Producing Green Concrete by Using Zeolite, Fly ash or Eggshell

Green manufacturing is one of the most important issues in environmental science. Concrete is a building material used extensively. Green concrete is a type of concrete causes less harm to environment. In this type of concrete, waste or residual products are used instead of cement or aggregates partially or completely. One of the construction materials of concrete is cement. In producing procedure of cement, co2 is emitted to the air and causes air pollution. So, utilizing additives instead of a portion of cement content, leads to lower emission of co2. In this research program, some materials i.e. zeolite, fly ash, tire, eggshell and their combination were used. Various percentages of these materials were used. Effect of these materials on concrete compressive strength was studied after 3 and 28 days. It was concluded that using zeolite and fly ash together as a portion of cement did not decrease the slump and also 3-days compressive strength of this specimen was higher than the specimens with one of these additives. Moreover, eggshell could be used as an additive. Good results were achieved by using this material

Keywords:

Green concrete , Eco-friendly concrete , Zeolite , Fly Ash , Eggshell , Compressive strength.