Journal of Road Engineering最新文献

{"title":"Effect of raw materials and proportion on mechanical properties of magnesium phosphate cement","authors":"Yangzezhi Zheng ,&nbsp;Yang Zhou ,&nbsp;Xiaoming Huang ,&nbsp;Haoyuan Luo","doi":"10.1016/j.jreng.2022.06.001","DOIUrl":"10.1016/j.jreng.2022.06.001","url":null,"abstract":"<div><p>Magnesium phosphate cement (MPC) cementitious material is a phosphate cement-based material with strength formed by a serious of acid-base neutralization reactions among magnesium oxide, phosphate retarder and water, which has a high early strength and a broad application prospect in the field of pavement rehabilitation. This review collects and organizes the latest progress in the field of research on the influencing factors of mechanical properties of magnesium phosphate cementitious materials worldwide in recent years, and discusses the possibilities of application in airport engineering.</p><p>The type of phosphate has a great influence on the reaction products, and the strength of the reaction products of ammonium salt is higher. Borax is the most commonly used retarder, and the retarding effect is related to the ratio of boron to magnesium. However, borax retarders have an adverse effect on the strength of MPC. In terms of the influence of mineral admixtures on the properties of MPC, fly ash, silica fume and metakaolin, as common mineral admixtures, have a positive influence on the mechanical properties of MPC, but the mechanism and degree of the influence of the three materials on the strength of MPC are slightly different; Aggregates can also improve the volume stability and mechanical properties of MPC by forming skeleton structure and slowing down the exothermic reaction. In fiber reinforced MPC matrix, steel fiber is the most widely used and the bonding performance between special-shaped steel fiber and MPC matrix is higher than that of straight fiber; basalt fiber has also been proved to be used to improve the mechanical properties of MPC system.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 3","pages":"Pages 243-251"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000427/pdfft?md5=54353f02b8ded2febae593793464881b&pid=1-s2.0-S2097049822000427-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81616159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of ultraviolet ageing mechanisms and anti-ageing methods for asphalt binders","authors":"Yuanyuan Li ,&nbsp;Jianlin Feng ,&nbsp;Shaopeng Wu ,&nbsp;Anqi Chen ,&nbsp;Dongliang Kuang ,&nbsp;Tao Bai ,&nbsp;Yangming Gao ,&nbsp;Jizhe Zhang ,&nbsp;Linglin Li ,&nbsp;Liyao Wan ,&nbsp;Quantao Liu ,&nbsp;Zongwu Chen ,&nbsp;Dengjun Gu","doi":"10.1016/j.jreng.2022.04.002","DOIUrl":"10.1016/j.jreng.2022.04.002","url":null,"abstract":"<div><p>Asphalt binder is inevitably aged by ultraviolet (UV) light during its service period. UV ageing can significantly decrease the technical properties of asphalt binder. The sensitivity of asphalt to UV ageing and thermal-oxidative ageing differs, such that the UV ageing performance cannot be determined based on the thermal-oxidative ageing performance. Previous researches mainly focused on the chemical composite and technical performance changes of asphalt binder during UV ageing, and the UV light parameters effect on the ageing rate of asphalt binder. However, the theory for characterizing and explaining the development of UV ageing depth does not get too much attentions, and the UV ageing mechanism of asphalt binder is not very clear. Therefore, it cannot guide to develop or select the good methods or anti-UV ageing additives for asphalt binders. This paper focuses on the latest researches of the mechanisms and anti-ageing methods of asphalt binders. With the increase of UV ageing time, the UV ageing of asphalt binder develops gradually from the surface to inner part. There are various methods, such as low-penetration grade asphalt, less air void ratio, UV stabilizers and UV light absorbers, that can improve the UV ageing resistance of asphalt binders. A new theory of sensitive wavelengths of asphalt UV ageing is proposed, which can enrich the basic theory of asphalt UV ageing. Depending on this theory, different wavelengths of UV light have different ageing effects on asphalt binder. The composite anti-UV ageing additives with barrier and specific absorption effects on UV light is proposed, and may have better improvement effect on the anti-UV ageing performance of asphalt binder.