Reliability and Design Issues of Bonded Anchors Installed Using Different Techniques

Bonded anchors are typically installed using injection systems, where products are injected into pre-drilled holes using proprietary mixing systems supplied by manufacturers, or using products that need to be pre-mixed by hand (or with the aid of a mixing tool). In this latter situation, pouring the resulting mix into the pre-drilled holes or thrusting it through the holes is the only option. Within this context, an overview is presented on the influence that different installation techniques have on the performance of three mixes (one to be injected and two to be prepared by the user). The performance of each mix is investigated by carrying out tests in different environments to assess the reliability of the product in typical jobsite conditions. A comparison of the different requirements concerning product certification in Europe and their correlation with the available (or still unavailable) design provisions and requirements is also carried out.