Silica sand in cement mix

[Diego Navarrete Tornel]

Good day everyone. I've been working on the extraction of construction materials and have noticed that the sand I've recently excavated is corroding the cement mix and the bricks produced. We were informed that this sand has a high silicon content. As a chemist, I assume the silicon present must be in a reactive form other than SiO2.

Has anyone had a similar situation, or can provide me with any advice for this situation?

Greetings!!

 

[1.202056]

what you say doesn't make sense. sand from natural sources will not contain 'silicon (Si)'. Sand is already high in silica (SiO2), so that also doesn't make sense. Mix refers to unset or wet concrete. How can concrete be 'corroded'? I think you mean, the sand we are using is causing discoloration or disintegration of the subsequent poured concrete or fired brick. You'll have to supply photos or a description of the fault.