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2023

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Articles 91 - 120 of 504

Full-Text Articles in Construction Engineering and Management

Application Of Dry Sbs Modification Technology In Yanhai Highway, Zhang Han, Meng Chunlin, Zhao Mingfang, Lu Chuanzhong, Ji Guoqi Sep 2023

Application Of Dry Sbs Modification Technology In Yanhai Highway, Zhang Han, Meng Chunlin, Zhao Mingfang, Lu Chuanzhong, Ji Guoqi

Journal of China & Foreign Highway

Dry SBS-modified asphalt pavement technology is to produce SBS-modified asphalt mixtures by adding specific SBS modifiers, which aims to solve the performance degradation of SBS-modified asphalt in transportation and storage. By relying on the coastal highway repair projects, this paper compared the effects of different dry SBS mixing contents on the test results by the indoor dry SBS and matrix asphalt compatibility test and asphalt mixture performance evaluation test. Meanwhile, based on the test results, the recommended dry SBS mixing content for the coastal highway upper layer milling and resurfacing maintenance project was proposed and applied on a large scale …

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Analysis Of Factors Affecting Construction And Demolition Waste Reduction In Egypt, Ayman Ahmed Ezzat Othman, Ahmed Osama Daoud, Obas John Ebohon, Ali Bayyati Sep 2023

Analysis Of Factors Affecting Construction And Demolition Waste Reduction In Egypt, Ayman Ahmed Ezzat Othman, Ahmed Osama Daoud, Obas John Ebohon, Ali Bayyati

Architectural Engineering

Construction projects are associated with construction and demolition waste (CDW) generated at different stages. In Egypt’s case, the CDW problem has become a significant challenge, and the need to find sustainable solutions is overwhelming. Based on recent investigations in the literature, it was found that six main factors are affecting CDW reduction (CDWR) as follows: (1) waste-efficient materials procurement measures; (2) waste-efficient materials procurement models; (3) green materials procurement approach; (4) legislation; (5) culture & behaviour; and (6) awareness. In this study, a representative sample of Egyptian construction firms was screened to (1) investigate the applicability and effectiveness of CDWR …

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Data-Driven Analysis Of Construction Bidding Stage-Related Causes Of Disputes, Muaz O. Ahmed, Islam H. El-Adaway Sep 2023

Data-Driven Analysis Of Construction Bidding Stage-Related Causes Of Disputes, Muaz O. Ahmed, Islam H. El-Adaway

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Construction bidding is a complex process that involves several potential risks and uncertainties for all the stakeholders involved. Such complexities, risks, and uncertainties, if uncontrolled, can lead to the rise of claims, conflicts, and disputes during the course of a project. Even though a substantial amount of knowledge has been acquired about construction disputes and their causation, there is a lack of research that examines the causes of disputes associated with the bidding phase of projects. This study addresses this knowledge gap within the context of infrastructure projects. In investigating and analyzing the causation of disputes related to the bidding …

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Bim And Digital Twins In Infrastructure Projects: An Overview From The Transportation Professional's Perspective, Natállia Mendes Aug 2023

Bim And Digital Twins In Infrastructure Projects: An Overview From The Transportation Professional's Perspective, Natállia Mendes

LSU Master's Theses

Transport infrastructure has undergone significant changes in recent years due to the digitalization of construction methods. Consequently, there is an increasing demand for more productive and cost-effective technologies to optimize various aspects such as time, cost, changes, waste, and errors in projects. Notably, technologies such as Building Information Modeling (BIM) and Digital Twin (DT) hold the potential to enhance the performance of infrastructure projects. While BIM has received substantial attention in recent years, Digital Twin is relatively new to the construction industry. This leads to a scarcity of studies on DT and its integration with other emerging technologies like BIM. …

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Deep Learning Techniques For Efficient Evaluation Of Asphalt Pavement Condition, Kamel Mahdy, Ahmed Zekry, Mohamed Moussa, Ahmed Mohamed, Hassan Mahdy, Mohamed Elhabiby Aug 2023