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 2","pages":"Pages 137-155"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000178/pdfft?md5=e6baaa0ae09a97767ef6b99919a13fea&pid=1-s2.0-S2097049822000178-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76445886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pavement structure and materials design for sea-crossing bridges and tunnel: Case study of the Hong Kong–Zhuhai–Macau Bridge","authors":"Aimin Sha ,&nbsp;Wei Jiang ,&nbsp;Jinhuan Shan ,&nbsp;Wangjie Wu ,&nbsp;Yupeng Li ,&nbsp;Shuangjiao Zhang","doi":"10.1016/j.jreng.2022.05.002","DOIUrl":"https://doi.org/10.1016/j.jreng.2022.05.002","url":null,"abstract":"<div><p>With the continuous development of bridge and tunnel construction technologies, large-scale sea-crossing bridges and tunnels have gradually become the preferred choice for regional traffic. The construction technology of Hong Kong-Zhuhai-Macau Bridge (HZMB), one of the most representative sea-crossing passageways, is instructive for the construction of other large sea-crossing infrastructures. At present, the pavement design method of sea-crossing passageways lacks pertinence as it still refers to specifications for design of common pavement. Therefore, it is necessary to consider the bridge and tunnel pavement of HZMB as a typical example to analyze key technical problems encountered in its design, construction and operation. Novel solutions for material selection and structural design built upon the analysis of such critical problems should thus follow up. Based on comprehensive literature research, it can be found that environmental variability, tunnel closure, structural differential settlement and expansion deformation are the key technical problems faced by pavement of sea-crossing passageways. In view of the environmental variability, the steel deck-paving material and structure design of GMA-10 + SMA-13 is innovatively proposed. As for the closure of immersed tube tunnel, warm-mix flame retardant asphalt mixture is used to control pavement design through key indexes such as temperature and limit oxygen index. Regarding the deformation of immersed pipe joints, BJ200 asphalt seamless expansion joint material is introduced, which effectively satisfies the multi-directional deformation between pipe joints and ensures the smoothness of the road surface and driving comfort. For segmental joints, double-layer waterproof-coiled material is used to effectively prevent reflective cracks while ensuring the continuity of asphalt concrete pavement. Therefore, this paper provides a panel of ideas and methods for the pavement design of the same type of sea-crossing passageways.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 2","pages":"Pages 99-113"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000191/pdfft?md5=e61830cf59fa1aa3fa4ae4a456e1a4ca&pid=1-s2.0-S2097049822000191-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92021189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A state-of-the-art review of asphalt pavement surface texture and its measurement techniques","authors":"Siyu Chen ,&nbsp;Xiyin Liu ,&nbsp;Haoyuan Luo ,&nbsp;Jiangmiao Yu ,&nbsp;Fuda Chen ,&nbsp;Yang Zhang ,&nbsp;Tao Ma ,&nbsp;Xiaoming Huang","doi":"10.1016/j.jreng.2022.05.003","DOIUrl":"10.1016/j.jreng.2022.05.003","url":null,"abstract":"<div><p>To understand the research status of asphalt pavement texture, the related achievements and progress of pavement surface texture were systematically sorted out from three aspects: the characterization of pavement surface texture, the texture measurement and evaluation, and the relationship between texture and the skid resistance. Based on the statistical geometric characteristics, the spectral characteristics, the fractal characteristics and the multifractal characteristics, the characteristics of pavement texture were discussed. The test methods of pavement texture were divided into two categories: direct measurement methods and indirect measurement methods. The advantages and disadvantages of each measurement method were summarized. The effects of macro-texture and micro-texture on asphalt pavement were discussed, respectively. The relationship between texture and skid resistance was studied. This review shows that multifractal theory should be further studied from the aspect of road engineering. High-precision non-contact integrated detection technology should be further studied to meet the needs of complex testing environments. The method of finite element numerical simulation has potential for the analysis of pavement skid resistance. In addition, methods such as big data analysis, neural network, and deep learning should be studied to achieve the intelligent perception and management of the whole state of skid resistance prediction.