Issue 02/2021

Our life has been restricted in many areas of society since March 2020. In particular, personal encounters are subject to special restrictions.We had celebrated the leading congress of personal...

Unfortunately, the 65th BetonTage cannot take place in the Edwin-Scharff House as previously. Instead, the organizers are forced to resort to a purely virtual event. For us participants, the BetonTage...

Structural precast components are primarily used in conventional industrial and commercial construction. They form the system of load-bearing members of buildings, including roof trusses,...

In the past few years, the requirements for fair-faced and architectural concrete seem to have become more and more demanding. But is this really the case? What we do notice is that appointed experts...

“Off-the-shelf” solutions are no longer possible when combining a sophisticated, unique architectural design with a load-bearing architectural concrete façade system. What is required, though, is a...

Due to an excellent price-to-performance ratio and the global availability of all raw materials, cement and concrete are, in terms of mass, by far the most important construction materials. The...

The Interreg NWE SeRaMCo (Secondary Raw Materials for Concrete Precast Products) EU research project – involving eleven international partners from industry and research and a total funding amounting...

The future belongs to rapid construction. To enable this, structural construction elements must be entirely prefabricated. They must be light and their quality ensured. All that would need to take...

The first concrete buildings being printed in Germany have shown that digitalization found its way into the construction site and that the future has arrived in the construction industry as well....

The reduction of CO2 emissions, the decrease in resource consumptionand the transfer of our linear material flows into circular economies are the global challenges of our time. The construction...

Conservation of resources and sustainability are the current global objectives. Improvement of the CO2 balances of cements and concretes are in the focus of scientific studies. Increasing...

Global cement production currently amounts to about 4.4 billion tons per year. Unfortunately, this comes with a huge CO2 emission which represents approximately 7 % of total anthropogenic CO2 output....

Concrete construction is currently still responsible for approx. 5 – 7 % of global greenhouse-gas emissions. A noticeable reduction of these emissions can be achieved by reducing the Portland cement...

The future of the planet is assessed based on how we deal with the consequences of climate change, how quickly we develop ideas, technologies and measures and ultimately implement them. But one thing...

The future construction method must orient itself to many criteria: i.e., industrialized rapid construction, the use of RC material and the need for energy-efficient operation with natural resources....

The Helix is a tower indeed – not the Tower of Babel but a prime example of Dutch-Germancooperation. Despite the confined inner-citysite, the parties involved in this project succeeded in constructing...

The white concrete façade presented in this lecture forms part of a three-story building with a footprint of 52 by 26 meters designed by kadawittfeldarchitektur,an architectural practice based in...

The site of the former St. Vincenz State Hospital is located in the medieval city center of Paderborn, directly adjacent to the springs of the river Pader. Over a period of three years, the hospital...

In Germany, far more than half of the urban traffic areas, both in the municipal sector and private sector, are surfaced with block pavements and slab pavements. Despite the fact that comprehensive...

The construction methods of staircase systems for outdoor use are fundamentally different from those of indoor staircases. Contrary to indoor staircases, which need to be designed and dimensioned in...

Vibrating block machines require particular attention because their appropriate operation determines the productivity of the entire plant. During production, anomalies may occur on concrete products....

Geotextile construction methods, as a rule, replace natural non-renewable raw materials such as sand, gravel and crushed rock – including construction of block-paved traffic routes and surfaces....

Normative design regulations for masonry are continuously further developed, both on a national and international level. Continuous revision leads to increasing extension of the application scope of...

Lightweight concrete with open structure and lightweight aggregate is increasingly used for the construction of façades due to its excellent thermal insulation properties. Pumice, which occurs...

Thermal characteristics (particularly heat insulation) are increasingly being considered in building construction. A building’s total energy consumption during its life cycle comprises its...

Resource efficiency and ramped-up recovery and reuse are among today’s major challengesfor all raw-materials processing sectors. The construction industry in particular has a pivotalrole here. The...

Heliostats are collectors designed for point-focusing concentrated solar power plants. A large number of heliostats concentrate the incoming solar radiation onto a receiver located at the top of the...

Carbon-reinforced concrete is a composite material that has been studied extensively since 2014 within the landmark “C³ – Carbon Concrete Composite” research project [1] funded by the Federal Ministry...

Owing to the significant share of cement production, building with concrete generates about 8 % of global CO2 emissions while also contributing to the imminent worldwide depletion of sand and gravel...

The first-time application of the balanced-lift method for the bridgesover the Lahnbach and Lafnitz rivers in Austria proved that these prestressed concrete bridges with 2.0 m high bridge girders...

The Manateq headquarters in Doha consists of four buildings encompassing an inner courtyard that looks like an oasis. The ornamental façade structure surrounding and shading the building reflects the...

The new Raiffeisenbank building in the Swiss municipality of Oberriet,located close to the border, is a prime example of high-quality precastconcrete elements “made by CRE Panel”. The open white...

