Open AccessExperimental study on detection of void in concrete pavement slab by FWD
Author(s) -
Yintan Wu,
Tao Liu,
Huang Zhi,
Binbin Chen,
Zhaohui Zheng,
Hongyuan Fang,
Ke Yang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/508/1/012080
Subject(s) - slab , void (composites) , deflection (physics) , the void , geotechnical engineering , structural engineering , void ratio , geology , engineering , materials science , composite material , physics , optics , quantum mechanics
In grouting process, first of all, detection technology should be used to detect the engineering disease area, so as to determine the location of the disease more accurately, which is not only conducive to achieving the desired reinforcement effect, but also can save unnecessary economic expenses. In this paper, the normal pavement slab and the pavement slab with different void states are constructed by self-made test device. Then the deflection values of the normal pavement slab and the pavement slab with different void states are tested by deflectometer FWD. Based on the test, the deflection laws of the normal pavement slab and the pavement slab with different void states are compared and analyzed. The test results show that FWD can accurately identify the condition of pavement void; the deflection of the void position and the area near the void position is obviously larger than that of the normal panel, and the deflection of the void position is proportional to the area of the void area.