Aggregates with a lot of unstable silica like strained quartz can cause the creation of silica gel when exposed to cement. The aggregate supplier should be the one running tests to prove they don’t have reactive silica.
Other tests include air entrainment and the slump test. The concrete mix requirements should be chosen by the engineer or architect.
Which aggregates?
What are some other tests you can use to decide which concrete is best for you?
Aggregates with a lot of unstable silica like strained quartz can cause the creation of silica gel when exposed to cement. The aggregate supplier should be the one running tests to prove they don’t have reactive silica.
Other tests include air entrainment and the slump test. The concrete mix requirements should be chosen by the engineer or architect.
Good to know, thank you!