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Preparation Of Water-Resistant Solid Waste-Based Solidifier And Study On Properties Of Solidified Soil, Yao Yanbo, Zhu Ting, Yang Guowei, Li Menglong

Journal of China & Foreign Highway

Under the background of the “carbon peaking and carbon neutrality ” goals, the improvement and resource utilization of industrial solid waste and waste soil have become increasingly important. High carbon emissions are generated during the production of traditional cement and lime-modified solidifiers, which exhibit poor crack resistance and tensile properties. In contrast, a composite organic-inorganic membrane can be formed by waterborne epoxy resin combined with C‒S‒H gel in cement soil to cement the internal flaky or spherical soil particles, thereby improving the tensile strength and water erosion resistance of the soil. In this paper, slag and desulfurization gypsum were selected …

Research On Key Technologies For Pavement Design Of Shenshan West Expressway Reconstruction And Expansion Project, Xu Weinan

Journal of China & Foreign Highway

In recent years, expressway reconstruction and expansion projects have been increasing, and expansions from four to eight lanes and from six to ten lanes are relatively common. In the design process of reconstruction and expansion, the rationality of the design for overlay, widening, and lap treatment of “white-to-black” pavement has a significant impact on pavement reconstruction quality. The formation of ultra-wide pavement after reconstruction, especially in sections such as acceleration and deceleration lanes, areas with small composite longitudinal slopes, and the bottom of concave curves, makes pavement drainage difficult, which affects driving safety to some extent. Meanwhile, milling waste generated …

Review On Self-Healing Capacity Of Asphalt Mixtures By Microwave Heating, Deng Yue, Dong Yuming, Sun Daquan

Journal of China & Foreign Highway

Asphalt pavement generates cracking damage under the action of vehicle loads and other factors, which triggers various distresses. Microwave heating technology can rapidly increase the temperature of mixtures, enhance the self-healing capacity of asphalt, and thereby repair the damage. The research progress on the self-healing capacity of asphalt mixtures by microwave heating was reviewed in this paper and summarized from four aspects:the self-healing mechanisms under microwave heating, test methods, evaluation indicators, and influencing factors of the self-healing capacity. The results indicate that microwaves promote the flow and healing of asphalt through multiple mechanisms;the loading states of mixtures were simulated by …

Analysis Of Mechanical Properties And Microscopic Discrete Element Study Of Foam Concrete Under Dry-Wet Cycles, Xu Ke, Zhang Jun, Kuang Yuyang

Journal of China & Foreign Highway

To reveal the effects of the number of dry-wet cycles and the material density gradient on the deterioration laws of macroscopic mechanical properties, microscopic damage mechanisms, and failure modes of foam concrete, foam concrete test blocks with densities of 800 kg/m3, 1 000 kg/m3, and 1 200 kg/m3 were investigated in this paper. Macro-micro joint tests and three-dimensional discrete element simulation methods were combined. Specifically, 25 dry-wet cycle tests, nuclear magnetic resonance pore analyses, and uniaxial compression tests were conducted, and a discrete element model considering particle expansion and contraction, as well as crystalline salt deterioration effects was constructed. The …

Study On Calculation Method For Deflection Of Pc Beams Subjected To Local Corrosion, Yao Shuhao, Yao Yan, Peng Jianxin, Xiao Junyi, Zhao Yang

Journal of China & Foreign Highway

To reasonably evaluate the increase in deflection of PC beams after local corrosion, a calculation method for deflection of corroded PC beams based on the stress and strain model of corroded reinforcement was proposed by considering the beam-arch effect formed by reinforcement corrosion and the degradation of bond strength between reinforcement and concrete. Bending tests on a batch of locally corroded PC beams were carried out to verify the calculation method, and a parameter analysis on the corrosion rate and corrosion position was conducted. The results show that the load ‒ deflection curves obtained by the calculation method are in …

Characterization Of Stress State Of Corrugated Steel Web Girders Based On Mann-Kendall Criterion, Dou Fei, Chen Feng

Journal of China & Foreign Highway

To reasonably characterize the stress state of corrugated steel web girders and determine the failure load, the stress state evolution pattern of corrugated steel web girders was investigated in this paper based on the structural stress state theory, relying on the model test of a continuous corrugated steel web composite box girder bridge with a span arrangement of (2. 65 + 4. 10 + 2. 65) m. First, the generalized strain energy density was constructed as a characteristic parameter using the longitudinal strain of the test girder, and then the strain energy density ‒ load curve was obtained. The Mann-Kendall …

