Effect of The Rock Size In The Surface on The Cost And Specification of Floor Tiles

Abstract

The floor tiles (mozaek) used largely to finish floor. These are different fromkind to kind according to the size of the rock that used in the surface layer with itsdimension and external form.The size of the rock in the surface layer affect on the cost and floor tilesspecifications; it has been noticed in the results of lab- test for the samplesaccording to Iraqi specification no. (1042) year (1984).The changes in the size ofthe rock in floor tiles make changes in the lab- test results especially in themodulus of rupture test which is the most important to indicator to know the floortiles goodness the modulus of rupture decreases with the increasing of the marblerock size which is used in the surface layer . Absorbent and the total absorbent testnoticed the test results change according to size marble rock changes.there areincrease with the increasing of marble rock size. also the cost related to marblerock size as the rock consider the essential material which controlling the floor tilescost, because there is a big contrast in marble rock price in different size.so theincrease in the cost was 35%btween smallest and largest size.