Content

NEWS | NACHRICHTEN

PRECAST ELEMENT PRODUCTION | FERTIGTEILHERSTELLUNG

EVENTS | VERANSTALTUNGEN

CSG ENGINEERING

Technical Mission to Italy 2019 and US 2020

From the 15th to the 19th October, the seventh edition of the Technical Mission in Italy took place, an international event organized by CSG Engineering and open to all precast professionals and...

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SERVICE | SERVICE

Short facts | Kurzmeldungen

SCHÖCK

New design software for concrete façades

The company Schöck Bauteile GmbH has released a new design software: Schöck Isolink for concrete façades. The program is now available for download at no charge. The new software has been extended by...

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FOREWORD | VORWORTE

Think ahead!

With the high-tech strategy, the German Federal Government pursues the goal of interlinking the industrial production by means of modern information and communication technology. The technical basis...

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Distinguished guests,

The construction sector, and the manufacturers of concrete and precast concrete elements in particular, are challenged in special ways by the requirements imposed by climate change. In this context in...

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Dear European colleagues,

The European Green Deal – Threat or opportunity?

On behalf of BIBM, the Federation of the European Precast Concrete Industry, I welcome all of you to the 64. BetonTage congress.One thing is clear: Europe decided to take the lead in the fight against...

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Ladies and Gentlemen,

Thank you very much for giving me the opportunity to participate in the opening of the 2020 BetonTage congress. From my point of view, this event is well-known and internationally respected for its...

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PANEL 1 | PODIUM 1

Concretes with new, clinker-efficient cements

Durability properties

In the next version of DIN EN 197-1, additional standardized clinker-efficient cements will be added with CEM II/C-M and CEM VI. CEM II/C-M cements contain at least 50 M.-% clinker and CEM VI cements,...

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PANEL 2 | PODIUM 2

Enhanced use of reclaimed aggregates in concrete

What about a little bit more?

Residual quantities of fresh concrete are constantly accumulating in ready-mixed concrete and precast concrete plants; these residuals are often treated in fresh concrete recycling systems. These only...

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Coal flyash substitute in concrete production

Powders from brick rubble

The abandonment of fossil fuels for energy generation results in serious changes in the secondary raw materials economy. In concrete production, this applies most of all to coal flyash, which is used...

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Concrete technology

Measures to reduce CO2 emissions

More than 6 % of the worldwide carbon dioxide (CO2) emissions caused by humans are associated with the production of cement and concrete. It is a known fact that a purposeful substitution of the burnt...

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PANEL 3 | PODIUM 3

Modular concrete construction

Development of an innovative modular bridge

In Germany, modular bridge construction methods have so far been applied only to a limited extent compared to other European countries or North America. However, public road authorities are...

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PANEL 4 | PODIUM 4

PANEL 5 | PODIUM 5

Vacuum insulation for sandwich wall panels

Load-transferring and switchable

Improving the energy efficiency of buildings is of central importance in view of rising energy prices, increasingly scarce fossil energy reserves and the continually advancing greenhouse effect....

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PANEL 6 | PODIUM 6

Unbound paving blocks and slabs

Factors influencing shear resistance

We repeatedly see vertical and horizontal shearing in particular on more heavily frequented and more heavily loaded block pavements, which frequently results in damage to the paving blocks and impairs...

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BuGa 2019, Heilbronn

Graphic concrete walls

In recent years, the use of concrete as architectural element, in addition to application in the sector of structural-engineering-related construction, is experiencing a true renaissance. The reasons...

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Cast stone for the German Embassy in Paris

Floors, staircases, special elements

The eight-story building housing the chancery of the German Embassy in Paris on Avenue Franklin D. Roosevelt was built from 1960 to 1963 as a reinforced-concrete frame structure. It was completely...

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Karlsruhe subway stations

Cast-stone façades and floors

In the absence of daylight, subway stations quickly become dark and spooky places. The planners of the new Karlsruhe Metro, the Munich office of Allmann Sattler Wappner Architects, wanted to counter...

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Digitalization at the concrete block factory

Strategic implementations for practitioners

Over a period of four years (2015 to 2019), one of the two production lines was replaced in several construction sections of different sizes. Particular attention was paid to the fact that the best...