Study On Mechanical Characteristics Of Hydraulic Climbing Formwork Structure For Variable Cross-Section Hollow Thin-Walled High Piers In Shallow Hilly Areas, Wang Chengye, Liu Chuanqi, Li Lei, Liang Bin, Li Wenjie

Journal of China & Foreign Highway

To address the problems of severe damage to the pier concrete caused by wall attachments of components such as guide rails and low climbing efficiency in traditional hydraulic climbing formwork construction, a new type of hydraulic climbing formwork structure suitable for the construction of variable cross-section hollow thin-walled high piers was designed based on the Miaolu River Bridge project of the Zhengzhou ‒ Luoyang Expressway in this paper. To ensure the safety of the structure during construction, a finite element model of the climbing formwork structure was established using Midas Civil;the stress and deformation of components such as formwork, climbing …

Research On Girder-End Displacement Control Of Long-Span Cable-Stayed Bridges Based On Nonlinear Spring And Damping Restraint Device, Sun Bailin, Chen Jinlin, Sun Wencheng, Xu Jixiang, Liu Shengzhi, Niu Huawei

Journal of China & Foreign Highway

To achieve the girder-end displacement control of long-span cable-stayed bridges under static and dynamic loads such as temperature, vehicle load, wind load, and earthquake, a new type of nonlinear spring and damping restraint device was developed in this paper, and a dynamic analysis finite element model of the structure was established. The influence laws of the limit parameter variations of the device on the girder-end displacement, the relative displacement between tower and girder, and the internal force at the tower bottom were analyzed, and reasonable parameter values were determined. On this basis, the dynamic responses of the long-span cable-stayed bridge …

Study On Effect Of Reinforcement Ratio On Failure Mode Of Y-Shaped Pier Under Vehicle Eccentric Load, Li Xinfeng, Lin Guangyi, Xia Hao, Li Min, Peng Weibing

Journal of China & Foreign Highway

To construct urban three-dimensional transportation systems and reduce space occupation under bridges, the large cantilever-Y-shaped pier system was applied as a substructure of urban viaducts, with its application demand increasing year by year. However, related research on its reinforcement ratio under vehicle eccentric load has been rarely conducted. Based on an engineering case of an expressway construction project in Jiaxing City, Zhejiang Province, a 1∶5 scaled finite element model was established using Abaqus. The reinforcement ratios of Y-shaped piers in four models were set to 0. 42%, 1. 17%, 1. 69%, and 2. 29%, respectively. Among them, the reinforcement ratio …

Analysis Of Bearing Capacity Of Large-Span Reinforced Concrete Box Arch Bridge Strengthened With Uhpc, Song Jianping, Chen Xiaohuang, Li Baojun, Yu Xinhua

Journal of China & Foreign Highway

To analyze the applicability of the ultra-high performance concrete (UHPC) reinforcement method for box arch bridges, a reinforcement project of a reinforced concrete box arch bridge with a span of 125 m was taken as the background in this paper. By analyzing the limitations of the steel plate bonding method in reinforcing large-span box arch bridges, a UHPC reinforcement scheme was proposed, and the corresponding simplified calculation formulas were established. The research results indicate that:① Before reinforcement, the box arch of the bridge exhibits a large eccentric compression failure. After pasting steel plates on the bottom slab of the box …

Numerical Simulation Of Retraction Effect Of Corroded Prestressed Steel Strands Based On Cohesive Contact, Xu Dejun, Li Jun, Yi Jiafei, Zhang Xiangzhen, Zhao Biao, Lin Yitian, Dai Lizhao

Journal of China & Foreign Highway

Concrete cracking and bond degradation caused by corrosion lead to retraction slip of prestressed steel strands and changes in transfer length. Simulating the retraction effect of corroded prestressed steel strands is a difficulty in current research. A numerical model for corroded prestressed concrete (PC) components based on Cohesive contact was established. The effects of different corrosion locations and corrosion rates on the retraction slip and transfer length of prestressed steel strands were analyzed. The rationality of the model was verified based on existing experimental data. Results indicate that Cohesive contact can effectively simulate the retraction effect of prestressed steel strands …

Study On Temperature Field And Temperature Effect Of A Continuous Rigid-Frame Bridge With Horizontal Bottom Cables, Li Guodong, Li Guangmao, Gao Yingjie, Huang Fanglin, Zhou De

