Journal of Road Engineering最新文献

{"title":"Toughness improvement mechanism and evaluation of cement concrete for road pavement: A review","authors":"Mingjing Fang ,&nbsp;Yiming Chen ,&nbsp;Yungang Deng ,&nbsp;Zhe Wang ,&nbsp;Mengjun Zhu","doi":"10.1016/j.jreng.2023.01.005","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.005","url":null,"abstract":"<div><p>Traditional cement concrete has the disadvantages of low tensile strength, poor toughness, and rapid development of cracks while cracking, which causes a significantly negative influence on the safety and durability of concrete road pavement. This paper presents a state-of-the-art review of toughness improvement mechanisms and evaluation methods of cement concrete for road pavement. The review indicates that (i) The performance of concrete material depends on its material composition and internal structure. Aggregate size, cement properties and admixtures are the main factors of concrete toughness. (ii) The incorporation of rubber or fiber in pavement concrete improves the toughness of concrete materials. However, these additions must be maintained within a reasonable range. The amount of rubber and fiber are encouraged not more than 30% of the volume of fine aggregate and 2% of the volume of concrete, respectively. (iii) The toughness of pavement concrete material includes the toughness regarding bending, impact and fracture. The toughness of cement concrete for highway and municipal pavement is generally evaluated by bending and fracture toughness, while the toughness of airfield pavement concrete is more focused on impact toughness. (iv) The toughening measures of cement concrete for road pavement are mainly mixed with rubber or fiber, while these two materials have their defects, and the application of high-toughness cement concrete in the actual road still faces many challenges. For example, the synergistic effect of rubber and fiber, the development and application of new flexible admixtures, and the formulation of the toughness index of pavement cement concrete materials need further research.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 2","pages":"Pages 125-140"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50200000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of emulsified asphalt modification mechanisms and performance influencing factors","authors":"Yongjun Meng ,&nbsp;Jing Chen ,&nbsp;Weikang Kong ,&nbsp;Yirong Hu","doi":"10.1016/j.jreng.2023.01.006","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.006","url":null,"abstract":"<div><p>In recent years, with the improvement of the requirements of road performance, modified emulsified asphalts with better performance has gradually replaced the emulsified asphalt and become the primary material for road maintenance. This paper introduces the modified emulsified asphalt materials commonly used in pavement maintenance projects, definitions and modified mechanisms of polymerized styrene butadiene rubber (SBR) modified emulsified asphalt, styrene butadiene styrene block polymer (SBS) modified emulsified asphalt and waterborne epoxy resin (WER) modified emulsified asphalt are summarized. The analysis focused on comparing the effects of modifiers, preparation process, auxiliary additives, and other factors on the performance of modified emulsified asphalt. In this paper, it is considered that the greatest impact on the performance of emulsified asphalt is the modifier, emulsifier mainly affects the speed of breaking the emulsion, stabilizers on the basic performance of emulsified asphalt evaporative residue is small; and when the modifier is distributed in the asphalt in a network, the dosage at this time is the recommended optimum dosage. Finally, this study recommends that in the future, the polymer-asphalt compatibility can be improved through composite modification, chemical grafting and other methods to continue to develop broader applicability and better performance of modified emulsified asphalt.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 2","pages":"Pages 141-155"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50200001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An investigation on the strain accumulation of the lightly EICP-cemented sands under cyclic traffic loads","authors":"Emad Maleki Tabrizi,&nbsp;Hamid Reza Tohidvand,&nbsp;Masoud Hajialilue-Bonab,&nbsp;Elham Mousavi,&nbsp;Saba Ghassemi","doi":"10.1016/j.jreng.2023.03.002","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.03.002","url":null,"abstract":"<div><p>Industrial production of chemical cement leads to extreme emissions of greenhouse gases. Biological or bio-inspired sustainable materials for soil treatment projects can be employed instead of chemical cement to heal the carbon cycle in the ecosystem. The enzyme-induced calcite precipitation (EICP) method is one of the novel bio-inspired technologies that can be employed in soil treatment projects to increase desired properties of soils. While the monotonic and cyclic behavior of the enzymatically treated sands has been investigated comprehensively, the strain accumulation pattern in these improved soils under cyclic traffic loads has not been evaluated