Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Civil and Environmental Engineering | en_US |
| dc.contributor.advisor | Wang, Yuhong (CEE) | en_US |
| dc.creator | Sheng, Wei | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/13638 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Functions and durability of manufactured concrete pavement textures | en_US |
| dcterms.abstract | Concrete pavement texture significantly influences the functional performance of roads, such as pavement mechanical durability, skid resistance, abrasion resistance, and tire-pavement noise. Although extensive research has focused on the influence of texture characteristics on these functional performances, the relationships between the specific texture features (e.g., texture cavity shape, width, depth, and spacing) and pavement functional performance remain poorly understood. This is attributable to the random and irregular textures produced by conventional texturing techniques, such as burlap dragging, brooming, and timing. However, with advancements in manufacturing techniques (for example, 3D printing and modular integrated construction (MiC)), customizable and high-performance concrete textures for road pavements can now be generated. Therefore, this research aimed to systematically investigate the relationships between texture features and pavement functional performance through experiments, modeling, and theoretical analyses. | en_US |
| dcterms.abstract | First, to assess the mechanical durability of pavement texture, the finite element method (FEM) was used to investigate the detailed stress distributions, including tire-pavement contact stresses, maximum and minimum principal stresses (Smax and Smin, respectively). An innovative experiment was developed to validate the effectiveness of the finite element model, simulating the interaction between the tire and pavement textures. A linear model was proposed to evaluate the effects of texture features on the mechanical strength and frictional force. Second, to evaluate the fatigue performance of pavement textures under repetitive traffic loadings, a new experiment was conducted using the DTS-30 Servo-hydraulic Dynamic Testing System. Third, an abrasion resistance test was conducted using a wheel accelerated loading polishing machine to assess the wear resistance of the pavement texture. To measure the low-speed and high-speed skid resistance of the texture before and after the abrasion resistance test, various devices were used, including the British pendulum tester (BPT), T2GO friction tester (T2GO), and high-speed friction tester (HSFT). Additionally, changes in surface topography before and after the abrasion resistance test were evaluated using scanning electron microscopy (SEM), optical coordinate measuring machine (OCMM), and laser texture scanner (LST). These evaluations, including texture fidelity analysis, power spectrum density (PSD), and mean profile depth (MPD), helped establish the relationships between surface topography and low-speed and high-speed skid resistance, as well as the relationships between surface topography and abrasion resistance. Lastly, an actual road section was constructed with the specified concrete pavement textures. The Onboard Sound Intensity (OBSI) test was conducted on this section to measure the sound intensity levels (SIL) of tire-pavement noise. The measured data were used to validate the proposed tire-pavement noise analytical model. The validated model was then used to assess the effects of texture characteristics on tire-pavement noise. | en_US |
| dcterms.abstract | The key findings of this research can be summarized as follows: (1) Among the texture features, the shape and spacing of texture cavities considerably affect the pavement's mechanical durability, while texture width has a moderate effect and texture depth has minimal impact. Specifically, the texture cavity shape significantly affects Smax and Smin, texture spacing affects the stress concentration effect, and texture width has a moderate effect on the stress concentration effect. (2) The impact of micro-texture on the pavement skid resistance is more significant than that of macro-texture. Micro-wavelengths between 62.8 μm and 500 μm notably affect low-speed friction, while those between 62.8 μm and 125.6 μm play a crucial role in high-speed friction. Traffic loadings primarily wear micro-textures with micro-wavelengths ranging from 62.8 to 500 μm, with little effect on micro-textures with wavelengths less than 62.8 μm and macro-textures. (3) The tire-pavement noise can be significantly reduced by optimizing surface textures using advanced manufactured techniques, achieving a noise reduction of approximately 5-15 dB(A) compared with concrete pavements manufactured using traditional texturing techniques. Among the texture features, the cavity shape and depth more notably affect the noise than the width and spacing. | en_US |
| dcterms.abstract | The findings presented in this thesis are expected to enhance our understanding of the intricate connections between texture features and the functional performance of pavements. The insights will help engineers design and manufacture custom-made pavement textures tailored to specific scenarios. Moreover, the novel experiments, theories, and models developed are expected to serve as valuable tools for researchers and practitioners to explore aspects of pavement performance beyond the scope of this research. | en_US |
| dcterms.extent | xxii, 252 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2025 | en_US |
| dcterms.educationalLevel | Ph.D. | en_US |
| dcterms.educationalLevel | All Doctorate | en_US |
| dcterms.accessRights | open access | en_US |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/13638