Journal of China & Foreign Highway

To study the temperature field and temperature effects of a continuous rigid-frame bridge with horizontal bottom cables, a large-span prestressed concrete continuous rigid-frame bridge with a horizontally arranged bottom cable system was selected as the research object. A Python program was developed to calculate the solar radiation boundary conditions, and the Abaqus software was used to establish a two-dimensional transient heat conduction model of the bridge. The time-dependent temperature field of the bridge during summer and winter was analyzed. Based on this, the temperature effects caused by the vertical temperature gradient, transverse temperature gradient, effective temperature, and various temperature modes …

Discussion On Several Key Design Issues Of Small- And Medium-Span Single-Tower Concrete Self-Anchored Suspension Bridge, Yang Zi

Journal of China & Foreign Highway

For self-anchored suspension bridges, reasonable auxiliary span setting, cable force optimization, and structural system selection can not only effectively eliminate the negative reaction effect at the anchorage end, but also improve and optimize the mechanical performance of the stiffened girder. However, current theoretical research is mostly focused on large-span bridges crossing rivers, lakes, and seas, with fewer applications and a lack of corresponding attention in the field of small- and medium-span bridges. In particular, theoretical research on single-tower structures is relatively scarce. In this paper, combined with a practical engineering project, the bridge was studied using a simulation analysis method …

Analysis Of Temperature Field In Negative Temperature Tunnel Based On Material Thermal Parameter Tests, Xin Quanming, Zhang Feng, Zhao Zhongliang, Sun Zhenhua

Journal of China & Foreign Highway

In view of the temperature field problem of Asia ’s first four-season cross-country skiing tunnel reconstructed from an existing tunnel, based on the study of the thermal conductivity of tunnel materials by the HOTDISK method, steady-state heat transfer models under different protection conditions were established by using the finite element method and the multi-layer cylinder heat transfer theory, respectively. The temperature field distribution characteristics of the negative temperature tunnel were analyzed, and the influence laws and sensitivities of various factors were investigated. The results show that the freezing of the tunnel affects the material properties of the tunnel structure;the thermal …

Study On Cause Analysis And Treatment Of Pavement Arching Disease In Highway Tunnels In Water-Rich Soft Rock : A Case Study Of Yunling Tunnel On Shiyan‒Manchuanguan Section Of Fuzhou‒Yinchuan Expressway, Lei Zongjian, Huang Dan, Wu Zheng, Wei Guoyu

Journal of China & Foreign Highway

To explore the mechanism of pavement arching disease in phyllite soft rock tunnels and propose targeted disease treatment measures, based on the Yunling Tunnel in the Shiyan‒Manchuanguan section of the Fuzhou ‒ Yinchuan Expressway, typical tunnel diseases were investigated, and triaxial compression tests of phyllite in natural and saturated states were conducted to study the failure laws of the tunnel under the combined action of fault fracture zones and groundwater. The research results indicate that the compressive strength and elastic modulus of the rock in the saturated state are lower than those in the natural state, which demonstrates that the …

Simulation Study On Smoke Propagation Characteristics At Vault In Urban Bifurcated Tunnel Fire, Guo Xiao, Lyu Jianwei, Tan Xiangjun, Ni Chenyang, Wang Youwei, Li Yuyang

Journal of China & Foreign Highway

To explore the influence of wind speed on the smoke temperature and distribution characteristics of the bifurcated diverging tunnel fire, Hangzhou West Station Tunnel on National Highway G 235 was taken as the engineering background in this paper. The numerical simulation method was used to investigate the influences of different upstream wind speeds and fire source positions on the fire smoke propagation in the diverging expansion section. The results indicate that:① A higher wind speed at the tunnel entrance results in a shorter smoke backflow length in the tunnel, and the rate of smoke backflow in the tunnel decreases accordingly;② …

Research On Wing-Wall-Free Transition Between W-Beam Guardrail And Combined Bridge Guardrail, Jiang Guanglun, Shang Zhongping, Zhang Yinjiang, Wu Junhong, Li Zhen, Qian Jun

Journal of China & Foreign Highway

To address the transition problem between the W-beam guardrail and the combined bridge guardrail during the upgrading and reconstruction of in-service highway guardrails, an SB-level wing-wall-free transition section with simple construction and high efficiency was proposed. Computer simulation technology was adopted to study the stiffness transition, height transition, and cross-section transition of the wing-wall-free transition section. The guardrail stiffness transition was achieved by optimizing the column spacing and column cross-sectional dimensions. By comparing the contact area between the vehicle and the guardrail and the vehicle redirection situation under different height differences, it was preliminarily determined that the vehicle can be …

