This paper describes a high-toughness, ultra-thin friction course developed to improve the pavement quality and extend the service life of the channel (originally a temporary bridge) for the artificial island in the Hong Kong-Zhuhai-Macao Bridge. The effects of extra loads and the extended operating period on the bridge were investigated experimentally for various binding materials, gradation designs, repair plans for the bridge deck, various bonding interface treatment, and construction quality management techniques. The results show that the high-toughness, ultra-thin friction course coupled with synchronous paving provides thinner pavement thicknesses, much higher mechanical strength, less compaction requirement, and higher construction efficiency. The texture depth (increased by 0.34 mm), friction coefficient (increased by 15.5 BPN), noise (reduced by 3~6 dB), and flatness (improved from 6.5 mm to 1.4 mm) were significantly better than for the original cement concrete bridge pavement. The water sealing ability (< 30 mL/min) and the debonding strength (> 0.7 MPa) reached a good condition. This paving system can also be applied upgrade highway, urban road, bridge, and tunnel surfaces.
YU Jiangmiao
,
CHEN Fuda
,
PENG Xinyan
,
LIU Guohua
,
DENG Ke
,
YU Xianshu
,
ZHANG Wenfeng
,
MO Guangliang
,
LU Xue
,
CHEN Zhenwen
,
XU Tianrao
,
LI Junhua
. High-toughness, ultra-thin friction course for the channel on the Zhuhai artificial island of the Hong Kong-Zhuhai-Macao Bridge[J]. Journal of Tsinghua University(Science and Technology), 2020
, 60(1)
: 48
-56
.
DOI: 10.16511/j.cnki.qhdxxb.2019.26.040
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