1. Scope

Keywords

Rationale

It is proposed to develop a test method for determining the bond strength of samples extracted from additively constructed concrete components. In practice there is a significant difference between the behavior of cast components and additively constructed components using cementitious materials. The mechanical properties obtained from samples extracted from components built using additive construction are significantly different from their traditionally cast counterparts. Additionally, the complexities of variable geometries due to the layer-by-layer process, conventional concrete and mortar test methods may lead to conflicting results. There are no known similar test methods for any other material that translates to this need. This test method will provide a universal procedure for testing laboratories to determine the representative bond capacity under tension. This test method will allow architects, engineers and approval agencies a means to define the mechanical performance of building components produced through additive construction and help develop correlations between the mechanical performances of additively constructed concrete and mortars with design values of their cast counterparts.