Short-Term And Long-Term Integrated Design Idea Of Expressway Interchange, Guo Liwei, Shi Jishu, Jia Kui, Zhang Rui

Journal of China & Foreign Highway

It is a general way to construct expressway interchanges by stages. The engineering construction cost, road network operational efficiency, and operational security are directly affected by the rationality of the scheme design. Considering the features of short-term and long-term integrated design of interchange, the necessity of research on design ideas was analyzed. Two short-term and long-term integrated design principles were defined, and their applicable conditions, advantages and disadvantages were analyzed. The main control factors of design principles were thus determined. With the main control factors as the criterion and design principle as the goal, the analytic hierarchy process (AHP) was …

Research On Intelligent Safety Control Of Deep Water Foundation Of Bridges Based On Digital Twins, Guo Feng, Li Ting, Mao Ali

Journal of China & Foreign Highway

To achieve real-time monitoring data collection, intelligent evaluation and warning of safety risks, and rapid disposal of emergency plans for steel cofferdam structures during the construction process of deep water foundations of bridges. Research on intelligent safety control of steel cofferdams of deep water foundations of bridges was conducted based on digital twins. Firstly, BIM software was used to construct a virtual model of the entire construction process of the steel cofferdam, and IoT devices were used to collect real-time data on the stress, displacement, and construction water level of the steel cofferdam structure. Secondly, by using the Web-GL engine …

Study On Influencing Factors Of Vehicle Exhaust Emissions At Signal-Controlled Intersections, Tu Shengwen, Guo Wenyu, Lei Meimei

Journal of China & Foreign Highway

To reveal the main factors influencing vehicle exhaust emissions at signal-controlled intersections and their action mechanisms, a professional software system for analyzing intersection vehicle fuel consumption and emissions, SIDRA INTERSECTION, was used as the research tool in this paper. The influencing factors and their variation laws of the exhaust emissions of carbon dioxide (CO2), nitrogen oxides (NOx), carbon monoxide (CO), and hydrocarbons (HC) in the intersection area were explored from the aspects of traffic flow characteristics, signal cycles, and signal timing schemes. The research results indicate that:① The average vehicle exhaust emissions at road intersections increase with the rise in …

Comparative Analysis Of Highway Carbon Emission Accounting Systems Between China And Britain, Liang Guangquan, Ding Lecheng, Xu Jin, Ren Zhen, Wang Wei, Liu Anyang

Journal of China & Foreign Highway

With the goal of “achieving carbon peak by 2030 and carbon neutrality by 2060” proposed by China in 2020, energy conservation and carbon reduction in the transportation industry have become particularly important. As an established industrialized country, Britain started its research on carbon emission reduction in the transportation sector relatively early. This paper compared and analyzed the similarities and differences between the highway carbon emission accounting systems of China and Britain, so as to explore their respective policy backgrounds, accounting methods, and application effects and provide relevant suggestions for highway carbon emission reduction in China. Through literature analysis and case …

Analysis Of Microscopic Crack Propagation In Polyurethane-Cement Stabilized Crushed Stone Based On Discrete Element Method, Yu Xin, Huang Yujie, Chen Chen, Jiang Ziqi, Wang Min, Ling Chenxin

Journal of China & Foreign Highway

To study the effect of polyurethane grouting on the crack repair performance of cement stabilized crushed stone, a microscopic model of cement stabilized crushed stone was established by the discrete element method (DEM) in this paper. SCB fracture simulation tests were conducted on specimens with different initial notch-to-depth ratios to obtain load ‒ displacement curves, and sensitivity analysis of microscopic parameters was performed. Then, by comparing microscopic characteristics such as crack propagation paths, crack types, and particle displacements before and after grouting, the repair effect of polyurethane grouting materials was evaluated. The results indicate that the grouting filler significantly enhances …

Pediatric Thyroid Cancer Lung Metastases And Rai: Long-Term Results, Ryan C Mueller, Nikhil Rammohan, Anthony J Apicelli, Ana Maria Arbelaez, Farrokh Dehdashti, Barry A Siegel, Vikas Prasad, Perry W Grigsby, Stephanie Markovina

2020-Current year OA Pubs

OBJECTIVES: Children with differentiated thyroid cancer (DTC) often present with lung metastases but historically have good outcomes. Radioactive iodine (RAI) is commonly used to treat these children. Given the rarity of this condition, little evidence detailing long-term outcomes and risk of radiation pneumonitis exists.