Deep Learning Techniques For Efficient Evaluation Of Asphalt Pavement Condition, Kamel Mahdy, Ahmed Zekry, Mohamed Moussa, Ahmed Mohamed, Hassan Mahdy, Mohamed Elhabiby

Mansoura Engineering Journal

For the last few decades, researchers have been devising a simple and cost-effective method to evaluate pavement distresses to give decision-makers adequate feedbacks about the pavement condition of a certain road. Fortunately, with the evolution and progression of computer vision tools and techniques, good results had been achieved regarding the detection, classification, and quantification of road distress. In this paper, a new efficient process of road distress analysis using deep learning models is introduced. This new process was tested on a collected road dataset to evaluate the efficiency and speed of this low-cost road maintenance system. Promising results were obtained …

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Skills Matter – Up-Skilling Across Construction Stakeholders For Emerging Roles, Avril Behan, Paul Mccormack, Barry Mcauley Aug 2023

Skills Matter – Up-Skilling Across Construction Stakeholders For Emerging Roles, Avril Behan, Paul Mccormack, Barry Mcauley

Conference Papers

The EU’s Climate Target Plan To 2030 (European Union 2020b) of achieving at least 55% reduction in Green House Gas emissions from 1990 levels, delivering towards a climate-neutral economy by 2050, requires systems-level change in the way we design, construct, and operate our built assets. Funding initiatives, such as co-ordinated by BUILD UP Skills, aim to deliver upskilling to the market but targets set by the European Skills Agenda may not be reached at current achievement levels. This paper presents the results of one completed and the progress of one ongoing Horizon 2020 funded project, BIMcert and ARISE, respectively. Learning …

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An Occupant-Centric Energy Modeling And Simulation In Office Buildings, Seddigheh Norouziasl Aug 2023

An Occupant-Centric Energy Modeling And Simulation In Office Buildings, Seddigheh Norouziasl

LSU Doctoral Dissertations

Building energy use is highly sensitive to occupants’ energy-related behaviors, including their presence and interaction with different building systems. Modeling and simulation of occupants’ energy-related behavior play an essential role in accurately predicting building energy consumption. Simplifying occupancy parameters in building performance simulation tools can lead to discrepancies between the simulated and actual building energy performance. The main goal of this research is to simulate the occupants’ energy-related behavior in office buildings and utilize the occupancy data to accurately predict building energy performance. Our objective is to increase building energy efficiency and reduce energy consumption while ensuring occupants' comfort, especially …

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The Extent Of Drone Education Being Taught In Asc Schools To 4-Year Construction Students, Cheran Teja Dumpati Aug 2023

The Extent Of Drone Education Being Taught In Asc Schools To 4-Year Construction Students, Cheran Teja Dumpati

All Theses

The technology of Unmanned Aircraft Systems (UAS) is growing rapidly in many fields and has become one of the skills in demand in the industry. Universities are one of the primary sources of teaching drone technology with a career-oriented approach. The goal of this study is to investigate the content of the drone curriculum being taught in Associated Schools of Construction (ASC) schools. This includes the topics covered, practical training offered, and the key deliverables taught. This information serves as a foundation for the schools that are looking forward to start drone courses in their department. The research found that …

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Analyzing The Labor Shortage In The Construction Industry And The Best Practices To Increase Worker Satisfaction, Cade Batchman Aug 2023

Analyzing The Labor Shortage In The Construction Industry And The Best Practices To Increase Worker Satisfaction, Cade Batchman

Construction Management

The construction industry is facing a significant labor shortage, which has far-reaching implications for the industry and the economy. This paper explores the causes of the shortage and the practices being implemented to address it. Economic changes, technological advancements, union/open shop dynamics, educational shifts, and the industry's image all contribute to the shortage. The economic rebound from the 1980s recession and the lack of new entrants into the field have created a demand-supply gap. Additionally, slow adoption of technology and the perception of construction work as physically demanding and risky have deterred potential workers. The decline in union membership has …

