Issue BFT International 02/2017

Content

NEWS | NACHRICHTEN

Bühnen

Change of generations

The adhesive specialist Bühnen of Bremen, Germany, has a new Managing Director. As the family-run company reports, the Managing Partner Hanno Pünjer...

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R-Tech

R-Tech preloading technology

R-TECH has been active in the design and production of transport racks for the precast concrete industry since 1998. The transport racks are...

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Wasa

New generation of PUR wet-cast molds

Nowadays, cast stones manufactured in a wet-cast process are regarded as being high-quality design products. The trend of coarse imitations of natural...

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Patents | Patente

Architectural concrete formwork

(10) DE 10 2015 110 129 Al
(22) 24.06.2015
(43) 29.12.2016
(57) Eine Sichtbeton-Schalung besitzt eine Schalhaut 8, wobei ein Schalhautstoß 6 zwischen...

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Concrete sleeper and slab track

(10) DE 10 2013 105 090 B4
(22) 17.05.2013
(43) 20.11.2014
(57) Betonschwelle (1) für eine feste Fahr­bahn (23), mit einem Dübelstein (12), der mit...

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Masonry system for landscaping

(10) DE 10 2015 008 165 Al
(22) 25.06.2015
(43) 29.12.2016
(57) Die Erfindung betrifft ein Mauersys­tem für die Landschaftsgestaltung, das aus...

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CONCRETE TECHNOLOGY | BETONTECHNOLOGIE

EVENTS | VERANSTALTUNGEN

SERVICE | SERVICE

NOE-Schaltechnik

Façades mirror riparian woodland

The Auwald Sports Center of the municipality of Gundremmingen in Germany accommodates, in addition to its sports hall a shooting range, a function...

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FINISHING | VEREDELUNG

PRECAST ELEMENT PRODUCTION | FERTIGTEILHERSTELLUNG

Navigable Vision

The Dusseldorf Wehrhahn line demonstrates in its architectural and artistic design – like hardly any other major project of recent years – how...

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PANEL 1 | PODIUM 1

High-strength and ultra-high performance concretes

Improvement of the rheological behavior

At present, high-strength and ultra-high performance concretes gain more and more in importance across the world. They are characterized by an...

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WiTraBau: Newly developed materials for high-performance concrete

Research projects transferred to practice

Since December 2014, the Federal Ministry of Education and Research (BMBF) has been funding the “WiTraBau – Wissenstransfer im Bauwesen” (Knowledge...

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New possible applications

High flexural tensile strength concrete

Nowadays, fiber-reinforced concrete is often used to increase the flexural tensile strength of the material. This approach enables a reduction in the...

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New findings and forecast models

Freeze-thaw attack and damage

The freeze-thaw damage pattern of concrete is primarily linked to the water contained in the pore system, which is also referred to as the saturation...

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PANEL 2 | PODIUM 2

Frost/deicing salt damage to concrete block steps in a garden

Who is liable for the work result?

A property owner browses the catalog of a concrete block manufacturer and chooses visually appealing block steps to be installed by a landscape...

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Challenges with respect to surface design

Water-sensitive design of street spaces

The design of urban streets must consider not only their traffic function but also requirements for the drainage of built-up areas. The expected...

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PANEL 3 | PODIUM 3

How will structural precast components be used in Germany?

Implications of the ECJ judgement

Pursuant to the European Court of Justice (ECJ) judgment in case C-100/13, additional national requirements for harmonized (CE-marked) construction...

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Load-bearing reinforced architectural concrete façade

The Deutsche Bank project in Berlin

Description of building and structural components
This office and commercial building includes seven stories. Its load-bearing structure mainly...

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Precast elements in bridge construction

New developments and international examples

A large number of new bridges need to be built in conjunction with maintaining and expanding the transport infrastructure in Germany. Precast...

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PANEL 4 | PODIUM 4

Challenges in production and market launch

Drainage systems made of reinforced concrete

Evolution principles of biological systems have become increasingly important as idea pools. The Institute of Applied Construction Research IAB Weimar...

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New challenges for drainage

Urban flash floods

The growing number of heavy rainfall events sensitizes citizens and local authorities even more. Locally extreme precipitations, without any...

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Heavy rain management in Vienna, with the example of the Simmering Storage Basin

Crazy weather needs a proper sewer system

In response to the impact of climate change that has also long since become noticeable also in Europe, with extreme weather caprices and heavy rain...

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PANEL 5 | PODIUM 5

The next-generation material

R concrete: resource-saving concrete

The collaborative research project entitled “R Concrete – Resource-Saving Concrete – The Next-Generation Material” aims to identify ways to...

