Published: Jan 1963
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This paper describes structural testing of brick and tile assemblages bonded with cementitious mortar containing an organic latex that increases the bond tensile strength four times over conventional mortar strengths. The program embraced the following studies: 1. The proposed use of a 4 by 8 by 16-in. prism as opposed to an 8 by 8 by 16-in. prism, so that the 300,000-lb concrete cylinder testing machines may be used for such strength tests. 2. A critical study of diagonal tension and the possible development of a 4 by 16 by 16-in. wallette that can be tested in a universal testing machine to develop a state of pure shear without rotation of the specimen or the necessity of a hold-down force. Large scale tests have been made to study the difference between diagonal tension m shear walls and shear beams. Emphasis is given to knowledge of the state ol stress at the point where critical diagonal tension exists. 3. Column tests to establish the point of critical Euler buckling for thin wall plates. 4. The use of nondestructive vibration techniques to determine the modulus of rigidity and the modulus ol elasticity in directions perpendicular and parallel to the bed joint of the assemblage. Vibration of walls as plates provides an independent check on Poisson's ratio.
Manager, Structural Clay Products Research Foundation, Geneva, Ill.