The global use of concrete is second only to water. Since a lot of environmental issues are
associated with the production of Portland cement, alternate materials should be found out.
Davidovits proposed that an alkaline liquid could be used to react with the silicon (Si) and
the aluminum (Al) in a source material of geological origin or in by-product materials such as
fly ash and rice husk ash to produce binders. Geopolymer concrete is a concrete which does
not utilize any Portland cement in its production. Used-foundry sand is a by-product of …

Cement is mostly utilized for construction in present time because of its need but side by
side its drawbacks to environment also require attention. Also if we leave the waste
materials to the environment directly, it can cause environmental problem. So this needs to
be attention that this waste material should be utilized as possible. These waste materials
can be used to produce new products and also this waste can be used as admixtures. So
that our natural resources can be used more efficiently and we can save environment from …