Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of in-situ strengths and quality tests of concrete
Investigations were carried out on structures and components at more than 20 construction sites and storage yards of precasting factories meeting normal standard requirements with regard to accuracy in production and placement of concrete. It resulted therefrom that in most of the structures investigated the structural strengths after 28 days attained on an average the theoretical concrete quality; fractile values were below by about 20 to 30%. It has been explained that the specification required in DIN 1045 E with regard to structural strengths can, with some accuracy, be maintained without any difficulty, but that it should suitably be completed by stating a fractile. On the basis of the test results it was recommended to modify the specified strength of higher concrete qualities stated in DIN 1045 E as a constant value beta [R] = 0.7 . beta W[28]. ; Peer reviewed: No ; NRC publication: Yes
Comparison of in-situ strengths and quality tests of concrete
Investigations were carried out on structures and components at more than 20 construction sites and storage yards of precasting factories meeting normal standard requirements with regard to accuracy in production and placement of concrete. It resulted therefrom that in most of the structures investigated the structural strengths after 28 days attained on an average the theoretical concrete quality; fractile values were below by about 20 to 30%. It has been explained that the specification required in DIN 1045 E with regard to structural strengths can, with some accuracy, be maintained without any difficulty, but that it should suitably be completed by stating a fractile. On the basis of the test results it was recommended to modify the specified strength of higher concrete qualities stated in DIN 1045 E as a constant value beta [R] = 0.7 . beta W[28]. ; Peer reviewed: No ; NRC publication: Yes
Comparison of in-situ strengths and quality tests of concrete
Lewandowski, R. (Autor:in) / National Research Council of Canada. Division of Building Research (Autor:in)
01.01.1976
doi:10.4224/20358593
Paper
Elektronische Ressource
Englisch
DDC:
690
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