Study on paving compactness detection based on frequency domain characteristics of screed device vibration signal

被引：0

作者：

Luo, Qingyun ^{[1
]}

Liu, Honghai ^{[1
]}

Xu, Zhongxin ^{[1
]}

Wu, Ping ^{[2
]}

机构：

[1] Changan Univ, Sch Construct Machinery, Xian 710061, Peoples R China

[2] Inner Mongolia Rd & Bridge Grp Co Ltd, Hohhot 010051, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 432卷

关键词：

Pavement construction; Screed device; Dynamic model; Paving compactness detection; Frequency domain characteristic;

D O I：

10.1016/j.conbuildmat.2024.136652

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Uniform paving compactness reduces the variability of pavement compactness, which improves the pavement durability and service performance. Thus, it is necessary to detect the paving compactness and monitor the construction quality. The dynamical model is established to analyze the influence of hot mix asphalt stiffness on the screed device vibration signal. Based on frequency domain characteristics of screed device vibration signal, Paving Compactness Measurement Value ( PCMV ) is proposed. The PCMV consists of two parts: PCMV1c 1 c and PCMV2c. 2 c . PCMV1c 1 c is the ratio of tamper fundamental component to vibrator fundamental component. PCMV2c 2 c is the ratio of tamper first harmonic component to vibrator fundamental component. The relations between PCMV1c, 1 c , PCMV2c, 2 c , PCMV and paving compactness are studied by field test. Research results show that the spectrum of screed device vibration signal contains vibrator frequency, tamper frequency and its harmonic component. Mean value of linear correlation coefficient R2 2 between PCMV and the paving compactness is 11.58% higher than that of PCMV1c 1 c and 6.76% higher than that of PCMV2c. 2 c . Taking PCMV as indicator, the paving compactness is detected more accurately. Research results can provide a reference for online detection of the paving compactness.

引用

页数：13