The mineral Clinoptilolite, is a member of zeolite family (zeolites are relatively diverse due to their physical and chemical properties) and one of the most useful types of natural zeolites. Clinoptilolite is from the silicates group and the sub-group of tectosilicates (chemistry: aluminum calcium potassium sodium hydrate silicate,). Clinoptilolite is commonly used as a chemical filter, chemical absorbent and water purifier [1]. These compounds have a quadrilateral structure (four oxygen atoms around a silicon atom), in which there are cavities and canals with diameter of 3-10 angstroms. These cavities contain 10-20% water. This structure has led to a cation exchange with a capacity of 2.16-4.73 meq/gr in clinoptilolites. The ionic exchange and absorption capability enables these structures to eliminate many cationic constituents from solutions. Zeolites have few tendency to exchange anionic compounds [2].
The use of light concrete in the members of the instrument can be considered as a suitable solution to reduce the risks of earthquakes. One of the main limitations of the major use of concrete is the use of more cement than conventional concrete, and one of the solutions to this problem is the use of cement substitutes. The use of concrete with low specific gravity, as well as increased compressive strength of concrete, can lead to styling and reducing the dimensions of structural components. In this paper, the effect of zeolite on concrete resistance, specific gravity and absorption of concrete water has been investigated. The results of the experiment were compared on five samples with different percentages of zeolite (0%, 10%, 20%, 30%, 40%) with the test results on the control sample. Increasing resistance, decreasing specific gravity and increasing the amount of water absorption of concrete from the results of zeolite in light concrete.