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Correlation Analysis Between External Damages And Transverse Load Distribution Capacit Y Of Hollow Slab Bridges, Cao Hao, Sun Dunhua, Wang Zichen, Zhao Fuli, Sun Haipeng, Xiong Wen Jul 2023

Correlation Analysis Between External Damages And Transverse Load Distribution Capacit Y Of Hollow Slab Bridges, Cao Hao, Sun Dunhua, Wang Zichen, Zhao Fuli, Sun Haipeng, Xiong Wen

Journal of China & Foreign Highway

To correctly evaluate the service status of prefabricated hollow slab girder bridge, based on the measured data of apparent disease and load test of hollow slab girder bridge in reconstruction and expansion project, this paper first analyzed the data characteristics of the beam body, hinge joints, and support disease samples and obtained their statistical distribution rules. Then, according to the typical diseases (transverse cracks and hinge cracks at the bottom of the beam), the BP neural network was used to build a correlation model for them, and the close correlation between the two typical diseases of hollow slab girder bridge …

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Research Of Disease Analysis And Reinforcement Technology For Typical Orthotropic Bridge Deck, Guo Fukuan, Zhou Shangmeng Jul 2023

Research Of Disease Analysis And Reinforcement Technology For Typical Orthotropic Bridge Deck, Guo Fukuan, Zhou Shangmeng

Journal of China & Foreign Highway

In order to effectively solve the disease problem of orthotropic steel bridge decks, this paper relied on a steel box girder cable-stayed bridge deck reinforcement project to carry out steel bridge deck disease analysis and reinforcement technology research. The results show that the main disease of steel bridge decks is fatigue cracking. The fatigue cracks are numerous, short, and deep, and they continuously grow and cause more severe disease. The excessive fatigue stress amplitude is the main factor leading to the fatigue cracking of steel bridge decks. Once the crack occurs, the stress amplitude of the crack tip increases continuously, …

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Review Of Research Progress Of Frame Beam Anchore D Structure In Slope Supporting, Zhang Junhui, Zhou Qinwei, Li Feng, Zhang Shiping Jul 2023

Review Of Research Progress Of Frame Beam Anchore D Structure In Slope Supporting, Zhang Junhui, Zhou Qinwei, Li Feng, Zhang Shiping

Journal of China & Foreign Highway

This paper summarized the research status of frame beam anchored structures in slope supporting and reinforcement engineering in China and abroad. It analyzed the results of structural design, model test, and field construction. Through induction and analysis, it is found that the current design of frame beam anchored structure has certain limitations, and it is necessary to form a universal design theory and method. The model test of frame beam anchored structure in slope supporting is limited by the test equipment and conditions and fails to be carried out on a large scale. The key points and standards of the …

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Experimental Study On Interface Fatigue C Haracteristics Of Asphalt P Avement Pothole Patch Under External Factors, Ai Changfa, Shao Zhutao, Huang Yangquan, Ren Dongya Jul 2023

Experimental Study On Interface Fatigue C Haracteristics Of Asphalt P Avement Pothole Patch Under External Factors, Ai Changfa, Shao Zhutao, Huang Yangquan, Ren Dongya

Journal of China & Foreign Highway

After the asphalt pavement patch for potholes is put into use, the interface joints around it are prone to fatigue and durability problems under the action of external factors such as the natural environment and driving load effect. In order to analyze the fatigue characteristics of the repaired interface joints under the action of external factors, the four-point bending fatigue test and pull-out test, combined with the results of orthogonal analysis, were used to determine the best bonding scheme of the repaired interface. The influence of external factors such as temperature, frequency, and strain level on the fatigue life of …

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Case Study Of Steel Wire Corrosion In Hoist Cable Of Half ⁃Through Arch Bridge, Xu Hongsheng, Jiang Lei, Yan Donghuang Jul 2023

