Skip to main content

Price Increase Update - 2022 Learn more

Hilti

Features & Applications

Features
  • Reliable solution providing high performance in diamond cored holes
  • The only approved solution for diamond cored holes in cracked concrete (ICC-ESR)
  • Faster and easier anchor or rebar installation in cored holes
Applications
  • Diamond cored holes for post-installed anchors and rebar connections

Technical Data

Documents & Videos

Consulting & Support

Getting the best out of epoxy mortar in diamond-cored holes

TE-YRT roughening tool and HIT-RE 500 V4 epoxy mortar make the difference

Getting the best epoxy mortar bonds in diamond-cored holes

Chemical anchoring applications always come with a certain amount of complexity, but few compare to the difficulty associated with installing rebar in deep, diamond-cored holes.

It's one of the most challenging processes contractors come across on a job site, mainly due to the many different steps involved.

It's not a procedure that is particularly common, often being reserved for specialist scenarios. Even so, in situations where it is necessary, it's imperative to get the process right and ensure that each bond is as strong and stable as possible.

The challenges of installing rebar in diamond-cored holes

Typically, installing rebar in deep, diamond-cored holes is a process required when a structural column needs to be extended. In these scenarios, existing rebar needs to be extended for maximum stability, and an engineer will often specify a very deep hole for this. The best way to achieve these deep holes consistently is through diamond coring, particularly in scenarios where contractors will need to drill through existing rebar as well as cracked or uncracked concrete.

However, it's critical to keep in mind that the sides of a diamond-cored hole are smoother than other drilling methods, resulting in less surface area. This means that holes often need to be very deep, in order to compensate for this smoothness and achieve maximum bond strength with an epoxy mortar.

Here at Hilti, we recognise that this can cause problems and inefficiency on a construction site, which is why we've introduced two innovative products to make the process of installing rebar in diamond-cored holes much easier. These products are our TE-YRT roughening tool and HIT-RE 500 V4 epoxy mortar.

Rather than drilling deeper to compensate for the smooth sides of a diamond-cored hole, it's much easier and more effective to simply provide each hole with rougher surfaces, and more surface area. This is where the Hilti TE-YRT roughening tool comes in, providing a simple way of creating more surface area for an epoxy to bond to.

Because every construction site is slightly different, there is a variety of different sizes available within the roughening tool range. This means that regardless of hole diameter, contractors can use a matching tool that fits perfectly and roughens the hole without causing any damage and potentially compromising the bond. Using the roughening tool is quick and easy, with the process taking only a few minutes to complete. The tool provides a simple solution that can be relied upon in situations where dependability is critical.

Our fourth version of HIT-RE 500 epoxy mortar provides a lot more strength than then the previous one, thanks to a new chemical composition that's been refined to offer the best bond strength in situations where nothing else will do. In fact, the HIT-RE 500 V4 offers by far the best bond strength in its class, so contractors can rest easy knowing that each piece of rebar that they install will last the distance.

Like previous versions, HIT-RE 500 V4 also boasts a long working time, giving contractors more control over the installation process without having to race against the clock. And when the epoxy has cured, it will be harder than concrete.

While both the TE-YRT roughening tool and HIT-RE 500 V4 epoxy mortar make installing rebar in diamond-cored holes easier, the process really goes up a level when the two are used together. In tandem, the products allow for far shallower holes and incredible bond strength - saving time as well as requiring less epoxy volume.

ADVANCED ANCHOR SOLUTIONS BUILT TO CODE

Find out here
Designing post-installed rebar

Post-installed rebar solutions

Learn more
Log in to proceed
Added to cart
Added to cart
Go to shopping cart