Pneumatic formwork construction

Manta event roofing

Concrete as a construction material has an especially high resistance to compression. Concrete shells with a geometry optimized in a way such that primarily compressive forces arise are accordingly structures that can transmit great loads and span large areas with a minimum of material. The expenditure for formwork, however, currently leads to high costs, making their implementation in most cases inefficient.

At the Institute of Structural Engineering of the Vienna Technical University, a new concrete forming system with the name Pneumatic Forming of Hardened Concrete (PFHC) has been developed...

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Issue 02/2015 New structural frameworks

An inflatable concrete dome

It is very expensive to use currently available construction methods to build free-form concrete shells. As a result, many designs are not implemented due to shortage of funds, but replaced with...

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Issue 02/2013 Dimensioning and Fabrication Technique

Thin-walled Shell Structure made of Textile Reinforced Concrete

At RWTHAachen University currently a pavilion is realized with a load-bearing structure consisting of four large-sized concrete shells. As reinforcement a non-corroding high strength textile fabrics...

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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...

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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...

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Issue 03/2011 Compression testing machines

Tests for high-strength and high-performance concrete

Mortar and concretes with a compressive strength of up to 800 N/mm² are currently under development. Typical fields of application of high-strength concrete and high-performance concrete are: »...

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