In:
Beton- und Stahlbetonbau, Wiley, Vol. 114, No. 11 ( 2019-11), p. 847-856
Abstract:
Consideration of long term effects in the assessment value of concrete compressive strength – Evaluation of the transferability of approaches defined for the design of new structures Prof. Hegger made a major contribution to development of Eurocode 2 as the German representative in the European Committee for Standardisation CEN/TC250/SC2/WG2 and in his function as chairman of the related German mirror committee. In the next generation of Eurocode 2 rules for the assessment of existing structures will be included, too. For this purpose many different topics on the basics of the design of concrete structures have to be clarified. The aim of the present study is the evaluation of the effect of long term service loading on the factor α cc (coefficient taking account long term effects). For the design of new structures the factor α cc = 0,85 applies. Though, for the assessment of existing structures, based on the investigation of drill cores taken from the structure, the factor α cc is not defined up to now. The main topics which have be evaluated are the effect of subsequent hardening and preload on the compressive strength of drill cores. Generally, it has to be taken into account, that the high level of scattering of the in‐situ concrete compressive strength is opposed to a satisfactory and scientific based verification. However, based on the investigations conducted, the consideration of long term effects on the assessment value of the concrete compressive strength can be recommended.
Type of Medium:
Online Resource
ISSN:
0005-9900
,
1437-1006
DOI:
10.1002/best.v114.11
DOI:
10.1002/best.201900049
Language:
German
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2151239-5
detail.hit.zdb_id:
240053-4
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