With the rapid development of bridge construction, service life bridges and traffic volume continue to increase, leading gradual appearance diseases such as potholes cracks in deck pavements under repeated external loads. These issues severely impact safety bridges. The repair is crucial for ensuring integrity structures. Rapid materials designed this purpose play a critical role effectively efficiently addressing these issues. In order address pavement diseases, study focuses on epoxy...

New fog seal material has been developed using emulsified asphalt (EA) modified by composite agents including waterborne epoxy resin (WER), polyurethane (WPU), acrylic (WAR) or cement, to address the shortcomings of conventional in terms poor durability and adhesion. Test results showed that new was uniformly dispersed stable store, with improved pullout strength 2-4 times, a water permeability coefficient close zero slight reduction British Pendulum Number when comparing without fine sand....

The vehicle load on a bridge is critical and dynamic variable. It adversely affects bridges, especially when overloading occurs. Bridges are prone to fatigue damage or collapse. Therefore, identifying the size type of loads bridges for theoretical studies practical applications, such as health monitoring, daily maintenance, safety assessment, traffic planning. paper proposes method parameters based convolutional neural network (CNN) strain data. model implemented in MATLAB. An initial...

Electromagnetic wave pollution has become a significant harm posed to human health and precision instruments. To shelter such instruments from electromagnetic radiation, high-frequency interference (EMI) shielding materials are extremely desirable. The focus of this research is lightweight, high-absorption EMI composites. Simple aqueous dispersion drying procedures were used prepare cotton fiber (CF)-based sheets combined with various zinc oxide (ZnO) contents. These composites carbonated in...

The development of information technology has led to massive, multidimensional, and heterogeneously sourced disaster data. However, there’s currently no universal metadata standard for managing natural disasters. Common pre-training models extraction requiring extensive training data show somewhat limited effectiveness, with annotated resources. This study establishes a unified standard, utilizes self-trained (UIE) Python libraries extract stored in both structured unstructured forms,...

Over the years, field of landslide disaster research has amassed a wealth data and specialized knowledge. However, these resources originate from wide array sources often feature complex structures, highlighting persistent lack methods to integrate multi-source, heterogeneous data. Traditional monitoring typically focus on singular targets sources, which limits comprehensive understanding processes involved in landslides. This paper introduces model based knowledge graph. employs P-Tuning...

In this study, the comprehensive performance of cold mix asphalt (CMA) is evaluated by seven laboratory test methods, namely Hveem cohesion test, water immersion splitting freeze–thaw indirect tensile fatigue semi-circular bending (SCB) dynamic modulus and rutting test. The CMA modified using regenerant (RE), Buton rock (BRA), styrene–butadiene rubber (SBR) latex. addition, we have proposed an evaluation model based on grey target theory to quantitatively assess effects modification...

Emulsified asphalt is widely used as a prime coat in road engineering, especially pavements with cement-stabilized semi-rigid bases. The objective of this paper to develop new emulsified high permeability and pulling-off strength. A type high-permeability was prepared by using 55.2% diluted (44.16% matrix + 11.04% diluent) 40% emulsion (2% emulsifier 0.5% stabilizer 1% osmotic agent op-10 35.5% water) 4.8% aromatic oil. storage stability verified be better, the penetrating rate depth were...

In order to overview and analysis briefly pavement crack recognition methods , then find the current existing problems in image processing, popular of processing such as neural network method, morphology fuzzy logic method traditional .etc. are discussed, some effective solutions those presented.

This paper investigates the potential contribution mechanisms of steel slag fillers in asphalt mastic, covering asphalt-filler interaction mechanisms, microwave heating efficiency, electromagnetic absorption and fatigue durability. The physico-chemical microscopic filler, limestone filler interactions between styrene-butadiene-styrene (SBS)-modified binders were characterized. microwave-heating efficiency slag-based mastic (SBS-SS) limestone-based (SBS-LS) was quantified. dielectric...