yet. In this paper, confined and unconfined cyclic compression tests are applied to the enzymatically lightly cemented sands, and the effects of the different parameters on their strain accumulation pattern are investigated for the first time in the literature. This study uses two types of specimens with unconfined compression strengths (UCS) equal to 42 ​kPa and 266 ​kPa. It is shown that the treated specimens have a rate-dependent behavior where cyclic loads with low frequencies lead to more resilient and plastic strains in the specimens. The results show that by approaching the maximum applied stresses to the UCS of the specimens (by breaking more calcite bonds between sand particles), the rate dependency behavior of specimens will reduce. Investigation of the effects of the cementation level demonstrated that by increasing the amount of the precipitated calcite from 0.38% to 0.83%, accumulated plastic strains are reduced almost 95% under the same loading condition. Effects of the initial static loads, confining pressures, the number of cycles, and amplitudes of the cyclic loads are also evaluated.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 2","pages":"Pages 203-217"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50199997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A systematic review of steel bridge deck pavement in China","authors":"Leilei Chen,&nbsp;Xinyuan Zhao,&nbsp;Zhendong Qian,&nbsp;Jiaqi Li","doi":"10.1016/j.jreng.2023.01.003","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.003","url":null,"abstract":"<div><p>As an important part of steel bridge deck, the engineering quality and service condition of steel bridge deck pavement (SBDP) directly affects the capacity and operational efficiency of the bridge. This paper reviews the history of the development of SBDP in China over the past 20 years from the exploration stage, rapid development stage and prosperity stage. The development and application of SBDP at different stages are discussed in terms of materials, structure, design, performance evaluation, maintenance and rehabilitation, respectively. The advantages and disadvantages of different pavement materials and structures, and the application of different research methods are summarized. The review shows that the improvement of pavement materials and structures and the development of new materials should be further studied on the multi-scale to enhance the durability of pavement materials, so as to extend the service life of pavements. The design method of SBDP related to the synergistic effect of vehicle, pavement and bridge should be established, and the design concept and method standard of rigid base pavement structure should be improved and formulate a complete design standard. In addition, multi-disease intelligent identification system and equipment should be studied to track the entire course of disease development in real time. And it is necessary to develop appropriate algorithms to select and classify the complex data of disease and maintenance history.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 1-15"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review on the mesoscale characterization of cement-stabilized macadam materials","authors":"Qiao Dong ,&nbsp;Shiao Yan ,&nbsp;Xueqin Chen ,&nbsp;Shi Dong ,&nbsp;Xiaokang Zhao ,&nbsp;Pawel Polaczyk","doi":"10.1016/j.jreng.2023.01.004","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.004","url":null,"abstract":"<div><p>The base layer constructed by cement-stabilized macadam (CSM) has been widely used in highway construction due to its low elasticity deformation and high carrying capacity. As a bearing layer, the CSM base is not exempt from fatigue cracking under cyclic loading in the service process. Cracks in the base will create irreversible structural and functional deficiencies, such as the potential for reflective cracking of subsequently placed asphalt concrete overlays. The fracture of the base will shorten the service life of the pavement. The quality of the CSM base is directly related to the bearing capacity and integrity of the whole pavement structure. It is of practical significance to further study the fatigue failure behavior of CSM material for the long-term performance of the pavement. The CSM material is a typical heterogeneous multiphase composite. On the mesoscale, CSM consists of aggregate, cement mortar, pores, and the interface transitional zone (ITZ). On the microscale, the hardened mortar contains a large number of capillary pores, unhydrated particles, hydrated crystals, etc., which makes the spatial distribution of its material properties stochastic. In addition, cement hydration, dry shrinkage, and temperature shrinkage can also produce micro-crack defects in cement mortar. These microcracks will have cross-scale evolution under load, resulting in structural fracture. Macroscopic complex deformation and mechanical response are the reflections of its microscopic and even mesoscale composition and structure. This study summarized the existing studies on the mesoscopic properties of CSM materials, respectively from the three aspects of mesostructure, structural characterization, and mesoscale fatigue damage analysis, to help the development of long-life pavement. The future research direction is to explore the mesoscale characteristics of CSM using multi-scale representation and analysis methods, to establish the connection between mesoscale characteristics and macroscopic mechanical properties.