Starting with the German meat industry, the sector-specific prohibition of contracts for work and temporary employment services is under social and political discussion. These types of contracts are...

Job market consultation Structural change, digitization, shortage of skilled personnel – these are major challenges faced by companies already today. Job market consultation offered by the Employment...

Digitization can make many work processes in companies significantly more efficient and simpler. This applies equally to big playersand small companies. At the same time, however, this increases the...

All areas of society are being subjected to a stress test by the corona-virus pandemic, this also includes the legal system as well as the field of employment law. We have to cope with the new...

Fully bonded waterproofing systems are mainly used for sealingbasements and other underground concrete structures designed for high-grade use against groundwater ingress. This technology was used for...

Normally, the fresh concrete properties are specified in the planning stage of building structures – generally, these are just the exposure classes and strength classes. Then the consistency class and...

BIM models are usually not available as a basis of design for the redevelopment of existing structures. Capturing technologies such as laser scanning, photogrammetry or mobile mapping systems are...

The wide variety of different designations given to high-performance concretes, such as UHPC, UHPFRC, DFRCC, SHCC, RPC etc., reminds to biblical language confusion. Their approval procedures are no...

The new December 2020 version of the DBV Code of Practice on “injection hose systems and swellable fillers for construction joints” [1] again aims at planners, contracting parties and building...

Easy-to-process concretes (LVB) of flowable consistency (consistency classes F5 and F6) are especially suitable for manufacture of construction elements with complex geometry and a high percentage of...

The public sewage system in Germany has a total length of approx. 580,000 km. Several billion euros are invested in its maintenance every year, with the assessed sewer condition being the mainbasis...

Construction of underground pipelines increasingly takes place by trenchless construction, using, among other methods, hydraulic pipe jacking as well as microtunneling. The pipe-jacking machines can...

We know that concrete has many  strengths. We do also know that concrete  has a weakness. Its resistance to aggressive media, in particular, biogenic sulfuric acid is just this weakness that is...

Hygiene, groundwater protection and flood control are the foundations of our healthy lives and our wealth. This is not a given in all parts of the world. Because these things work well in Germany,...

The Association of Concrete Pipes and Reinforced Concrete Pipes (Fachvereinigung Betonrohre und Stahlbetonrohre e.V.; FBS) represents a total of 19 manufacturers of concrete duct systems in Germany....

In retrospect, traveling to the moon seems like child’s play in view of the challenge that humanity is facing today: a dramatic reduction in greenhouse gas emissions to achieve climate neutrality. The...

Innovative and efficient concepts are needed for rehabilitating and upgrading our ailing transport infrastructure. For the purpose of repairing such structures, a system is currently being developed...

As a concrete additive, fly ash has been an integral part of modern concrete formulations for many decades. It has often been used primarily to reduce cement consumption and thus production costs....

3D concrete printing as an additive manufacturing method (AM) is a pioneering technology that will significantly accelerate construction process industrialization. The concrete is built up layer by...

3D concrete printing is a digital manufacturing technology which provides the construction industry with both a fundamentally new freedom of design and the possibility of resource-efficient...

3D concrete printing is a digital manufacturing technology which, in future,will provide the construction industry with a fundamentally new freedomof design. In contrast to conventional manufacturing,...

Carbon-reinforced concrete on the basis of textile reinforcement is a future-oriented alternative to reinforced concrete. When a patent application was filed for reinforced concrete in 1867, textile...

The CPC construction method is based on the semi-finished CPC carbon concrete slab. The CPC slab is produced at the plant in thicknesses ranging from 20 mm to 69 mm and in sizes of up to approx....

In recent decades, the requirements for existing bridge structures increased significantly due to the strong growth of traffic volume and in particular due to the higher total vehicle weights. As a...

The guideline “Steel Fibre Reinforced Concrete” published by the German Committee for Reinforced Concrete (DAfStb) in 2012 regulates the punching shear design of steel fiber reinforced flat slabs with...

The punching shear behavior of centrically loaded column bases has already been investigated extensively in the past. However, in civil engineering structures, uneven stress distributions due to...

The formation of cracks is an inherent feature of reinforced-concrete construction. The width of any cracks occurring needs to be limited to a non-detrimental extent, however, in order to permanently...

D-regions are usually designed using strut-and-tie models (STM) [1]. For complex structural geometries, however, generating suitable STM is challenging. The flow of forces must be known, taking into...

Stud rails used as punching shear reinforcement in flat slabs are arranged radially in Germany. A crosswise arrangement in the layout of the reinforcement elements, as it is common practice in North...

The revised second edition of Heft 600 was published in November 2020. It provides updated commentaries to the content of DIN EN 1992-1-1, with National Annex DIN EN 1992-1-1/NA as well as...

An A1-Amendment [2] of Eurocode 2 – DIN EN 1991-1-2: “Structural Fire Design” [1] had been published in November of 2019. The new Annex C: “Buckling of columns under fire conditions”of this...