Case Study Of Steel Wire Corrosion In Hoist Cable Of Half ⁃Through Arch Bridge, Xu Hongsheng, Jiang Lei, Yan Donghuang

Journal of China & Foreign Highway

In order to understand the causes and development rules of steel wire corrosion diseases inside the hoist cable of half⁃through and through arch bridges, this paper systematically studied the defects and loopholes of the protection system for the hoist cable of two half⁃through steel arch bridges by disintegrating the old hoist cables of Yuehai Bridge in Yinchuan and Xiangjiang Bridge in Heishipu Street in Changsha City. It probed into the distribution rules of corrosion diseases of steel wire inside the hoist cables. The main reasons leading to the difference in steel wire corrosion disease inside the old hoist cables of …

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Influence Of Proximity Construction Of A New Pile Foundation On Adjacent Metro Tunnel, Jin Shengji, Mu Anxin, Bi Bo, Xu Chao, Yu He Jul 2023

Influence Of Proximity Construction Of A New Pile Foundation On Adjacent Metro Tunnel, Jin Shengji, Mu Anxin, Bi Bo, Xu Chao, Yu He

Journal of China & Foreign Highway

The construction of a bridge pile foundation and cap not only causes disturbance to its foundation and surrounding soil but also has a certain influence on adjacent existing structures. In order to study the influence of new pile foundation proximity construction on tunnels adjacent to subway sections, this paper took the pile foundation construction process of auxiliary bridge extension on both sides of Shenyang Changqing Bridge as the research object and adopted Midas/GTS finite element numerical simulation and construction monitoring methods to study the influence of new pile foundation proximity construction on tunnels adjacent to subway sections. The results show …

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Research On Cyclic Accumulative Strain Characteristics Of Structured Soft Clay, Ding Zhi, Yu Jiangang, Sun Miaomiao, Wang Jiawei, Ye Ke Jul 2023

Research On Cyclic Accumulative Strain Characteristics Of Structured Soft Clay, Ding Zhi, Yu Jiangang, Sun Miaomiao, Wang Jiawei, Ye Ke

Journal of China & Foreign Highway

Due to its structural properties, natural soft clay is prone to produce large cumulative deformation under cyclic loads such as traffic, which has a great impact on engineering. In order to solve the deformation problem caused by structural failure of soft clay under dynamic action, dynamic characteristics of undisturbed soft clay near a highway in Hangzhou were tested by the dynamic triaxial device under cyclic loading, and the dynamic characteristics of saturated undisturbed soft clay under different effective consolidation confining pressures, vibration frequencies, and dynamic stress ratios under K0 (static earth pressure coefficient) consolidation conditions were studied. The results show …

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Experimental Study On Time ⁃Varying Characteristics Of Saturated Water Content Of Granite Residual Soil In Acid⁃Etched Environment, Zhang Maolin, Xie Qingzhong, Fu Helin, Zhang Meng, Li Qinglong, Dong Hui Jul 2023

Experimental Study On Time ⁃Varying Characteristics Of Saturated Water Content Of Granite Residual Soil In Acid⁃Etched Environment, Zhang Maolin, Xie Qingzhong, Fu Helin, Zhang Meng, Li Qinglong, Dong Hui

Journal of China & Foreign Highway

In order to clarify the correlation between saturated water content variability and slope stability, characteristic tests on saturated water content of granite residual soil affected by acid were carried out. Direct shear tests were carried out to test the variation rule of saturated water content and its characteristic value under the influence of vertical loading and acidification time, and the internal causes of variation were deduced based on the structural characteristics obtained by microscope electron microscopy. The results show that: ① The vertical pressure σ = 300 kPa is the turning point of the linear and nonlinear relationship, and under …

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Effect Of Activator On Compressive Strength Of Steel Slag Powder Cement Soil, Chen Fei, Wang Yanchun, Du Sujun Jul 2023

Effect Of Activator On Compressive Strength Of Steel Slag Powder Cement Soil, Chen Fei, Wang Yanchun, Du Sujun