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 71-86"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progresses of fibers in asphalt and cement materials: A review","authors":"Jing Li ,&nbsp;Ling Yang ,&nbsp;Lu He ,&nbsp;Ruiwen Guo ,&nbsp;Xinyu Li ,&nbsp;Youchao Chen ,&nbsp;Yaseen Muhammad ,&nbsp;Yu Liu","doi":"10.1016/j.jreng.2022.09.002","DOIUrl":"https://doi.org/10.1016/j.jreng.2022.09.002","url":null,"abstract":"<div><p>Asphalt mixtures and cement concrete are an important material in the construction of roads, highways and buildings, and there has been a lot of research about the improvement of their performance. Among them, fibers are commonly used in the construction industry because of their superior properties as reinforcing materials that can provide a proper interfacial action between the fibers and the substrate. This review classifies fibers into natural fibers, inorganic fibers and polymer fibers according to their sources and properties. It summarizes and compares the characteristics, modification methods, usage requirements and research status of each type of fiber in asphalt and cement construction materials, and analyzes the problems and challenges faced by fibers in their applications. The evaluation results show that various types of fibers can enhance the fracture resistance, tensile strength and rutting resistance of asphalt to a certain extent, improve the high temperature performance and viscoelasticity of asphalt, and have a certain effect on the fatigue resistance and road water resistance of asphalt mixes. The fibers also provide better tensile, compressive and abrasion resistance to cement concrete and improve the brittleness and crack resistance of ordinary cement. Besides, for some defects of various types of fibers in construction materials, such as biodegradability, dispersibility and surface inertness of fibers, the targeted modification of fibers is introduced based on physical and chemical modification methods to improve the performance impact of modified fibers in various conditions of application.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 35-70"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheological and physicochemical characteristics of asphalt mastics incorporating lime kiln dust and dolomite powder as sustainable fillers","authors":"Najib Mukhtar ,&nbsp;Mohd Rosli Mohd Hasan ,&nbsp;Hanizah Osman ,&nbsp;Zainiah Mohd Zin ,&nbsp;Khairul Anuar Shariff ,&nbsp;Nur Izzi Md. Yusoff ,&nbsp;Ashiru Sani","doi":"10.1016/j.jreng.2023.01.001","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.001","url":null,"abstract":"<div><p>The filler-bitumen interaction mechanism is one of the most essential phases for comprehending the asphalt mixture's performance. However, despite numerous studies, in-depth knowledge of filler-bitumen reciprocity at a microscale level is yet to be ascertained. The goal of this research is to gain a better understanding of the filler-bitumen microscale interaction in terms of the synergy and coaction between the physicochemical and rheological performance of mastics due to filler inclusions. The rheological properties of two sustainable mastics, dolomite powder (DP) and lime kiln dust (LKD), together with a neat PEN 60/70 binder, were analysed based on a temperature sweep at elevated temperature conditions. Meanwhile, frequency sweep and multiple stress creep recovery (MSCR) tests were also conducted at pavement serviceability temperature using the dynamic shear rheometer (DSR). Physicochemical tests using a scanning electron microscope (SEM) and energy dispersive X-rays (EDX) were conducted to analyse the impact of parameters such as particle shape, grain size, texture, and chemical compositions. The DSR test results showcased how the incorporation of fillers in asphalt binder considerably improved the performance of the binder in terms of rutting and fatigue. Likewise, its strain and non-recoverable compliance parameters were substantially reduced at higher filler and binder concentrations. Physical filler attributes of low rigden voids (R.V), high fineness modulus (FM), and high specific surface area (SSA) led to greater interfacial stiffness and elasticity in LKD mastics compared to DP mastics at different loading frequencies and temperature levels. The SEM/EDX results also indicated that the elemental calcium and carbon composition of each filler component, together with its grain morphology, strongly influenced its rheological performance.