Study on Characteristics of Ultrasound Amplitude for the Concrete under Stress

DOI

10.2991/ic3me-15.2015.321How to use a DOI?

Keywords

ultrasound examination; concrete; compressed state; the amplitude

Abstract

Cube concrete samples (150×150×150mm) of five ages (7, 14, 21, 28 and 35d) under different stress conducted the ultrasound examination by non-metallic detector and universal testing machine. The results show that the relationship curve of the stress and the ultrasound amplitude can be divided into four stages, the smooth linear stage, the linear deceleration stage, the like smooth lines stage and the attenuation damage stage from the loading beginning to the ultimate strength for concrete samples of the same age and different configuring strength. Ultrasound amplitude of concrete samples get smaller with the increase of the stress; when the concrete samples damage, the smallest sound velocity is derived. According to measured ultrasound amplitude under different stress and different configuring strength of the concrete, fitting function is used by Boltzmann, and the correlation coefficient was calculated to obtain concrete development model under different loading conditions and different ages.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ling Zhang
AU  - Lili Gao
AU  - Chunling Yan
PY  - 2015/08
DA  - 2015/08
TI  - Study on Characteristics of Ultrasound Amplitude for the Concrete under Stress
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 1663
EP  - 1667
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.321
DO  - 10.2991/ic3me-15.2015.321
ID  - Zhang2015/08
ER  -