Production and testing of thin-walled UHPFRC precast elements

A realistic scope of application for UHPFRC and new options for thin-walled precast elements were defined on the basis of the experience gained in a series of experimental tests carried out as part of a DFG research project at iBMB Braunschweig.

1. Introduction

This article reports on experimental tests carried out as part of a DFG research project at the iBMB, Department of Concrete Structures, at Braunschweig University of Technology. This project evaluated the production and load-bearing behavior of thin-walled, box-section precast elements made from ultra-high-performance fiber-reinforced concrete (UHPFRC). The precast elements produced for testing purposes included two designs: a conventional, monolithic box beam design and a segmental beam design. Furthermore, this contribution outlines the test design and key findings of the...

Related articles:

Issue 2014-02 In a monolithic and segmental construction method

UHPFRC beams with hollow box cross-section

Background Contrary to the monolithic design, for segment construction single building units are prefabricated in the precast concrete factory for later assembly at the construction site. Using joints...

Issue 2020-09

Compressive strength classes and performance classes of ultra-high-performance concrete (Part 1)

1 Introduction The spectrum of normal weight concretes covered by DIN EN 206 [1] and DIN EN 1992-1-1 [2, 3] ends at compressive strength class C100/115 in Germany at present. The characteristics...

Issue 2017-02 Potentials for the precast industry

Bridge construction with UHPFRC precast elements

Stringent requirements for bridge structures due to rising traffic volumes, accompanied by the age structure of bridges in Germany, are calling for fast construction of new and replacement structures....

Issue 2022-08

Memory steel connectors for carbon-reinforced concrete components

A new type of connector for thin-walled carbon-reinforced concrete components was developed on the basis of shape memory alloys and used as a stable, force-locked and linear connection for large...

Issue 2013-08 Research project of TU Vienna

Thin-walled precast concrete girders for bridge construction and civil engineering

In building and industrial construction, lattice-girder floor slabs and double-wall elements have been successfully used for years. These semi-precast elements of 5-7cm thickness serve as permanent...