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 2","pages":"Pages 156-180"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000208/pdfft?md5=0ee48b2750fb75b7a33fd98b001441ac&pid=1-s2.0-S2097049822000208-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91234329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of dual and new generation wide-base tire assembly on inverted pavements","authors":"Rajan Singh Baghel ,&nbsp;Sridhar Reddy Kasu ,&nbsp;Anush K. Chandrappa","doi":"10.1016/j.jreng.2022.04.001","DOIUrl":"10.1016/j.jreng.2022.04.001","url":null,"abstract":"<div><p>The conventional flexible pavements have been constructed such that the stiffness of the layer reduces with depth. The crust thickness becomes significantly high for heavy traffic corridors resulting in the consumption of large quantities of construction materials and also increasing environmental pollution. Inverted pavements with the aggregate interlayer (AIL) or stress absorbing membrane interlayer (SAMI) are considered to be one of the alternatives for thick conventional flexible pavements for heavy traffic corridors. The AIL or SAMI is placed between a stiff cement-treated base and asphalt concrete layer to function as crack relief layers. This change in the composition alters the behaviour of inverted pavements compared to the conventional flexible pavements. On the other hand, wide-base tires are being increasingly preferred by trucking industries due to increased fuel economy and cargo capacity. However, the effect of wide-base tires on the performance of inverted pavements is yet to be investigated. In this study, the 3D finite element (FE) models of inverted pavements considering different crack relief layers were developed, and load from dual-wheel and wide-base tires were applied. The stress-strain evolution in the various layers of inverted pavements was investigated and discussed in this study. The results indicated the higher stress and strains due to wide base tires compared to the dual-wheel assembly. Further, pavement with SAMI was found to result in lower stress and strains in the asphalt concrete layer compared to AIL pavements.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 2","pages":"Pages 124-136"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000166/pdfft?md5=a7b86227e3edef0fde803e2f0804ec8e&pid=1-s2.0-S2097049822000166-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80310897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a validation technique for road surface profile applicable to point cloud data","authors":"Kazuya Tomiyama ,&nbsp;Yuki Yamaguchi ,&nbsp;Kazushi Moriishi ,&nbsp;Yuki Kotani","doi":"10.1016/j.jreng.2022.05.001","DOIUrl":"10.1016/j.jreng.2022.05.001","url":null,"abstract":"<div><p>In recent years, various information and communication technology (ICT) devices measuring three-dimensional (3D) point cloud data have been developed and widely used for the application of pavement surface investigation. However, ICT devices have generally been developed not only for measuring road surface profiles but for various geo-reference point clouds. In this background, the validation of surface profiles acquired with ICT devices fulfils an important role in proving the reliability of measurement result composed by point clouds. This study proposes a wavelet transform agreement (WTA) which involves a normalization factor of profile amplitude for further improvement in the wavelet-based coherence technique. The WTA analysis allows evaluating similarity/dissimilarity of two profiles considering both the location and wavelength simultaneously. For this purpose, a terrestrial laser scanner (TLS), a mobile mapping system (MMS), and an unmanned aerial vehicle (UAV) are employed to prove the advantage of WTA in practical applications. As a result, the advantages of WTA analysis are clearly recognized in the optimization for the measurement interval of TLS, the multi-line measurement of MMS for ride quality improvement of a pavement, and the efficient operation of UAV in terms of the flight altitude. This paper also shows the identification of aging development for surface roughness over time in terms of locations and wavelengths. These findings help not only to guarantee the accuracy of profile measurements but to realize the sophisticated way of using 3D point clouds acquired with ICT devices. The outcomes of this study contribute to the increase of productivity for pavement works with improving the quality of surface profile measurement.