Journal of China & Foreign Highway

In order to reasonably solve the environmental pollution caused by steel slag, steel slag powder was used to improve cement soil. The optimal mix ratio was determined by a laboratory unconfined compressive strength test to prepare steel slag powder cement soil. In view of of low activity and limited compressive strength enhancement effect of steel slag powder, three kinds of activators including sodium hydroxide, silica fume, and calcium chloride were selected to be added to steel slag powder cement soil, so as to study the strength variation rule. The results show that the strength of cement soil can be improved …

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Influence Of Steel Fiber And Polymer Emulsion On Mechanical Properties And Microstructure Of Concrete, Guo Guanglei, Sun Shiqiang, Li Ying, Zheng Yiwei, Mei Yingjun Jul 2023

Influence Of Steel Fiber And Polymer Emulsion On Mechanical Properties And Microstructure Of Concrete, Guo Guanglei, Sun Shiqiang, Li Ying, Zheng Yiwei, Mei Yingjun

Journal of China & Foreign Highway

The microstructure and mechanical properties of concrete were improved by adding steel fiber and polymer emulsion. The working properties and mechanical properties of steel fiber concrete, polymer emulsion-modified concrete, and steel fiber polymer concrete were tested at 3 d, 28 d, and 90 d. Nitrogen adsorption test, mercury injection test, and density method were used to obtain the total pore volume, median pore size, and closed porosity of concrete. The influence of steel fiber and polymer emulsion on the microstructure and mechanical properties of concrete was analyzed. The results show that the compressive strength of concrete after adding steel fiber …

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Research On Budget Quota Of Highway Bridge Crack Treatment, Chang Ding, Yu Licun Jul 2023

Research On Budget Quota Of Highway Bridge Crack Treatment, Chang Ding, Yu Licun

Journal of China & Foreign Highway

In view of the lack of a unified budget quota for concrete structure crack treatment, a large number of measured data and fuzzy analytic hierarchy process were used to calculate the consumption of budget quota through the amplitude difference coefficient of construction quota. According to the technical specifications of highway bridge reinforcement engineering, reasonable crack treatment methods and engineering contents were determined, and the quota of structure crack treatment was prepared by using the physical quantity. The quota cost was compared with actual engineering cases. The results show that the quota cost and the actual project cost are basically at …

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Effect Of Nano ⁃Metakaolin On Frost Resistance Of Concrete, Li Zhenfa Jul 2023

Effect Of Nano ⁃Metakaolin On Frost Resistance Of Concrete, Li Zhenfa

Journal of China & Foreign Highway

The denudation per unit area, relative dynamic elastic modulus, mechanical strength, and fracture characteristics of concrete with different nano-metakaolin contents before and after freezing and thawing were studied. The results show that nano-metakaolin can significantly improve the freezing resistance of concrete, and the denudation per unit area and relative dynamic elastic modulus loss rate of modified concrete are significantly improved compared with the reference group. The mechanical strength and fracture properties of nano-mekaolin-modified concrete before and after freezing and thawing are higher than those of the control group, and the mechanical strength, fracture toughness, and fracture energy loss rate are …

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Research Progress On Properties Of Fiber Modified Asphalt Mixture, Liang Bo, Zhang Haitao, Liu Zheng, Liao Wei Jul 2023

Research Progress On Properties Of Fiber Modified Asphalt Mixture, Liang Bo, Zhang Haitao, Liu Zheng, Liao Wei

Journal of China & Foreign Highway

As a kind of asphalt mixture additive and stabilizer, fiber can effectively improve the performance index of asphalt pavement and extend the service life of asphalt pavement. Based on the analysis of relevant literature in China and abroad, this paper summarized the action mechanism of fiber modified asphalt and asphalt mixture, the effect of fiber content on properties, and the characteristics of different types of fiber modified asphalt. Fiber can effectively improve the high temperature property, low temperature property, and fatigue property of asphalt mixture, especially the resistance to low temperature and fatigue cracking of asphalt mixture. The modification effect …

