Tensile Test and Shear Test

In general, for the type of sealants typically used to seal joints on ALC panels, the modulus of the sealant increases as it ages and deterioration progresses [3]. With an increase in the sealant modulus there is a risk that the surface of an ALC panel onto which the sealant is applied might indeed fracture as the panel contracts and the joints open, if the tensile strength of the concrete is suffi­ciently low. In order to determine the degree of modulus increase that might bring about surface fracture of the ALC panel and subsequent spalling of the

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concrete, the sealant products were formulated with different values of modu­lus. Thereafter, both tensile and shear tests were conducted for the anticipated deformation of ALC panel joints.