Kemna (company)
| Kemna Bau Andreae GmbH & Co. KG
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| legal form | GmbH & Co. KG |
| founding | 1867 |
| Seat | Pinneberg |
| Number of employees | 1992 |
| sales | 443 million euros |
| Branch | Traffic route construction |
| Website | www.kemna.de |
| As of December 31, 2018 | |
The Kemna Bau Andreae GmbH & Co. KG is a German group of companies based in Pinneberg . It employs more than 1900 people and is one of the largest construction companies in Germany. The company was founded in 1867 under the name J. Kemna - Breslau as a steam engine , steam tractor , locomobile , steam plow , road roller and tractor factory in Wroclaw . Today Kemna Bau Andreae GmbH & Co. KG is the largest German road construction company with headquarters in Germany and the second largest in Germany as a whole.
history
J. Kemna - Wroclaw
The company's founder Julius Kemna originally came from Barmen , where he was born in 1837. In 1867 he started his company in Breslau, which initially manufactured agricultural machinery. He cooperated with Fowler for a while, but soon decided to build his own traction engines and steam plows. Following the example of Fowler, Kemna also built single-cylinder saturated steam engines , but soon he recognized the advantages of high-pressure steam technology with superheated steam and the compound or composite construction, which is capable of significantly higher performance with lower consumption of heating material and water. With a feeling for future developments, Kemna recognized that the steam engine was not only revolutionary for industry, but also in agriculture and road construction. Kemna died in 1898 and left his employees 30 marks for each year they were employed; enough money for many to build a house. In 1908, Kemna presented a further development of the compound system: a superheated steam plow locomotive with spanned steam and two high-pressure cylinders.
20th century
At the beginning of the 20th century, the Julius Kemna company became the "leading steam plow company on the European continent and penetrated the world market into the monopoly of English companies". The company developed into a "large industrial enterprise" at the turn of the century. Due to capacity expansion in 1905 around 900 workers were employed on a 52,000 m² industrial site.
The First World War led the Army Command to demand that tractors should be standardized across manufacturers in order to get the spare parts problem under control. Kemna then presented the EM (standard machine) road locomotive, which was soon copied by various manufacturers in the German Empire. Many of these machines were delivered to all of Europe as reparations after the First World War. In 1919 Kemna advertised its steam trucks, which were road locomotives with two trailers that were able to "transport 300 to 400 quintals with a range of up to 30 kilometers at a speed of 5 to 10 km / h ". Steam plowing with two locomotives , between which the plow was pulled back and forth, was gradually replaced in the 1920s by the tractor, which was independent of coal and water. The company adjusted to this market situation by relocating production. In 1923, Kemna's company was the first in Germany to bring a road roller with a crude oil engine (Deutz diesel engine) onto the market.
Three Kemna machines can still be viewed in museums in Sinsheim and Berlin as well as in the Polish National Museum of Agriculture near Posen , and another is freely accessible in the village of Veitsch in Styria (Austria). Kemna offered threshing machines and other devices under the Wratislawia brand . After the First World War, Kemna also manufactured tractors with internal combustion engines . Steam road rollers were also built at Kemna, which were soon equipped with combustion engines after the First World War. Kemna road rollers were known throughout Europe. After their son Erich Kemna joined the company, the company increasingly turned to road construction. An asphalt mixture was offered for this as early as 1910. The location for the road construction division was relocated to Berlin.
During the Second World War , the factory in Wroclaw was completely destroyed; Due to the cession of Silesia to Poland, the J. Kemna plant was closed in 1945. In Poland, construction machinery, loaders and rollers continued to be manufactured after 1945 under the FADROMA Wrocław company.
Hot steam tipping plow , built in 1921
Kemna factory in Wroclaw
Many Kemna machines can still be seen today.
After the Second World War
After the Second World War, the Hatra factory in Lübeck-Travemünde continued to build Kemna-Walzen, but the name Kemna soon disappeared on the machines. With this, vehicle construction under the name Kemna ended forever.
The road construction area of Kemna in Berlin was under the control of the victorious powers , which is why Kemna Baugesellschaft mbH was founded in Hamburg from a previously rather insignificant branch . After the allied control ceased to exist, the Berlin operations were reintegrated. Mastic asphalt was offered again, and methods of rationalizing road construction were also developed. Plants were bought and the company grew steadily. The name Kemna still exists today under the company name KEMNA BAU Andreae GmbH & Co. KG .
Kemna Bau Andreae
Today's Kemna Bau Andreae GmbH & Co. KG and its subsidiaries employed more than 1900 people in 2018. The annual turnover in 2018 was over € 440 million. The company is one of the 25 largest German construction companies.
Kemna Bau Andreae GmbH & Co. KG is a company with a vertical structure. In addition to many branches, the subsidiaries and associated companies include Gehrken Straßen- und Tiefbau GmbH & Co.KG, VSB infra, Guss-Asphalt Wilfried Ceh GmbH, Tesch Straßenbau GmbH & Co.KG, Vereinigte Asphalt Mischwerke GmbH & Co, ASPA GmbH, NORDHARZ ASPHALT-MISCHWERKE, DAM Delitzscher Asphaltmischwerk GmbH, MITTELDEUTSCHE BAUSTOFFE GmbH, Amiro GmbH and Ancandra Trans SR L, Malkus GmbH, Erdtrans Hamburg GmbH & Co. KG and ServiTra GmbH & Co. KG.
In 5 quarries and 10 gravel works, minerals are produced either directly by Kemna or through a majority shareholding. Kemna Bau Andreae GmbH & Co. KG produces mixed material for asphalt road construction in 13 group-owned asphalt chippings plants and 26 plants of 8 affiliated companies. Kemna Bau Andreae GmbH & Co. KG handles all services related to traffic route construction including some specific and ancillary work in the area of paving in 9 construction companies and 4 affiliated companies. According to its own statements, the company uses the "recycling of asphalt surfaces, the sealing and reinstallation of polluted road rubble, the processing of old materials for reuse as classified building materials" in order to be sustainable.
literature
- Hans-Henning Zabel: Kemna, Julius. In: New German Biography (NDB). Volume 11, Duncker & Humblot, Berlin 1977, ISBN 3-428-00192-3 , p. 482 ( digitized version ).
Web links
Individual evidence
- ↑ Federal Gazette: Consolidated financial statements for the financial year from January 1, 2018 to December 31, 2018, accessed on May 31, 2020
- ↑ a b Overview of construction companies - The German construction industry. Retrieved March 9, 2020 .
- ↑ KEMNA - Verkehrswegebau I road construction company. Retrieved July 21, 2020 .
- ^ German biography: Kemna, Julius - German biography. Retrieved July 18, 2020 .
- ↑ KEMNA BAU, the organization of the company. Retrieved March 9, 2020 .
- ↑ KEMNA BAU, the company introduces itself. Retrieved March 9, 2020 .