Correlation among selected fracture-mechanical parameters of concrete obtained from experiments and inverse analyses

Correlation among selected fracture-mechanical parameters of concrete obtained from experiments and inverse analyses

WoS Article

The correlations among selected parameters of concrete were investigated for concrete mixtures of the strength classes C20/25, C25/30, C30/37, C40/50 and C50/60. The focus was laid on correlations between basic mechanical parameters such as compressive strength, tensile strength and modulus of elasticity as well as parameters related to concrete fracture, represented here by specific fracture energy. Laboratory tests examining the fracture behaviour and mechanical properties were carried out in order to determine the fundamental concrete parameters. In particular, standard compression tests on cubic specimens and three-point bending tests on beams with central edge notch were performed. Additional material parameters were identified using the inverse analysis technique. Finally, correlation factors between different parameters of concrete were identified using the rank-order correlation method.

The correlations among selected parameters of concrete were investigated for concrete mixtures of the strength classes C20/25, C25/30, C30/37, C40/50 and C50/60. The focus was laid on correlations between basic mechanical parameters such as compressive strength, tensile strength and modulus of elasticity as well as parameters related to concrete fracture, represented here by specific fracture energy. Laboratory tests examining the fracture behaviour and mechanical properties were carried out in order to determine the fundamental concrete parameters. In particular, standard compression tests on cubic specimens and three-point bending tests on beams with central edge notch were performed. Additional material parameters were identified using the inverse analysis technique. Finally, correlation factors between different parameters of concrete were identified using the rank-order correlation method.

Correlation factors, fracture-mechanical parameters, concrete properties, fracture tests, inverse analysis, experimental testing

Correlation factors, fracture-mechanical parameters, concrete properties, fracture tests, inverse analysis, experimental testing

ZIMMERMANN, T.; LEHKÝ, D.; STRAUSS, A.

2017

03.04.2016

Berlin, Německo

1751-7648

Structural Concrete

17

6

Federal Republic of Germany

1094

1103

10

SKV_dodatek
Zimmermann_et_al-Structural_Concrete