Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis

doi:10.1155/2020/8837128

CORC > 兰州理工大学 > 兰州理工大学

	Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis
	Yang, Xia 3,4; Yang, Wenwei 3,4; Li, Shuntao 2; Wu, Chang 1,4
刊名	ADVANCES IN CIVIL ENGINEERING
	2020-11-27
卷号	2020
ISSN号	1687-8086
DOI	10.1155/2020/8837128
英文摘要	Concrete is a complex building material. Under normal curing conditions, concrete strength shows a nonlinear development process at an early age (1 similar to 28 d). In the first few days after the completion of pouring, the strength of concrete increases slowly. Subsequently, the strength of concrete increases rapidly, reaching about 90% of its age strength. Finally, its strength gradually stabilizes. This paper introduces the experiment of 28-day concrete age strength monitoring based on embedded piezoelectric smart aggregate (SA). Two piezoelectric SAs were embedded in a concrete-filled GFRP (glass fiber reinforced polymer) tube column, one of which emitted a sinusoidal sweep signal and the other SA received the signal. With the hydration reaction of concrete, the stress wave would be significantly different when passing through concrete, and the received signal is changing constantly. Through power spectral density and wavelet packet energy analysis, the monitoring signal of concrete age within 28 days was analyzed. The experimental results show that the wavelet packet energy and power spectral density of the sensor monitoring signal show a nonlinear growth trend with time during the concrete target age. It can be divided into three stages, and the fifth day and the fourteenth day are the demarcation point of energy growth. And the trend of energy change corresponds well with the change of actual concrete strength and age. Comparing and analyzing the received signal energy of the sensor and the power spectral density function of the stress wave signal of the concrete specimen, the trend of the amplitude in the natural frequency domain is found to be the same in the three stages.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000598590300004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155046]
专题	兰州理工大学
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China 2.Hunan Univ, Coll Civil Engn, Changsha 410082, Peoples R China; 3.Ningxia Univ, Sch Civil & Hydraul Engn, Yinchuan 750021, Ningxia, Peoples R China; 4.Ningxia Ctr Res Earthquake Protect & Disaster Mit, Yinchuan 750021, Ningxia, Peoples R China;
推荐引用方式 GB/T 7714	Yang, Xia,Yang, Wenwei,Li, Shuntao,et al. Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis[J]. ADVANCES IN CIVIL ENGINEERING,2020,2020.
APA	Yang, Xia,Yang, Wenwei,Li, Shuntao,&Wu, Chang.(2020).Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis.ADVANCES IN CIVIL ENGINEERING,2020.
MLA	Yang, Xia,et al."Early Age Concrete Strength Monitoring Using Power Spectral Density and Wavelet Packet Analysis".ADVANCES IN CIVIL ENGINEERING 2020(2020).