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Clinker-efficient cements

Increasing the robustness of concrete

The durability of building materials plays a crucial role in the construction of sustainable buildings or structures. This is where concrete can...

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Can concrete provide an appropriate solution?

Interim and final storage of nuclear waste

Final storage of nuclear waste in salt domes, which had been the only favored solution in the past few decades, was recently questioned in the course...

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PLENUM 2 | PLENUM 2

Where is the Arab world heading?

Between Allah and petroleum

The Middle East is currently faced with an extremely critical situation. Entire states are in the process of disintegration, and individual clans,...

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Potential applications in architecture

3D concrete printing

Additive manufacturing methods (“3D printing”, or “3DP”) have already gained a foothold in many industrial areas. So-called “3D printers” are also...

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Potential applications in structural engineering

3D concrete printing

The processing of cementitious materials is at the technological core of modern construction. In recent years, new construction techniques such as 3D...

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PANEL 6 | PODIUM 6

Technically uncritical but a visual nuisance

Small cracks in TT slabs

A manufacturer of TT slabs used for industrial and commercial halls is storing them outside (at the factory premises) for some weeks. Water runs...

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Lattice girders under cyclic loading

Fatigue of semi-precast slabs

Due to the high efficiency and flexibility of semi-precast slabs with lattice girders compared to in-situ concrete structures, the use of these slab...

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PANEL 7 | PODIUM 7

Market potential for lightweight concrete

Publicly assisted housing

The German residential sector is undergoing structural changes that will soon be very similar to the gentrification trend in the United States. Many...

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New tool for the lightweight concrete industry

The new earthquake manual

According to present-day requirements, modern masonry buildings made of lightweight concrete blocks must be perfectly designed as far as architecture,...

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What does it mean for fastening elements in concrete and masonry?

ECJ judgement on C-100/13

According to ECJ judgment in case C-100/13 delivered on October 16, 2014, the Federal Republic of Germany is no longer allowed to impose additional...

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PANEL 8 | PODIUM 8

Possible arrangements and limitations for client and manufacturer

Product-neutral tendering

The intention of the public procurement law is to meet the procurement need of a public client at an economical price. In which case is the public...

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Liability risks and other consequences

The new construction contract law

For a long time, it has been quite problematic in legal practice that the regulations governing the contract law for work concerning construction...

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Potentials and challenges for the Labor Market

Refugee Migration in Germany

From a quantitative perspective, the 2014–15 refugee migration to Germany is historically unique. The majority of incoming asylum seekers are young:...

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Employment and Training

Integration of Refugees in Practice

“Young Refugees in Training” and “Refugees in Training and Employment” are the projects for integrating refugees into the training and labor market of...

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BetonQuali: Information and Qualification Platform

From semi-skilled to skilled worker

Shortage of skilled workers and digitalization are two of the trends that will present the working world with enormous challenges. These are precisely...

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New regulations for temporary work and the contract for work

Good things come to those who wait?

The topic “deployment of external staff” does not come to peace. After the confusion caused by the German Minimum Wage Law introduced in 2015,...

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PANEL 10 | PODIUM 10

New possibilities

Fire protection design of columns

DIN EN 1992-1-2 [1], Method A
DIN EN 1992-1-2 [1], section 5.3.2 contains two possibilities for a simplified fire protection design given in  table...

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Flat slabs and foundations

New punching shear reinforcement systems

The structural design of flat slab systems is usually governed by the punching shear resistance of the slab. To achieve a sufficient punching shear...

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Questions and answers

Punching shear design in practice

With introduction of Eurocode 2 in Germany (DIN EN 1992-1-1/NA [1] [2]) in 2012, the punching shear design provisions for flat slabs and column bases...

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PANEL 11 | PODIUM 11

Hybrid truss/plane shell structures

Dry joined with high-performance concrete

The priority program of the German Research Foundation (DFG) – within the scope of the project “Lightweight building with concrete” – examines the...

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Thermally insulating concrete demonstrator for innovative components and energy-efficient concepts

Buildings with networked energy systems

Researchers at the Institute of Construction Materials (IWB) of Stuttgart University developed a concept that enables validation of theoretical...

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Robot-supported injection technology

Additive manufacturing of concrete elements

Additive manufacturing has evolved in recent years from its origins of rapid prototyping to a future-oriented production technology. Fully functional...

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PANEL 12 | PODIUM 12

Technical standards and project examples

Fastening systems for cast stone façades

The use of cast stone opens up a large number of design options in the construction of façades and enables an almost unlimited number of shapes and...

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FOREWORD | VORWORTE

Dear European colleagues,

I have the pleasure to welcome you all to this 61st BetonTage edition not only as the president of BIBM, the federation of the European precast...

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PANEL 13 | PODIUM 13