A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early age strength assessment for high rise buildings
This paper presents a case study made on two high-rise buildings in Zagreb, the capital of Croatia. Two different non-destructive test (NDT) methods (pull-out testing with a Lok-test, and Schmidt hammer) were used for early age strength assessment. Parallel with NDT concrete strength tests cube testing was also done. In this paper the results are presented of testing early compressive strength carried out on the floor slabs in two high-rise buildings. Parallel testing with the Lok-test, Schmidt hammer and 150 mm cubes in the laboratory was performed. On the basis of the test results obtained, the conclusions can be made as follows: - Prior to starting in-situ testing with a Lok-test, correlation curves obtained from the manufacturer should be verified. - The reliability of testing can be influenced by planning the number and location of the tests carried out using the Lok-test method depending on the type and importance of the structure. - The results of concrete compressive strength estimation with the Lok-test are more reliable than those obtained with the Schmidt hammer. - Lok-test pull-out method is a good indicator of actual compressive strength of the concrete in structure. - In building construction, early compressive strength can be estimated by using the nondestructive test methods. In this way, early striking of props and formwork can contribute to faster and more economical construction.
Early age strength assessment for high rise buildings
This paper presents a case study made on two high-rise buildings in Zagreb, the capital of Croatia. Two different non-destructive test (NDT) methods (pull-out testing with a Lok-test, and Schmidt hammer) were used for early age strength assessment. Parallel with NDT concrete strength tests cube testing was also done. In this paper the results are presented of testing early compressive strength carried out on the floor slabs in two high-rise buildings. Parallel testing with the Lok-test, Schmidt hammer and 150 mm cubes in the laboratory was performed. On the basis of the test results obtained, the conclusions can be made as follows: - Prior to starting in-situ testing with a Lok-test, correlation curves obtained from the manufacturer should be verified. - The reliability of testing can be influenced by planning the number and location of the tests carried out using the Lok-test method depending on the type and importance of the structure. - The results of concrete compressive strength estimation with the Lok-test are more reliable than those obtained with the Schmidt hammer. - Lok-test pull-out method is a good indicator of actual compressive strength of the concrete in structure. - In building construction, early compressive strength can be estimated by using the nondestructive test methods. In this way, early striking of props and formwork can contribute to faster and more economical construction.
Early age strength assessment for high rise buildings
Bewertung des frühen Zustands für Hochhausgebäude
Skazlic, Marijan (author) / Germann Petersen, Claus (author) / Krnjak, Zoran (author)
2009
6 Seiten, 5 Bilder, 5 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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