Hamun Fathi - Department of Civil Engineering, Islamic Azad University, Sanandaj, Iran
Erfan Abdolmaleki - Master of Civil Engineering student, Islamic Azad University, sanandaj

The buried waste and waste building materials such as brick, stucco, concrete and plastic panelsis one way of reducing environmental pollution and the cost of construction. Take advantage ofsome of the hazardous substances as well as fillers in construction materials there. Some of thesematerials have a positive impact and improve the behavior of materials. Tea with observations,5, 10, 15 and 20 grams per liter of boiling water were mixed. Tea extract as concrete mixingwater tested and the results show that the addition of this extracts increasing the slump. Tea wascontrolled for different slump percent increase. This increase reduced the 28-day compressivestrength cube is an example.

waste materials, tea extract, Slump, Reduction in compressive strength