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Optimization Design Of Uhpc ⁃Nc Continuous Box Girder Bridge Based On Response Surface Method, Guan Weiyi, Duan Luqi Jul 2023

Optimization Design Of Uhpc ⁃Nc Continuous Box Girder Bridge Based On Response Surface Method, Guan Weiyi, Duan Luqi

Journal of China & Foreign Highway

In order to solve the two major problems of mid-span deflection and cracking in the late stage of the long-span bridge, a UHPC-NC hybrid beam design scheme was proposed, and some design parameters were optimized based on the response surface method. By optimizing the local parameters, namely the thickness of the roof, web, and bottom plates of the mid-span section, and the overall parameters, such as the UHPC replacement ratio, the number of beam curves, and the height of the mid-span beam, the optimal parameter combination was obtained as follows: roof thickness of 22 cm, web plate thickness of 25 …

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Thickness Detection Of Reinforced Concrete Protective Layer Based On Environ Mental Calibration, Hong Hua, Xu Jianhong, Cao Sugong, Fu Junlei Jul 2023

Thickness Detection Of Reinforced Concrete Protective Layer Based On Environ Mental Calibration, Hong Hua, Xu Jianhong, Cao Sugong, Fu Junlei

Journal of China & Foreign Highway

In order to solve the problem of inaccurate detection of reinforced concrete protective layer thickness in engineering, this paper studied and formed a reasonable and perfect method and calibration procedure for the detection of reinforced concrete protective layer thickness in highway and water transportation engineering by using the analysis of influencing factors. The results show that the accuracy of measuring the protective layer thickness of reinforced concrete in practical engineering can be effectively improved. The production of standard instrument calibration specimens can be saved, and the testing process can be standardized.

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Study On Influence Of Freeze ⁃Thaw Cycles On Shear Properties Of Fly Ash Modified Saline Soil, Cheng Zhuo, Cui Gaohang, Gao Zening, Hou Zhao, Gang Haohang Jul 2023

Study On Influence Of Freeze ⁃Thaw Cycles On Shear Properties Of Fly Ash Modified Saline Soil, Cheng Zhuo, Cui Gaohang, Gao Zening, Hou Zhao, Gang Haohang

Journal of China & Foreign Highway

In order to explore the shear strength of fly ash-modified saline soil subgrade under the freeze-thaw cycle, saline soil samples from Suihua–Daqing Expressway were selected for direct shear test under different fly ash contents. The results show that the cohesive force and internal friction angle of the saline soil decrease after several freeze-thaw cycles. With the increase in fly ash content, the internal friction angle, cohesive force, and shear strength of the improved saline soil increase first and then decrease. When the fly ash content is 15%, the cohesive force, internal friction angle, and other mechanical indexes of the saline …

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Construction And Management Practice Of Green Highways In Qinling Mountains, Gao Shuohan, Zhang Lei, Zhao Fuqiang, Wang Dong, Li Gang, Liu Xuexin, Yao Jialin Jul 2023

Construction And Management Practice Of Green Highways In Qinling Mountains, Gao Shuohan, Zhang Lei, Zhao Fuqiang, Wang Dong, Li Gang, Liu Xuexin, Yao Jialin

Journal of China & Foreign Highway

In order to practice the concept of green development and promote the transformation and upgrading of highways in Qinling Mountain areas, the paper took Taibai–Fengxian Expressway, a typical demonstration project of green highway in Shaanxi Province as the basis to explore the practical experience of green highway construction suitable for Qinling Mountain areas. The project is located in the hinterland of the Qinling Mountains, with a sensitive water environment, important ecological functions, and rich tourism resources. In addition, it adopts EPC mode. Through the all-round and whole-process implementation of the green concept, the project was planned and launched from the …

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Numerical Analysis Of Structural Characteristics Of Prefabricated Ecological Grid Retaining Walls, Wang Xinquan, Zhu Cong, Huang Tianyuan, Diao Hongguo, Peng Xijian Jul 2023

