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Publications (10)
The seismic vulnerability of Cable-stayed Bridges (CSBs) in high-earthquake intensity areas can be of significant concern to structural safety and resilience. A promising design practice for CSBs depends on decoupling the girder from the girder-pylon connection and involving energy dissipation devices such as fluid viscous damper (FVD) to mitigate...
Owing to the enhanced strength, ductility, and resistance to harsh environments, increasing research attention has been paid to alkali-resistant glass fiber reinforced concrete (ARGFRC). This paper presents ARGFRC experimental studies concerning fiber content on mechanical properties and microstructural characteristics of alkali-resistant glass fib...
The corrosion environment of a steel truss bridge significantly shortens its service life, particularly the chemical pollution in the air. A linear corrosion prediction model is proposed based on Miner's linear cumulative damage concept to solve the difficulty of implementing accelerated corrosion tests. Moreover, an equivalent fatigue test is desi...
The concept of steel sheet glass fiber reinforced polymer (GFRP) composite bar (SSGCB) was put forward. An optimization plan was proposed in the combined form of SSGCB. The composite principle, material selection, and SSGCB preparation technology have been described in detail. Three-dimensional finite element analysis was adopted to perform the com...
Polymers cracking products modified asphalt (PCPMA) pavement is a new warm mixing pavement technology. The permanent deformation properties of three types of PCPMA mixture were studied using repeated load triaxial (RLT) tests at different temperatures and deviator stress levels. The half sine wave intermittent load was adopted to simulate the vehic...
A unique chemically hybridized interfacial epoxy-polyurea matrix (IEPM) has been identified through non-negative matrix factorization (NMF) and characteristics of the glass transition temperature (Tg) controlled by epoxy curing time (tc), epoxy-resin viscosity (ν), and polyurea type (PU). IEPM, if annexed to brittle carbon-fiber reinforced epoxy vi...
A synthesizable Interfacial Epoxy-Polyurea hybridized-Matrix (IEPM), comprised of chemical bonded nanostructures across an interface width ranging between 2 μm to 50 μm, is a candidate for dialing-in molecular vibrational properties and providing high-impact dynamics resistance to conventional Fiber(x)-Reinforced Epoxy (F/E), engendering an x-Hybri...
A Carbon-fiber reinforced Hybrid- Matrix Composite (CHMC) was designed to improve the material damping property in conventional carbon-fiber reinforced epoxy (CF/E) through the interfacial reaction of two reactive polymeric compounds: still-curing epoxy-based phase I with a highly crosslinked morphology and lightly crosslinked still-curing polyurea...
A new Carbon-fiber Interfacial Epoxy-Polyurea Matrix (C-IEPM) composite is investigated as a potential retrofit option for vulnerable girder-to-cap connection-details in coastal highway bridges. IEPM is a reaction of cross-linking epoxy with functional groups of pre-polymerized polyurea, producing an energy-transfer mechanism, inherently absent in...
A new fiber (x) reinforced Dynamic Covalent epoxy-polyurea Interface (x-DC EP I) shows good mechanical energy transferability of impact and vibration forces. The bonding property of x-DC EP I interface, engendered between curing, or reactive, epoxy and dynamic polyurea, is controlled by epoxy curing time ( tc ). The reaction of curing epoxy, where...