Joining precast elements and semi-precast elements

UHPFRC composite joints

Ultra-high-performance fiber-reinforced concrete (UHPFRC) is a cementitious high-perfor­mance material which, through an optimized grain structure and added steel fibers, achieves a compressive strength in excess of 150 MPa and a tensile strength of approx. 8 MPa. The crack-bridging effect of the micro-steel fibers added (the so-called fiber effectiveness) results in a very fine crack distribution pattern at very narrow crack widths and thus excellent durability. The material’s properties make it eminently suitable for use in highly stressed, permanent and slender structures such as bridges or...

Related articles:

Issue 10/2020

Compressive strength classes and performance classes of ultra-high-performance concrete (2)

3 Classification of UHPFRC in tension 3.1 Parameters and test method The axial post-cracking tensile strength (notation: fcft) is the most important material parameter of ultra-high-performance...

more
Issue 11/2014

Production and testing of thin-walled UHPFRC precast elements

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...

more
Issue 06/2022

Fibers replace reinforcement – Rapid construction with fiber-reinforced semi-precast elements

Installing conventional reinforcement is expensive and time-consuming. This process step is eliminated by using steel fiber reinforced concrete. However, in general, fibers are not used as the only...

more
Issue 03/2025

Repair and upgrade of a trough structure using ultra-high-performance fiber-reinforced concrete (UHPFRC)

Ultra-high-performance fiber-reinforced concrete is a purely mineral concrete matrix mixed with steel fibers. In Switzerland, it is one of the standardized, widely used building materials. Based on...

more
Issue 09/2020

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...

more