Developments in the field of non-metal types of reinforcement are emerging both in Germany with the C3 project (e.g. [1]), technical approvals and pilot projects, and in Europe with the incorporation...

Controlled concrete curing relies on specific moisture and temperature within the process environment that is conducive to the process. By controlling and influencing these factors in the early stages...

After having been general manager of the Syspro Quality Group (Syspro-Gruppe Betonbauteile e.V.) for more than 25 years, Dr.-Ing. Herbert Kahmer will cease his activities for reasons of age in the...

The Degewo housing corporation has realized a modern residential complex with 99 apartments on an overall gross floor area (GFA) of 12,750 m² using a serialized construction method – rental prices...

It is always about being just the one step ahead: having solutions already at hand when a market signals that the times demand something new. With BSM, mbk has an innovative cage-welding machine in...

Near Gdansk, Ebawe Anlagentechnik and Progress Maschinen & Automation, both subsidiaries of the Progress Group, have recently installed one of the most advanced precast concrete plants throughout...

Budapest-based Market Építö Zrt. is one of the major Hungarian contracting companies, specialized in the design and construction of industrial, public, commercial, and logistics facilities. In the...

SBM Mineral Processing and Ventur Group have a lot in common: a long-standing company tradition, highest demands on quality, sustainability and efficiency, technical sophistication, and the passion to...

The type of floor construction and the structural design are often important aspects in building with precast elements. Implementation with complex in-situ-cast floors or partially precast elements is...

A good 60 years after the foundation of the company, Markus and Stefan Tenwinkel are in charge of an up-and-coming medium-sized business that sees itself as a specialist for technical concrete...

(10) US 10 844 617 B1(22) 20.11.2018(45) 24.11.2020(57) A support brace having two complementary sections that are matingly received in the opposite sides of the opening of a window frame to be...

(10) AU2019258970 (A1) (22) 26.11.2020(57) The invention relates to a construction system using multi-layer prefabricated concrete elements, combining vertical elements (fig. 1) and horizontal...

(10) DE 10 2009 039 337 B4(22) 29.08.2009(43) 03.03.2011(45) 26.11.2020(57) Betonbauwerk aus einem bestehenden Betonbauteil (20) und einem an diesem über einen Beweh­rungsanschluss (10) anbetonierten...

(10) DE 10 2019 003 560 A1 (22) 21.05.2019(43) 26.11.2020(57) Die Erfindung betrifft ein Pflaster­steinsystem, vorzugsweise aus Beton, dessen Einzelsteine im Grundriss gesehen eine gerasterte...

(10) DE 10 2019 112 608 A1(22) 14.05.2019(43) 19.11.2020(57) Eine Betonfertigteilplatte (2) weist eine Bewehrung (4), insbesondere eine Textilbewehrung, und einen am Rand der Betonfertigteilplatte (2)...

(10) DE 10 2019 113 084 A1 (22) 17.05.2019 (43) 19.11.2020 (57) Die Erfindung betrifft ein Verfah­ren zur Oberflächenbearbeitung einer Gesteins- und/oder Betonoberfläche, welches dadurch...

(10) DE 10 2019 113 673 A1 (22) 22.05.2019(43) 26.11.2020(57) Die Erfindung betrifft ein Verfahren zur Herstellung eines Bauteils (1) aus einem mineralischen, hybriden Werkstoff, der bei einem...

(10) US 2020/0347589 Al (22) 20.04.2020(43) 05.11.2020(57) Concrete coupling assembly comprises a base holder for being attached to a concrete forming surface, the base holder including a central...

(10) US 2020/0354918 Al (22) 08.05.2020(43) 12.11.2020(57) Disclosed systems and methods may com­prise an array of coupled hollow boxes to support a concrete slab monolithically poured on the array....

(10) US 2020/0361117 Al (22) 22.11.2018(43) 19.11.2020(57) Device (1) for pressing a non-hardened concrete composi­tion (12) into a desired form, whereby the device comprises an upper plate (4) with...

(10) US 2020/0361118 Al (22) 13.07.2020(43) 19.11.2020(57) A concrete mold including a mold frame with a frame body and at least two rows of teeth formed on the frame body lying opposite one another...

(10) US 2020/0363392 Al (22) 06.02.2019(43) 19.11.2020(57) The present invention is directed to a smart porous concrete slab that utilizes sensors and electronic components to monitor the condition of...

(10) US D902,444 S(22) 24.01.2019(45) 17.11.2020(57) The ornamental design for a concrete building block, as shown and described.DESCRIPTION1. Concrete building blockFIG. 1.1 is a perspective view of...

(10) WO 2020/222313 A2(22) 24.04.2020; (43) 05.11.2020(57) The invention relates to the field of building and can be used in low-rise construction for erecting residential houses and public buildings...