Numerical Analysis Of Structural Characteristics Of Prefabricated Ecological Grid Retaining Walls, Wang Xinquan, Zhu Cong, Huang Tianyuan, Diao Hongguo, Peng Xijian

Journal of China & Foreign Highway

The retaining wall is a common slope protection structure. In view of the current insufficient greening and high prefabricated retaining walls, prefabricated ecological grid retaining walls with high construction efficiency and greening features emerge. In order to explore the mechanical characteristics and influencing factors of prefabricated ecological grid retaining walls, Abaqus finite element software was used to discuss the mechanical characteristics of prefabricated ecological grid retaining wall columns and inclined shelves with different embankment heights and different fillings. The results show that different fill heights have different effects on the lateral displacement of the column, and the effect of fill …

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Macro And Micro Analysis Of Influence Mechanism Of Anti⁃Slide Pile Position On Slope Stability, Liu Ping, Wang Meijing, Zhang Shaoqiang, Zhang Yongsheng, Wang Denghua, Li Dongdong Jul 2023

Macro And Micro Analysis Of Influence Mechanism Of Anti⁃Slide Pile Position On Slope Stability, Liu Ping, Wang Meijing, Zhang Shaoqiang, Zhang Yongsheng, Wang Denghua, Li Dongdong

Journal of China & Foreign Highway

In order to study the influence mechanism of anti-slide pile position on the stability of the slope and optimize the supporting parameters of anti-slide piles reasonably, a three-dimensional continuous and discrete coupled numerical model of the slope was established based on the finite difference theory and discrete element theory of a highway cut slope in southwest China. The influence mechanism of anti-slide pile position on the stability of the cut slope was analyzed from macro and micro perspectives. The results show that the force chain of particles on the sliding surface is thin at the top and dense at the …

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Study On Improvement Of Early Skid Resistance Of Sma Asphalt Pavement Based On Spreading Grit, Jiang Zhaowei, Wei Jincheng, Liu Hang, Sun Qiang, Li Xia Jul 2023

Study On Improvement Of Early Skid Resistance Of Sma Asphalt Pavement Based On Spreading Grit, Jiang Zhaowei, Wei Jincheng, Liu Hang, Sun Qiang, Li Xia

Journal of China & Foreign Highway

The early skid resistance of SMA 13 pavement is poor. To address this issue, the existing research results were analyzed, and physical detection was conducted. It was found that the large structure pavement failed to provide good early skid resistance detection value. Based on the principle of spreading abrasive materials, two methods to improve the early skid resistance of SMA pavement were proposed. The particle size of abrasive material was determined to be 2.36–4.75 mm, and the spreading amount was 0.82 kg/m2, which verified the safety of the methods. The test results show that the two methods can slightly improve …

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Crack Resistance Of Basalt Fiber Asphalt Pavement Under The Coupling Effect Of Low Temperature⁃Load In Heavy Freezing Area, Guo Yinchuan, Hao Chenwei, Guo Han, Fan Li, Shen Aiqin, Wang Lusheng Jul 2023

Crack Resistance Of Basalt Fiber Asphalt Pavement Under The Coupling Effect Of Low Temperature⁃Load In Heavy Freezing Area, Guo Yinchuan, Hao Chenwei, Guo Han, Fan Li, Shen Aiqin, Wang Lusheng

Journal of China & Foreign Highway

In view of the cold working environment and road diseases of asphalt pavement in the heavy freezing area of Inner Mongolia, a control index of pavement structure based on crack resistance was proposed. The calculation models of the newly built basalt fiber asphalt pavement structure and the pavement after cracks were established by using Ansys finite element software. The mechanical parameters, thermophysical parameters, and other parameters of the basalt fiber asphalt pavement were determined through laboratory tests, and the crack resistance indexes under the coupling action of low temperature and load were calculated, respectively. The fatigue life of basalt fiber …

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