Articles

For times when cast-in rebars aren’t planned and placed to connect concrete members, there aren’t many alternatives other than using injection mortar or grout. At first sight, they might look like similar technologies - still talking about chemical products surrounding a rebar installed in a drilled hole, isn’t it? However, these two technologies are far from being similar for several reasons. You may benchmark and compare the two technologies from different points of view, such as code suitability, productivity, and reliability. Spoiler Alert: Injection mortar outperforms grouts in every aspect. Let’s deep dive int...

The main differences between the approaches for post-installed anchor and rebar connections, Since the mid-1970s, adhesive anchors have been used extensively in construction. Today, most projects require the installation of concrete-to-concrete or steel-to-concrete fixtures, which are often secured by post-installed injection mortars. These are specified during the design stage or are needed during the execution phase to improve jobsite efficiency or to correct installation errors. Although some mortars might be suitable for both applications, others might not, and this is especially true for concrete-to-concrete...

A common and long-standing application of anchoring adhesives is the installation of deformed reinforcing bars (rebar) in holes drilled in concrete to emulate the behavior of cast-in-place reinforcing bars. These are commonly referred to as post-installed reinforcing bars. This application can be characterized as follow:  Post-installed reinforcing bars are embedded in adhesive in a hole drilled in existing concrete on one side of the interface and are usually cast into new concrete on the other side of the interface. The bars may be equipped with hooks or heads on the cast-in end, but are by necessity straight o...

Post installed reinforcing bars are being used in different applications at jobsites. Structural Designers who designs post installed rebar connections mostly care about identifying all structural loads, ensure safe design calculations and verifying the performance of the chemical anchor to be used, to ensure structural stability of the building. However, one of the most important factors while designing is to analyze all potential risks associated with the environment of the installation at the job site and ensure proper design specification is being made. This will help in minimizing the impact of any identifie...