Abstract
Similar to dental cavities, in that the damaged area must be filled, concrete also suffers from spall damage during long-term service. Inspired by 3D printing a resin patch that fits the shape of the damaged area in the tooth, an automated approach for concrete repair is proposed, where the damaged area of a concrete structure is filled layer-by-layer. It is therefore essential to ensure the adhesion of the printed materials. In this study, printable mixtures were formulated and the effect of adding redispersible polymer powder and cellulose ether on the adhesion of 3D printed materials was investigated. The adhesion of the material in the fresh and hardened stage was analyzed using a tack test and a pull-off test, respectively.
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