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 98-112"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Materials, preparation, performances and mechanism of polyurethane modified asphalt and its mixture: A systematic review","authors":"Chaohui Wang,&nbsp;Shuai Huang,&nbsp;Qian Chen,&nbsp;Xiaoping Ji,&nbsp;Kaixi Duan","doi":"10.1016/j.jreng.2023.01.002","DOIUrl":"https://doi.org/10.1016/j.jreng.2023.01.002","url":null,"abstract":"<div><p>With the rapid development of asphalt pavement technology, it has attracted considerable attention to improving the durability of asphalt pavement. An effective action is to use modified asphalt with high performance and durability. Polyurethane (PU) has been used in asphalt pavement engineering to enhance the durability and service life of asphalt pavement because of its excellent high-temperature performance, toughness, wear resistance, aging resistance and oil resistance. However, PU modified asphalt technology is still in the exploratory stage. The preparation, modification mechanism and working performances of PU modified asphalt need to be further clarified. Therefore, this paper summarized the research progress of PU modified asphalt and its mixture. The composition of PU modified asphalt was introduced. The addition methods of PU materials and preparation process parameters of the PU modified asphalt were determined. The modification mechanism of PU on asphalt was discussed. The effects of polyurethane on asphalt were analyzed and the road performances of its mixture were evaluated. Finally, the development tendency towards PU modified asphalt and its mixture were forecasted.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 16-34"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on evaluation of crack resistance of asphalt mixture by semi-circular bending test","authors":"Yongjun Meng ,&nbsp;Weikang Kong ,&nbsp;Chaoliang Gou ,&nbsp;Shenwen Deng ,&nbsp;Yirong Hu ,&nbsp;Jing Chen ,&nbsp;Liupeng Fan","doi":"10.1016/j.jreng.2022.07.003","DOIUrl":"https://doi.org/10.1016/j.jreng.2022.07.003","url":null,"abstract":"<div><p>Although there are many kinds of fracture tests to choose from in evaluating the crack resistance of asphalt mixture, the semi-circular bending (SCB) test has attracted a lot of attention in the academic road engineering community because of its simplicity, stability, and flexibility in testing and evaluation. The SCB test has become a common method to study the cracking resistance of asphalt mixture in recent years. This paper mainly summarizes the overview of the SCB test, summarizes some research results and common characterization parameters of the SCB test method in monotone test and fatigue test in recent years, and predicts and suggests the research direction of the SCB test in the future. It is found that the research on the monotonic SCB test is more comprehensive, and the research on the SCB fatigue test needs to be further improved in the aspects of loading mode, characterization parameter selection, and so on. Researchers can flexibly adjust the geometric dimensions and the test parameters of semi-cylindrical specimens, and conduct comprehensive analysis combined with the results of numerical simulation. The crack resistance of asphalt mixture can be comprehensively evaluated by fracture energy, fracture toughness, stiffness, flexibility index and other fracture indicators, combined with the crack propagation of the specimen. The analysis of numerical simulation can confirm the test results. In order to standardize the setting of fatigue parameters for future application, it is necessary to standardize the setting of bending performance.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 87-97"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-site health monitoring of cement concrete pavements based on optical fiber sensing technology","authors":"Huaping Wang ,&nbsp;Yibin Wu ,&nbsp;Cong Chen ,&nbsp;Yanxin Guo","doi":"10.1016/j.jreng.2022.09.003","DOIUrl":"https://doi.org/10.1016/j.jreng.2022.09.003","url":null,"abstract":"<div><p>Premature stress of cement concrete pavements is the coupled action of construction technique, structural material and environmental action. It is quite difficult to accurately get the actual stress distribution merely based on the theoretical or simulation analysis. Therefore, in-situ health monitoring is particularly significant to obtain the stress or strain information for the assessment on structural performance of cement concrete pavements. To contribute this topic, different kinds of FBG based sensors have been specially designed to measure the temperature, pressure and deformation in cement concrete pavements. A relatively long-term monitoring has been conducted to collect the effective data after the solidification of the pavement lasts for about 15 ​d. Data analysis indicates that the temperature variation inside the pavement was very stable, with maximum amplitude smaller than 2.25 °C in Sep. 2020. The longitudinal, transverse and vertical deformations of the pavement behaved in non-uniform distribution, and partial measuring points suffered from large tensile force. The concrete course had better deformation resistance than that of the soil base, and local interfacial micro void defects existed in the soil base. The preliminary results can help to understand the actual structural performance of cement concrete pavements based on the optical fiber sensing system.</p></div>","PeriodicalId":100830,"journal":{"name":"Journal of Road Engineering","volume":"3 1","pages":"Pages 113-123"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}