Remote sensing precipitation data have the characteristics of wide coverage and revealing spatiotemporal information, but their spatial resolution is low. The accuracy obviously different in study areas hydrometeorological conditions. This evaluated four products Yellow River basin from 2001 to 2019, constructed optimal combined product, conducted downscaling with various machine algorithms, performed corrections using meteorological station analyze trends precipitation. results showed that...

The grouting quality of prestressed pipelines directly affects the safety and durability reinforced concrete bridge structures, attracting wide attention from engineering community. Based on principles scattering wave method, this paper designs manufactures a large-scale model to simulate actual construction testing environment. Several sets design defects with significantly distributed spans in prestressing ducts were pre-set, Engineering Geophysical Instrument System–Pipeline Grouting...

In order to study the stiffness degradation of pre-stressed concrete T-beams throughout their entire service life, full-scale destructive tests were conducted on newly constructed T-beams. The test process characterized relationship between load and deflection at different levels. Meanwhile, equivalent short-term levels calculated based formulas from code, a segmental back-calculation method for T-beam bridges was proposed system identification theory. results show that, during process,...

This paper investigates and analyzes the dynamic response of asphalt pavement under pavement-unevenness excitation based on an orthogonal vector function system efficient DVP (dual variable position) method. Firstly, starting from unevenness vehicle source, is established by using filtered white-noise method, random load model obtained simulation. Then, basic governing equation road-surface problem load, analytical solution mechanical The effects grade, speed, interlayer contact condition,...

China’s vulnerability to fluvial floods necessitates extensive exposure studies. Previous large-scale regional analyses often relied on a limited set of assessment indicators due challenges in data acquisition, compounded by the scarcity corresponding flood distribution data. The integration public datasets offers potential solution these challenges. In this study, we obtained four key indicators—population, built-up area (BA), road length (RL), and average gross domestic product (GDP)—and...

As monitoring technologies and data collection methodologies advance, landslide disaster reflects attributes such as diverse sources, heterogeneity, substantial volumes, stringent real-time requirements. To bolster the support capabilities for monitoring, prevention, management of disasters, efficient integration multi-source heterogeneous is paramount importance. The present study proposes an innovative approach to integrate by combining Flink-oriented framework with load balancing task...

The prestress loss of prefabricated continuous beam bridges directly affects their stress state and operating conditions. Excessive can lead to increased mid span deflection the main beam, cracking web bottom plates, reduced bearing capacity, even affect safety structure. This study focuses on urban highway overpasses measures bridge deck using drop hammer impact method. test segmental was simulated a finite element model, influence at different positions basin during operation studied....

In this study, a quasi-stumps group structure was proposed and placed upstream of the bridge piers to mitigate scour waterflow on riverbed. Both experiment numerical simulations using FLOW 3D were employed study protective effect structure. The results in good agreement with experimental findings. It found that can effectively reduce flow velocities around piers, thereby promoting deposition suspended sediment. As result, there no erosion instead, siltation formed, which contributed...

In this paper, three composite agents (i.e. emulsified asphalt, EA; styrene butadiene rubber, SBR; rubber powder, RP) were employed to modify the cement stabilized macadam (CSM) for optimal design of semi-rigid base materials. The feasibility utilizing EA/SBR/RP composites in is investigated from perspectives modification mechanism and durability performance. To investigate effects different modifiers on macadam, unconfined compressive strength (UCS), indirect tensile (ITS), resilience...

This study sheds light on the analysis of thermodynamic properties asphalt-aggregate interface under modification low-dimensional carbon nanotubes (CNTs) with styrene-butadiene-styrene (SBS) copolymers through molecular modeling techniques, and mainly addresses following queries: How do asphalt, modifiers, moisture, mineral molecules interact each other? What are regulations energy conversions in systems, especially presence oxidation moisture? does failure pattern bond strength system...

The void phenomenon behind the tunnel lining has become main cause of disease, easily triggering structure damage, shedding, water seepage, and other diseases that seriously threaten normal operation tunnel. area reduces seismic capacity In this paper, mechanical parameters surrounding rock are calculated by optimizing inversion improved system identification sensitivity analysis method, numerical model tunnel’s dynamic response is optimized using results to study repair effect Longmenshan...