A structural design for semi-rigid base asphalt pavement based on modulus optimization

Lv, Songtao; Yuan, Jiang; Peng, Xinghai; Zhang, Naitian; Liu, Hongfu; Luo, Xinzi

doi:10.1016/j.conbuildmat.2021.124216

Cited by 14 publications

(3 citation statements)

References 23 publications

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“…Fortunately, the functional problems of subgrade in cold regions could be effectively solved by using a large void semi-rigid permeable base and the large void semi-rigid permeable base was a semi-rigid material using micro-fine aggregates or using open or crushed gradation or reduced cement dosage (Lv et al ., 2021; Zang et al ., 2018; Titi and Matar, 2018). Aggregates were formed by relying on aggregate embedding and contact point bonding to form a “point-to-point” skeletal void structure, leaving a considerable void space between aggregate particles.…”

Section: Introductionmentioning

confidence: 99%

Study on the design and laboratory investigation of permeable semi-rigid base material with large air voids

Li,

Xiao,

Zhao

et al. 2024

IJSI

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PurposeTo explore the economical and reasonable semi-rigid permeable base layer ratio, solve the problems caused by rainwater washing over the pavement base layer on the slope, improve its drainage function, improve the water stability and service life of the roadbed pavement and promote the application of semi-rigid permeable base layer materials in the construction of asphalt pavement in cold regions.Design/methodology/approachIn this study, three semi-rigid base course materials were designed, the mechanical strength and drainage properties were tested and the effect and correlation of air voids on their performance indexes were analyzed.FindingsIt was found that increasing the cement content increased the strength but reduced the air voids and water permeability coefficient. The permeability performance of the sandless material was superior to the dense; the performance of the two sandless materials was basically the same when the cement content was 7%. Overall, the skeleton void (sand-containing) type gradation between the sandless and dense types is more suitable as permeable semi-rigid base material; its gradation is relatively continuous, with cement content? 4.5%, strength? 1.5 MPa, water permeability coefficient? 0.8 cm/s and voids of 18–20%.Originality/valueThe study of permeable semi-rigid base material with large air voids could help to solve the problems of water damage and freeze-thaw damage of the base layer of asphalt pavements in cold regions and ensure the comfort and durability of asphalt pavements while having good economic and social benefits.

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Section: Introductionmentioning

confidence: 99%

Study on the design and laboratory investigation of permeable semi-rigid base material with large air voids

Li,

Xiao,

Zhao

et al. 2024

IJSI

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“…Semi-rigid base pavement structures, comprising asphalt surfaces and cement-stabilized macadam bases, are prevalent in China [1][2][3][4][5][6]. These structures often face challenges related to interlayer bonding due to factors like construction techniques and environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional orthorectified simulation and ground penetrating radar detection of interlayer bonding condition in asphalt pavements

Yang,

Yao

et al. 2024

Meas. Sci. Technol.

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To evaluate the applicability of three-dimensional ground-penetrating radar (GPR) in assessing interlayer bonding within asphalt pavements featuring semi-rigid base layers, we conducted an analysis of the GPR detection mechanism. Employing forward simulation, various medium models were created to analyze electromagnetic wave transmission in air, water, and sand. GPR testing was applied to four distinct pavement structures, utilizing amplitude intensity levels and image processing techniques to assess asphalt pavement interlayer bonding. The results were validated by comparing them with core samples. The findings revealed a significant influence of medium uniformity on electromagnetic wave transmission processes. Non-uniform media models generate a large number of clutter waves, which refers to amplitudes and phases that have no predictable regularity in time and space i.e., they show irregular ups and downs and fluctuations. It is similar to the clutter that occurs during actual detection. Poorly bonded areas exhibited clearer hyperbolic ripples, primarily attributed to significant differences in the dielectric constants of filling materials. Amplitude strength effectively evaluated bonding across different asphalt pavement configurations and lanes, typically following a normal distribution. Enhanced interlayer contact correlated with smaller amplitudes, while weaker bonding led to larger amplitudes. The amplitude distribution in the center of lanes differed significantly from wheel track areas, indicating better interlayer bonding conditions in the center lanes compared to the wheel track belt. Moreover, radar plan views demonstrated considerable variation across different interlayer contact conditions. The image processing method proved effective in evaluating the interlayer contact condition of various pavement structures across full cross-sections.

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“…Shon et al [13] presented a pavement management framework that involves multiscale decisions, including system-level budget allocations, group-level inspections and facility-level maintenance, rehabilitation and reconstruction strategies. Considerable data analyses [14][15][16] reveal many cases of being focused on choosing typical pavement structures, but there are very few studies that take into account both work performance and economic performance and involve quantitative analysis.…”

Section: Introductionmentioning

confidence: 99%

Decision-Making for Typical Pavement Structure Based on Life-Cycle Economic Evaluation and Key Performance Indicators

et al. 2022

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The economy and rationality of the typical structural scheme for asphalt pavement are directly related to the formation of its service target. Based on the original highway asphalt pavement structure in Jilin Province, the evaluation index system was established by the research of the literature, investigation and Delphi method, and the results of expert consultation were tested by indicators such as enthusiasm, authority and coordination. The Kendall coordination coefficient was 0.803, indicating a strong degree of evaluation consistency. Then, using the finite element method and pavement economic analysis method, the key parameters of pavement structure asphalt, pavement design performance and economy are calculated. Finally, the key indicators in the pavement design process are quantified by using analytic hierarchy process (AHP) and gray relational theory, the weight of each key indicator and the correlation degree of the pavement structure are calculated, and pavement structure 1 is determined to be the best solution. The results show that a decision model for typical structural types of asphalt pavement can be established by using an improved gray relational analytic hierarchy process. In this study, the decision-making model can quickly and conveniently determine the most suitable typical pavement structure, the selected structures are checked, and the calculation results meet the requirements of the specification. However, given the limited reference cases, the proposed pavement structure decision-making method needs to be verified and improved through more practical applications.

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A structural design for semi-rigid base asphalt pavement based on modulus optimization

Cited by 14 publications

References 23 publications

Study on the design and laboratory investigation of permeable semi-rigid base material with large air voids

Study on the design and laboratory investigation of permeable semi-rigid base material with large air voids

Three-dimensional orthorectified simulation and ground penetrating radar detection of interlayer bonding condition in asphalt pavements

Decision-Making for Typical Pavement Structure Based on Life-Cycle Economic Evaluation and Key Performance Indicators

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