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PANEL 7 | PODIUM 7

New approaches for testing and evaluation under vibration

Stability of modern concrete

BackgroundThe notion of “modern” or contemporary concretes is used as a reference to concretes with relevant PCE-based plasticizer ratios. Nowadays, such types of concrete are used not only for...

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Alternative binders (geopolymer concrete, calcined clays) in precast construction

Production, testing, approvals and practical use

In the context of mitigating climate change, one of the key demands is to reduce the CO2 emissions generated in the production of cement and the concrete containing it. However, since the process of...

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Infra-lightweight concrete defined as lightweight-aggregate concrete with open structure

Standardized use from precast to cast-in-place applications

Infra-lightweight concrete (ILC) originally represented an evolutionary stage of structural lightweight concrete (LC) in accordance with DIN EN 206 and DIN EN 1992. This new type of concrete had a...

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Background and test methods

Classification of ultra-high-performance concrete

The DAfStb Guideline on “Ultra-High-Performance Concrete” will significantly expand the range of structural concretes compared to DIN EN 206. Compressive strength and axial post-cracking tensile...

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Accelerating concrete hardening

Alternatives to heat curing

In the production of precast elements, special focus is given to optimizing early strengths. High early strengths are a prerequisite for two-shift or three-shift operation with the corresponding...

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PANEL 8 | PODIUM 8

Concrete powder printing process

The next level

At times, concrete has been regarded as being cold and not very creative. But now this construction material is no longer used only for building massive structures, but is often employed by architects...

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Testing and analysis of the structural behavior

3D-printed reinforced-concrete elements

Additive manufacture (AM) and/or 3D printing with concrete represents a highly innovative and future-oriented production technology for the construction industry. For one, linkage with modern...

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PANEL 11 | PODIUM 11

Winner of the GdW* tendering procedure for serial and modular housing construction

Why we have developed the Optimus system

In the summer of 2008, we (B. Hullak and J. Rannow) decided to turn two small architectural offices into one larger firm. Meanwhile, after numerous loops, tests, successes and failures, and as a...

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An innovative concrete-wood composite ceiling for solid structures

Acoustic and environmental properties

The acoustic properties of wooden-beam and concrete ceilings differ systematically. More specifically, the sound reduction factor of a (cementitious) floating screed on a wooden ceiling is...

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PANEL 12 | PODIUM 12

Material development

Duct covers made from carbon-reinforced concrete

Carbon-reinforced concrete is suitable for a number of applications, including façades, walls, columns, beams, floor slabs, and modular buildings, as well as for repairing and upgrading existing...

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For maintaining our drinking water and sewer networks

Keep an eye on the pipes!

In recent decades, around 215,000 km of public sewer and drinking water networks have been laid in the underground of Bavaria’s towns, cities and municipalities. The public pipeline network generally...

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Innovative precast high-performance concrete components

Development of an effective automatic flood barrier

Current climate change scenarios assume not only a temperature increase but also a growing number of torrential rain events. Automatic flood protection systems installed at the entrances and...

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Climate change and torrential rain in Germany

Challenges for the construction industry

In Germany, global warming is likely to result in increasingly extreme weather events, more frequent and heavier precipitation, and extended heat and drought periods, combined with a generally higher...

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Slip-form paving in road construction

Potentials for future infrastructural projects

The German road infrastructure comprises about 13,000 km of federal motorways and 39,000 km of main roads. In future, the mobility of goods and people will be a cornerstone for ensuring the continued...

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PANEL 13 | PODIUM 13

Non-reinforced ultra-high performance concrete (UHPC)

A cover for sandwich wall panels

Multi-layer reinforced-concrete wall panels comprise a supporting and facing shell made of reinforced concrete as well as an interior insulating layer. The facing shell, which forms the façade, has a...

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Lattice girders and punching shear reinforcement under fatigue stress

Verification concept on the basis of S-N curves

A verification against fatigue must be provided for reinforced concrete floors under frequently recurring stress, e.g., due to forklift truck traffic. This also applies to structural components...

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DafStb Code of Practice

Members constructed of hollow-core slabs

Work on the DafStb Code of Practice on precast hollow-core slabs [1] began in November of 2017. The Code of Practice is planned to consist of two parts:Part 1: Reinforced-concrete hollow-core slabs...

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Carbon concrete bridges

Dimensioning and realization

Bridge construction is a reasonable field of application for carbon-reinforced concrete. The corrosion-resistant reinforcement requires a small concrete cover. Moreover, a protective layer can be...