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 2","pages":"Pages 114-123"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S209704982200018X/pdfft?md5=15c0cb5f319abcdf2c8be8080dc847cd&pid=1-s2.0-S209704982200018X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89892386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental assessments of methanol-based foaming agent in latex modified foamed binders and warm asphalt mixtures","authors":"Mohd Rosli Mohd Hasan ,&nbsp;Tai Guo ,&nbsp;Hainian Wang ,&nbsp;Zul Fahmi Mohamed Jaafar ,&nbsp;Zhanping You","doi":"10.1016/j.jreng.2022.03.002","DOIUrl":"10.1016/j.jreng.2022.03.002","url":null,"abstract":"<div><p>Latex is one of the natural rubbers that is used to enhance the performance of asphalt pavement for the last few decades. The presence of latex, which is categorized as an elastomer, helps to improve pavement performance and durability. Conversely, higher viscosity of latex modified asphalt binder increases the production-temperatures of asphalt mixture, thus consuming higher energy during asphalt mixture’s production stage. In this study, the effectiveness of methanol as an energy-efficient foaming agent was assessed to reduce the viscosity and enhance the workability of the modified asphalt binder. The basic and rheological properties of the asphalt binders were determined through multiple laboratory tests including expansion ratio and half-life, rotational viscosity, softening point, torsional recovery, and dynamic shear rheometer. The properties of asphalt mixtures were assessed through the service characteristics, mechanical performance, and moisture resistance criteria. It was found that the presence of latex results in an approximately twofold higher expansion ratio and a lower half-life of the asphalt binder at about the same ratio. Through the rotational viscosity test, the application of methanol into asphalt binder decreased the viscosity and led to better workability, despite the addition of latex as an asphalt modifier. The application of methanol into asphalt binder improved the workability of mixture samples and lowered the compaction energy of the compaction process, which are the crucial criteria for a better mixing and compaction process. Methanol foamed asphalt mixtures with latex show much higher resistance to moisture damage and stiffness than control sample even though they were prepared at a lower temperature.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 1","pages":"Pages 84-97"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S209704982200004X/pdfft?md5=5d62dea61ba7cdf448e0d7e9cdc69950&pid=1-s2.0-S209704982200004X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91145141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“Noisy” issues in road acoustics: A white paper","authors":"Filippo Giammaria Praticò","doi":"10.1016/j.jreng.2022.03.001","DOIUrl":"10.1016/j.jreng.2022.03.001","url":null,"abstract":"<div><p>Despite almost a century of studies dealing with traffic noise, researchers and practitioners still face old and new issues when designing a low-noise pavement. Given that, this manuscript aims at focusing on a number of unsolved questions, namely theoretical or technological. 1) Is it viable to balance diverse road-related needs (i.e., noise, expected life, texture levels, and friction)? 2) How much does the pavement material affect its acoustic performance (the remaining factors being constant)? 3) How much reliable is the relationship between road texture and mixture aggregate gradation? Based on the analysis of these issues, it emerges that: 1) optimal pavement design involves complex mix optimization and there are theoretical and practical bases to set up a balanced approach to address the complexity of pavement design; 2) high percentages of crumb rubber could optimise road acoustic response but this latter has a relationship with the tyre/road noise (expressed, for example, in terms of close proximity index) that calls for further investigation; 3) aggregate gradation appears to be a reliable basis to predict surface texture and therefore, under given boundary conditions, tyre/road noise; and 4) further studies and investigations are needed in terms of local calibration of deterioration curves and setting up of a sound method to assess the frequency response of asphalt concretes and to govern on-site noise indicators based on mixture properties.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 1","pages":"Pages 61-69"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000014/pdfft?md5=871044f3df70ad9ea024b5c0d83182fb&pid=1-s2.0-S2097049822000014-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80442225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review on constitutive models of road materials","authors":"Qian Li,&nbsp;Xudong Wang,&nbsp;Xu Liu,&nbsp;Xingye Zhou","doi":"10.1016/j.jreng.2022.02.001","DOIUrl":"10.1016/j.jreng.2022.02.001","url":null,"abstract":"<div><p>Road material constitutive model is the essential condition of pavement structure design, calculation, and maintenance decision. Experts have conducted in-depth studies on the problems and proposed many meaningful constitutive models. However, these constitutive models have not been