟硅酸盐最佳掺量为0.5%的氟硅酸镁。

Effect of fluorosilicate on the setting time,workability and impermeability of concrete was researched.And the feasibility of comprehensive improving concrete durability was investigated.Results showed that the setting time extends when the concrete is blended proper fluorosilicate.Concrete possessed the best workability when adding 0.5% content MgSiF6 ·6H2O.The best mixing amount of comprehensive improving concrete durability was 0.5%.