Alfred Hummel
Alfred Hummel (born September 7, 1891 in Heilbronn ; † April 8, 1973 in Aachen ) was a German civil engineer and building materials scientist and a leading expert on concrete in his day .
Live and act
Hummel was the son of a senior teacher and went to school in Heilbronn. He began studying architecture at the TH Stuttgart in 1912 , which was interrupted by World War I when he became a soldier in 1915. After the war he continued his studies at the University of Karlsruhe , this time in civil engineering , and was continued in 1923 Emil Probst with a dissertation on volume changes of concrete doctorate . In 1928 Hummel became head of the concrete department in the laboratory of the Association of German Portland Cement Manufacturers in Berlin-Karlshorst and from 1935 headed the non-metallic, inorganic building materials department at the State Materials Testing Office in Berlin-Dahlem (with the title of professor). He also held lectures at the TH Berlin-Charlottenburg , where he became an associate professor in 1946 . After the war, Hummel lived under difficult conditions and dealt with the recycling of rubble for concrete during reconstruction. From 1948 until his retirement in 1959 he was full professor for building materials science at RWTH Aachen University and director of the institute for building research, which he had initiated.
In Germany, Hummel introduced the F-value (fineness number according to Hummel) for concrete, which describes the dependence of the strength of concrete on the grain composition of the aggregate (originally in the USA by Duff Andrew Abrams 1918). He researched the influence of the pore number on the strength and the production and testing of concrete (and mortar), its elasticity and shrinkage and creep of concrete (and its measurement) and many other concrete properties and types.
His Beton ABC (first in 1935) was a standard work for a long time and has been translated into many languages. He also wrote a book on building material tests (first in Berlin 1949).
In 1956, Hummel received the Emil Mörsch commemorative coin and later the Michaelis commemorative coin from the Association of German Cement Works, of which he was an honorary member. In addition, he was made an honorary member of the Belgian Concrete Block Association and in 1954 an honorary doctorate from the TH Munich. In 1960 he received the Great Federal Cross of Merit .
Hummel was an anthroposophist .
Fonts (selection)
- Measurement methods for the shrinkage, swelling and creeping of concrete , in: Handbuch der Materialprüfung , Volume 3, 1941, pp. 493-513
- The ABC of Concrete: Heavy and Lightweight Concrete , 11th edition, Ernst and Son 1959
- with Kurt Charisius: Building material tests: a guideline for the testing and assessment of the most important non-metallic, inorganic building materials , Düsseldorf: Werner, 3rd edition 1957
- with B. Wedler: Rubble recycling , Berlin 1946
- with K. Wesche: Behavior of concrete in lake water , Berlin 1956
- with others: Strength and deformation of unreinforced concrete , Berlin 1968
- numerous articles on concrete in the concrete calendar and in the cement paperback.
literature
- Justus Bonzel: Alfred Hummel died , beton 4-1973, p. 138
- Jochen Stark, Bernd Wicht: History of building materials . Springer-Verlag, 2013
Web links
| personal data | |
|---|---|
| SURNAME | Hummel, Alfred |
| BRIEF DESCRIPTION | German civil engineer |
| DATE OF BIRTH | September 7, 1891 |
| PLACE OF BIRTH | Heilbronn |
| DATE OF DEATH | April 8, 1973 |
| Place of death | Aachen |