METHODS: We conducted a retrospective analysis of patients < 20 years old who received RAI for DTC lung metastases between 1973 and 2018. Disease-free survival (DFS) was calculated from diagnosis to last follow-up. Overall survival and rates of acute and late radiation pneumonitis were determined by chart review and obituary searches.

RESULTS: Sixteen patients met eligibility criteria. Fourteen presented with thyroid, nodal, and lung disease; one presented with thyroid and nodal disease with nodal and lung recurrence; and one presented with thyroid-only disease with nodal and lung recurrence. All patients underwent thyroidectomy, 10 underwent neck dissection, and four underwent …

The Scarlet - Volume Civ, No. 11 (April 24, 2026), Scarlet Staff

The Scarlet (Student Newspaper) (2011-present)

The April 24, 2026 edition of The Scarlet (est. 1939), Clark University's student-run newspaper. The Scarlet is intellectually and editorially independent of the University.

A Pentadic Rhetorical Analysis Of Malala Yousafzai’S Address To The United Nations’ Youth Assembly, Alexis Rehm

Pepperdine Journal of Communication Research

This paper is a rhetorical criticism of Malala Yousafzai’s 2013 address to the United Nations Youth Assembly using Kenneth Burke’s pentad. Malala Yousafzai’s address was delivered less than one year after surviving an assassination attempt by the Taliban. The address reframes access to education as a shared moral responsibility rather than a personal or political issue. By analyzing the scene, act, agent, agency, and purpose, this analysis shows how Malala constructs rhetorical authority through personal narrative, forgiveness, and moral appeal. Her speech positions education as a universal human right and challenges global audiences to move from sympathy to accountability.

Between The Middle Kingdom And The Middle Way: An Analysis Of State Power And Sacred Authority In The Sino-Tibet Conflict, Madison M. Berry, Aimee N. Ebeling, Jayden A. Hanson

Pepperdine Journal of Communication Research

This research paper addresses the growing concerns of the Sino-Tibetan conflict by analyzing the relationship between the People’s Republic of China (PRC) and the Tibetan Autonomous Region (TAR) through an intercultural communication and negotiation lens. By analyzing historical relationships between the two parties and comparing them to similar contemporary situations, this paper examines the sinicization of the Tibetan people. By exploring the “Old Tibet” and “New Tibet” narratives, while acknowledging the centrality of the Dalai Lama to both parties, it also addresses territorial disagreements and the contrasting understandings of sovereignty and modernization, which fuel the conflict. Finally, a policy framework …

Partnership For Observation, Leadership, And Arctic Resilience (Polar): Strengthening Eu–Us Cooperation Through Technology, Trade, And Arctic Governance, Nikki Quartuccio, Emily White

Pepperdine Journal of Communication Research

This speech was presented at the EU Delegation to the United States’ 2026 Schuman Challenge. The Schuman Challenge is an academic competition for U.S. undergraduate students to debate transatlantic issues, judged by a panel of stakeholders. The prompt for this speech was to create a policy that analyzes a current issue area in the E.U.-U.S. transatlantic relationship and suggests ways to strengthen it in the years ahead. Our policy, POLAR, the Partnership for Observation, Leadership, and Arctic Resilience, establishes a neutral, AI-enabled early-warning and consultation mechanism hosted within the International Maritime Organization (IMO). By institutionalizing shared situational awareness, structured clarification …

How Additive Manufacturing Is Changing The Automotive Industry, Gavin B. Schumacher

Honors Theses

No abstract provided.

From Burnout To Resilience: Evidence-Based Strategies To Promote Nurse Well-Being, Rachell Nguyen

Creating Healthy Work Environments (CHWE)

Purpose: To review and translate evidence-based interventions into practical strategies for promoting mental health, preventing burnout, and fostering resilience among nurses.

Background: Nurses are experiencing unprecedented challenges to mental health and well-being, calling for the systematic adoption of research-supported interventions to maintain the workforce and improve patient care outcomes.

Methods: A comprehensive review of evidence-based interventions was conducted across individual, interpersonal, and organizational levels, focusing on promoting nurses' mental health, preventing burnout, and building resilience.

Findings: Mental health promotion has strong empirical backing through mindfulness-based interventions, as shown by systematic reviews that consistently report reductions in stress and anxiety. Peer …

Caregiving For Older Adults: How The Child And Dependent Care Credit Could Help, Gabrielle Pepin, Yulya Truskinovsky

Upjohn Institute Policy and Research Briefs

No abstract provided.