Abstract
The behaviour of façade anchors in high performance fiber reinforced concrete (HPFRC) has not been investigated in sufficient detail in recent years. The regulations in the European Technical Approvals also do not fully describe the load-bearing capacity of anchor systems. Due to the increase in the production of HPFRC elements, it is necessary to analyse the impact of added fibers in the concrete composition on the behaviour of anchors. In particular, the behaviour of anchors in filigree façade elements, which is one of the main application areas of the programme of polypropylene (PP) fiber-reinforced concrete, is therefore analysed. With a sufficient content of PP fibers surrounding the steel anchors oriented in an optimal direction, the fibers may enhance both the load-bearing capacity of anchors and the ductility of concrete. However, unfavourable effects on the installation process or even on the load-bearing capacity may also occur due to unfavourable fiber orientation. Therefore, tensile and punching tests were carried out in uncracked concrete with different types of anchor systems containing a tension anchor and an adjustable spacer bolt. The PP fiber content of the concrete component varied during the tests.
Highlights
The façade separates the interior from the exterior, ensuring a comfortable indoor climate
The analysis of results showed that the different fiber dosage influences influences the the effective effective fiber fiber orientation
The adjustable suspended tension anchors were examined in pull-out tests
Summary
The façade separates the interior from the exterior, ensuring a comfortable indoor climate. The façade is exposed to internal and external factors and serves as protection against wind, rain and heat. The façade has an impact on the energy efficiency of the building. The façade is an important design element affecting the appearance of the building and can be realised in many different forms and styles [1]. Façade cladding is a rapidly growing product group for the pre-cast concrete industry. It is of great interest to optimise the load-bearing capacity and economic efficiency of these façade systems [2]. The façade panels of the façade systems should have exposed concrete properties, i.e., they should remain in uncracked condition under load
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