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Highly stressed carbon-fiber reinforced concrete members

Research on long-term behavior

A major part of the damages occurring at steel-reinforced concrete structures is caused by the corrosion of the steel reinforcement. Cost-intensive and time-consuming repair works or new replacement...

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Prefabricated prestressed sandwich floors

Reducing the material consumption of flat floor slabs

Over the years, the development of reinforced-concrete floors for multi-story building construction has given rise to a large number of different designs. When reinforced-concrete construction was...

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PANEL 14 | PODIUM 14

Unexpected developments in case law

Vacation law and overtime hours

In the past ten years, no stone was left standing in German vacation law; this was ensured collaboratively by CJEU and BAG (the German Federal Labor Court). Certainties, having been true for decades,...

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Innovation management in stable markets

How does it work and where to start?

Stable markets? Something like this does not exist.What we can learn from the case of Readymix. Do you still remember the Readymix brand name? One of the really big brands in the field of ready-mixed...

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PANEL 15 | PODIUM 15

The problem of water scarcity

Projects for water reuse

Whilst the European Union has been promoting the reuse of treated wastewater in the Urban Waste Water Treatment Directive since as early as 1991, some maps show even today that the number of regions...

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Small wastewater treatment systems

Dealing with operational malfunctions

Approximately 10 % of the population in Germany is not connected to a communal sewer system and/or to a central sewage treatment plant. They must therefore implement decentral sewage treatment...

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Example Australia

Australian Standards AS/NZS 1546.1 and AS 1546.3

The release of the Australian Standard AS 1546.3:2017 “On-site domestic wastewater treatment units – Part 3: Secondary treatment systems” superseded the version AS 1546.3:2008. The current standard AS...

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PANEL 17 | PODIUM 17

In-situ concrete compressive strength in existing structural frameworks

New methods according to E DIN EN 13791:2018

Existing structural frameworks need to be recalculated in accordance with currently applicable standards owing to building conversion and subsequent changes in load levels. Concrete compressive...

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New guideline for structural components made from precast hollow-core slabs according to DIN EN 1168

New verification method for flexible support

The judgment issued by the European Court of Justice on 16 October2014 in Case C-100/13 means that, since November 2016, the DIBt has no longer been in a position to grant national technical approvals...

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State of research and prospects

Optimizing the shear design of slabs

A significant amount of the used concrete volume is applied to slab structures where shear design is often determinative of the dimensioning. Since applying shear reinforcement to slabs is elaborate,...

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PLENUM 2 | PLENUM 2

Building component planning for the National Museum of Qatar in Doha

Fiber-reinforced concrete panels for the desert

In the course of the expansion of Qatar’s capital Doha to a global center, to a global center for finance, culture, and tourism, the new National Museum of Qatar was built according to a design by...

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PLENUM 3 | PLENUM 3

The city as raw materials source

Placing recycled concrete on the market

Diminishing raw materials, dense traffic and complex logistics are much-discussed topics. These issues are accompanied by the goals of minimizing negative environmental effects, closing materials...

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Patents | Patente

Precast tub

(10) WO 2019/231939 Al(22) 29.05.2019)(43) 05.12.2019(57) A single unit precast concrete tub (1) formed out of concrete wherein a plumbing system (10) and electrical system (11) are encased within...

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Coating agent for concrete structures

(10) US 2019/0390083 Al (22) 22.01.2018(43) 26.12.2019(57) A coating agent is disclosed, which is suitable for concrete structures. The coating agent comprises: (A) a diorganop­olysiloxane capped at...

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Brace for a precast concrete panel

(10) US 2019/0368210 Al(22) 06.06.2019(43) 05.12.2019(57) An adjustable brace to support a precast concrete panel in a substantially vertical orientation. The adjustable brace includes a first...

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Spacer for concrete reinforcements

(10) EP3341535 (A1) (22) 12.10.2019(57) The present invention includes spacing elements for concrete reinforcements. The spacing elements provided herein can be easily stacked, thereby reducing...

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Device for manufacturing concrete molds

(10) DE102015103828 (A1) (22) 13.12.2019(57) Es wird eine Vorrichtung (VO) zur Herstellung von Betonformteilen in einer Formmaschine beschrieben, die ein Formoberteil (FB) mit einer...

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