Mechanical behavior and failure mechanism of recycled semi-flexible pavement material

Ding, Qingjun; Zhao, Mingyu; Fan, Saijun; Zhang, Xiaoqiang

doi:10.1007/s11595-015-1261-z

Cited by 37 publications

(15 citation statements)

References 15 publications

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“…Therefore, these methods need further investigation and selection to uncover properties of GSP concisely. Further, Ding et al, investigated recycled Semi-flexible Pavement material by splitting test at 20 • C, which indicated its anti-cracking resistance was positively linked with viscoelasticity of the binder [109].…”

Section: Low-temperature Performancementioning

confidence: 99%

“…Similarly, in another test, Ding et al, considered different factors from Ling: the intermittent time coefficient was 7; the crack propagation coefficient was 20; the Days number of the unfavorable season was 60; and the transverse distribution coefficient was 0.5. The result was expressed as follows [109]: [117,118]. Due to an additional factor of 1.1 for the lateral load distribution, 45 was finally determined as the correction factor [117,118].…”

Section: Fatigue Correction Factormentioning

confidence: 99%

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Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

Guo

Hao

2021

Applied Sciences

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Grouted Semi-flexible Pavement (GSP) is a novel pavement composed of open-graded asphalt concrete grouted with high-fluidity cement mortar. Due to its excellent load-bearing and anti-rutting performance, it has great potential as anti-rutting overlay and surface in road construction. However, the understanding of GSP performance remains limited and pertinent findings are inconsistent. This article aims to provide a systematic literature review for the articles which were published between 2000 and 2020 on GSP, explore the problems in the recent research, identify knowledge gaps, and deliver recommendations for future research. The influential factors and the relative evaluation methods of GSP performance are summarized and discussed in this article.

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Section: Low-temperature Performancementioning

confidence: 99%

Section: Fatigue Correction Factormentioning

confidence: 99%

Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

Guo

Hao

2021

Applied Sciences

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“…In order to improve the material and structure for crack resistance, it is necessary to judge the weak position of the SFP mixture and the crack control stress. In order to find the weak parts, Ding built a SFP finite element model through digital image processing technology, characterized the distribution of materials through three-phase material structure, inferred the weak points of materials in cracks through tensile strain, and considered that the probability of cracks appearing at the interface between asphalt and grouting materials was greater [12]. A. Setyawan believes that the strength of SFP mainly depends on the strength of cement binder, and the compressive strength of cold mix grouting composite is lower than that of hot mix grouting material [13].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Resistance and Cracking Mechanism of Semi-Flexible Pavement Mixture

et al. 2021

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Semi-flexible pavement (SFP) is widely used in recent years because of its good rutting resistance, but it is easy to crack under traffic loads. A large number of studies are aimed at improving its crack resistance. However, the understanding of its fatigue resistance and fatigue-cracking mechanism is limited. Therefore, the semi-circular bending (SCB) fatigue test is used to evaluate the fatigue resistance of the SFP mixture. SCB fatigue tests under different temperature values and stress ratio were used to characterize the fatigue life of the SFP mixture, and its laboratory fatigue prediction model was established. The distribution of various phases of the SFP mixture in the fracture surface was analyzed by digital image processing technology, and its fatigue cracking mechanism was analyzed. The results show that the SFP mixture has better fatigue resistance under low temperature and low stress ratio, while its fatigue resistance under other environmental and load conditions is worse than that of asphalt mixture. The main reason for the poor fatigue resistance of the SFP mixture is the poor deformation capacity and low strength of grouting materials. Furthermore, the performance difference between grouting material and the asphalt binder is large, which leads to the difference of fatigue cracking mechanism of the SFP mixture under different conditions. Under the fatigue load, the weak position of the SFP mixture at a low temperature is asphalt binder and its interface with other materials, while at medium and high temperatures, the weak position of the SFP mixture is inside the grouting material. The research provides a basis for the calculation of the service life of the SFP structure, provides a reference for the improvement direction of the SFP mixture composition and internal structure.

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“…e failure possibility order of each phase in recycled semiflexible pavement material was asphalt binder, reclaimed aggregate, cement paste, and virgin aggregate [16]. Yang and Weng revealed that the void content of porous asphalt mixture is the most important factor influencing the durability of SFP subjected to cyclic wheel load [17].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Influences of Curing Time on the Cracking Resistance of Semiflexible Pavement Mixture

Tan¹,

Xiong

Gong

et al. 2021

Advances in Materials Science and Engineering

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Semiflexible pavement (SFP) is constructed by pouring grouting material into porous asphalt (PA) mixture. SFP has been widely used to address the rutting distress issues across China in recent years. However, studies on its cracking resistance are limited and the failure mechanism of the SFP mixture has not been fully explored nor understood in a comprehensive way. Moreover, the influences of the curing time on the cracking property of the SFP mixture are still not clear. To this end, the strength development and shrinkage properties of grouting materials are determined by utilizing the three-point beam bending test and the shrinkage test. The semicircular bending (SCB) test and the scanning electron microscope-energy-dispersive spectrum (SEM-EDS) are conducted in this study to investigate the cracking resistance and failure mechanism of SFP mixtures with different curing days. Results show that both the strength and shrinkage of grouting materials would develop as the curing time was extended from 0 days to 14 days. SCB test results show that SFP mixtures have higher tensile strength but a lower flexibility index (FI) than PA mixture. It is found that the cracking resistance of SFP mixture is influenced by both the grouting materials’ strength and shrinkage. SEM-EDS analysis demonstrates that the cement-asphalt interface is a stress concentration site and therefore is the weak zone where cracks would initially develop. The microcracks found in the interface zone with different curing days may contribute to the decline of the SFP mixture’s anticracking ability. This study sheds light on the further application of SFP in practical projects.

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Mechanical behavior and failure mechanism of recycled semi-flexible pavement material

Cited by 37 publications

References 15 publications

Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

Fatigue Resistance and Cracking Mechanism of Semi-Flexible Pavement Mixture

Investigation on the Influences of Curing Time on the Cracking Resistance of Semiflexible Pavement Mixture

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