Comparison of Evaluation Tests for Compressive Strength of Structural Concrete

  • Jiachuan Yan Key Lab of Structures Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, China
  • Kaihua Liu Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, 150090, China
  • Chaoying Zou School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
  • Yilung Mo Department of Civil and Environmental Engineering, University of Houston, 4800 Calhoun, Houston, 77204, USA
  • Jinping Ou Key Lab of Structures Dynamic Behaviour and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, 150090, China

Abstract

The concrete strength of existing structures is an important index in the aspects of safety insurance, evaluation, and strengthening of existing structures. However, different testing methods are used to evaluate the concrete strength, which provide information with different reliability, and the results are thus difficult to be unified. This paper investigated the evaluation tests for compressive strength of structural concrete. The compressive strength of field-cured, standard-cured and core samples, and the rebound method calculated strength of structural concrete were obtained. The results showed that the compressive strength of field-cured and core specimens, and the rebound method calculated strength cannot reach that of standard-cured specimens at the equivalent age of 28 days. The compressive strength of standard-cured and field-cured specimens can be used to represent that of cores for evaluating the quality of structural concrete. All four strength indexes increased in a logarithmic trend with the increasing equivalent age.

Keywords: compressive strength, standard-cured, field-cured, rebound method, core drilling method
Published online
2020-03-12
How to Cite
Yan, J., Liu, K., Zou, C., Mo, Y., & Ou, J. (ONLINE). Comparison of Evaluation Tests for Compressive Strength of Structural Concrete. Periodica Polytechnica Civil Engineering. https://doi.org/10.3311/PPci.12545
Section
Research Article