Fly ash has been used together with lime in the stabilization of soils. Some fly ashes were found to harden and develop strength without addition of lime. One of these fly ashes was used to stabilize two crushed limestones. After 28 days moist curing, specimens of limestone mixed with 20 per cent fly ash showed water stable strengths of 400 psi. The stabilization of soils with fly ashes that react without lime is one of the cheapest soil stabilization methods.
Proceedings of the Iowa Academy of Science
©1963 Iowa Academy of Science, Inc.
"Stabilization of Two Iowa Limestones With Fly Ash Alone,"
Proceedings of the Iowa Academy of Science, 70(1), 290-294.
Available at: https://scholarworks.uni.edu/pias/vol70/iss1/53