Structural clay tile component behavior

The basic properties of structural clay tile walls were determined through component and composite testing of structural clay tile and mortar. The fundamental material parameters and strengths of clay tile coupons were determined through compression, tension, modulus of rupture and absorption tests. Mortar cylinders were tested in both compression and split cylinder fashion. Stress curves for mortar under compression were determined. strain

Four miniature prisms were tested in compression. These prisms were made from two 8" x 12" x 12" structural clay tiles, using a stack bond with a 3/4" mortar joint. Stress strain curves as well as material property values were obtained. These results were compared with previous tests on larger (2' x 4') prisms.

Twenty five bond wrench samples were tested. Two series of bond wrench samples were run. The first series (six tests) were fitted with LVDTS so that load deflection curves as well as flexural strengths could be obtained. A shifting of the neutral axis towards the compression face was observed. The second series were made with different mortar types: type N masonry cement mortar, type S masonry cement mortar, type N portland cement lime (PCL) mortar, and type S PCL mortar. Type S mortar and portland cement lime mortar were found to improve the bond strength.