summarized and no uniform conclusion on the applicability of them is reported in the academic circle. The linear elastic model based on Hooke's law is still used in pavement structure design. This paper systematically reviewed the existing constitutive models that reflect the materials' mechanical properties and used for pavement structure calculation. These constitutive models were divided into three categories: linear, nonlinear, and damage models under repeated loads. The applicable conditions, parameter determination methods, advantages, and disadvantages of each model were introduced. Moreover, the model's feasibility in structural design and calculation was analyzed. Follow-up studies should focus on the parameter determination standard of viscoelastic constitutive models, the extension of the 1D constitutive model to 3D state, and the nonlinear constitutive models related to stress-strain state to drive the application of the constitutive models in pavement structure calculation and design. Furthermore, to evaluate the life cycle service performance of road materials and structures, establishing the pavement damage model from the structure perspective will be the future direction.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 1","pages":"Pages 70-83"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000026/pdfft?md5=2d7a558382b89e265f26ae4a0b1ced93&pid=1-s2.0-S2097049822000026-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91023919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highway constructions on the Qinghai-Tibet Plateau: Challenge, research and practice","authors":"Aimin Sha ,&nbsp;Biao Ma ,&nbsp;Hainian Wang ,&nbsp;Liqun Hu ,&nbsp;Xuesong Mao ,&nbsp;Xilan Zhi ,&nbsp;Huaxin Chen ,&nbsp;Yu Liu ,&nbsp;Feng Ma ,&nbsp;Zhuangzhuang Liu ,&nbsp;Rui He ,&nbsp;Wei Si ,&nbsp;Xuhao Wang ,&nbsp;Cheng Li","doi":"10.1016/j.jreng.2022.02.002","DOIUrl":"10.1016/j.jreng.2022.02.002","url":null,"abstract":"<div><p>Highway constructions on the Qinghai-Tibet Plateau (QTP) face great challenges induced by the unique local environmental, geological, and engineering conditions. The large area of permafrost, great temperature variability, strong UV rays, and complex geological conditions are the major factors that adversely influence the long-term performance of pavement systems. Since 1960s, Chinese engineers and researchers have started conducting research on the QTP to enhance the performance and durability of pavement systems. The present paper provide a comprehensive review of challenge, research and practice of highway constructions on the QTP including the special environmental and geological conditions, history of highway constructions on the QTP, major challenges and the state-of-the-art technology of subgrade constructions on permafrost, developments of the pavement structures and materials, performance prediction and maintenance methods of pavement surfaces, and applications of the research achievements on the first expressway on the QTP (i.e., Gongyu Expressway). Based on the comprehensive literature review, it can be found that (1) frost heave and thaw weakening induced subgrade disease and longitudinal cracks on the pavement surface are complex coupled water-thermal-load problems. Engineering solutions are focusing on active cooling and thermal insulation methods, which can help to reduce temperature variations in the subgrade and thus improving its stability, (2) the harsh environmental and construction conditions may reduce the early strength and induce premature damage of cement-treated base materials. Some field validations showed that geocell-reinforced or asphalt-treated flexible base materials can provide better long-term performance, (3) the large temperature variability and strong UV rays can significantly accelerate aging of asphalt binders and greatly reduce the service life of asphalt mixtures. Various binder modification methods were developed for improving their viscoelasticity and enhance the low-temperature cracking resistance of pavement surface materials but are still lack of field validation data and comparisons of their life cycle costs. Therefore, it is recommended that a demonstration research project build test sections to examine a range of pavement structures and materials, and compare their long-term performance and life cycle costs, which can serve as important reference for future highway constructions on the QTP.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"2 1","pages":"Pages 1-60"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2097049822000051/pdfft?md5=924dbc17ca3e8044d555f996d8acb9fa&pid=1-s2.0-S2097049822000051-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81626122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}