Search Results - "Xi, Yunping"

Theoretical Modeling of the Effects of Neutron Irradiation on Properties of Concrete by Jing, Yuxiang, Xi, Yunping

“…AbstractTo ensure safe operation of nuclear power plants (NPPs) during their extended service life, comprehensive investigation of the behavior of concrete…”
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Parallel Finite Element Model for Multispecies Transport in Nonsaturated Concrete Structures by Na, Okpin, Xi, Yunping

“…The chloride-induced corrosion of steel reinforcement embedded in concrete is undoubtedly one of the most important durability problems of reinforced concrete…”
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Characterization of effective moisture diffusivity based on pore structure of concrete by Dehwah, Osamah H. A., Hamidane, H’mida, Xi, Yunping

“…Concrete durability is greatly influenced by the transport rate of aggressive chemicals. Moisture diffusion plays a key role in the long-term performance of…”
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The Effect of Temperature on Moisture Transport in Concrete by Wang, Yao, Xi, Yunping

“…Most concrete structures and buildings are under temperature and moisture variations simultaneously. Thus, the moisture transport in concrete is driven by the…”
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Numerical Modeling of the Injection of Nanoparticles in Saturated Cementitious Material by Electromigration by Li, Linfei, Abdelrahman, Mohamed, Hubler, Mija H, Xi, Yunping

“…AbstractThis paper presents numerical modeling of nanoparticles injected into cementitious material using the electromigration method. In order to remediate…”
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A multiscale model for modulus of elasticity of concrete at high temperatures by Lee, Jaesung, Xi, Yunping, Willam, Kaspar, Jung, Younghan

“…In this paper, the thermal degradation of modulus of elasticity of concrete is modeled by composite mechanics at three scales of observation: (a) at the level…”
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Compressive Strength, Chloride Permeability, and Freeze-Thaw Resistance of MWNT Concretes under Different Chemical Treatments by Xi, Yunping, Wang, Yao, Rhee, Inkyu, Wang, Xingang

“…This study investigated compressive strength, chloride penetration, and freeze-thaw resistance of multiwalled carbon nanotube (MWNT) concrete. More than 100…”
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Hardening mechanisms of an alkaline-activated class F fly ash by Xie, Zhaohui, Xi, Yunping

“…The hardening mechanism of a paste composed of a low calcium fly ash and alkali was investigated. It was found that a fraction of fly ash reacted with…”
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Chloride Penetration in Nonsaturated Concrete by Ababneh, Ayman, Benboudjema, Farid, Xi, Yunping

“…The two governing equations that describe the diffusion of chloride ions into nonsaturated concrete are established. Material models for the four material…”
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Integrated Framework for Quantifying and Predicting Weather-Related Highway Construction Delays by Apipattanavis, Somkiat, Sabol, Kevin, Molenaar, Keith R, Rajagopalan, Balaji, Xi, Yunping, Blackard, Ben, Patil, Shekhar

“…Constant exposure to the environment makes highway construction highly dependent on weather. However, highway construction contracts are often unclear about…”
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A Thermo-Hygro-Coupled Model for Chloride Penetration in Concrete Structures by Damrongwiriyanupap, Nattapong, Xi, Yunping, Limkatanyu, Suchart

“…Corrosion damage due to chloride attack is one of the most concerning issues for long term durability of reinforced concrete structures. By developing the…”
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Analytical Solutions of Ionic Diffusion and Heat Conduction in Multilayered Porous Media by Bai, Yu, Xi, Yunping, Harajli, Ali

“…Ionic diffusion and heat conduction in a multiple layered porous medium have many important engineering applications. One of the examples is the chloride ions…”
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Fiber-reinforced Polymer Bars Under Freeze-Thaw Cycles and Different Loading Rates by Koller, Renèe, Chang, Sunyoung, Xi, Yunping

“…The use of fiber-reinforced polymers (FRP) has increased due to their excellent corrosion resistance, high strength-to-weight-ratio, and stiffness-to-weight…”
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The effect of temperature variation on chloride penetration in concrete by Isteita, Moad, Xi, Yunping

“…•A testing method for concrete under simultaneous chloride and heat transfer was established.•An analytical equation to determine the coupling parameter based…”
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Modeling Chloride Penetration in Saturated Concrete by Xi, Yunping, Ba ant, Zden k P

“…A mathematical model is established for chloride penetration in saturated concrete. The model takes into account various influential parameters such as…”
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Modeling long-term distribution of fast and thermal neutron fluence in degraded concrete biological shielding walls by Jing, Yuxiang, Xi, Yunping

“…•It is very likely that the transport properties of concrete will change during the service life of concrete biological shielding walls.•A two-group neutron…”
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Long-term neutron radiation levels in distressed concrete biological shielding walls by Jing, Yuxiang, Xi, Yunping

“…•Neutron and thermal transport properties of distressed concrete are variable.•Concrete damage due to neutron radiation and elevated temperature is…”
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The effect of w/c ratio and aggregate volume fraction on chloride penetration in non-saturated concrete by Abdelrahman, Mohamed, Xi, Yunping

“…•Experimental study on coupled moisture - chloride diffusion in concrete is presented.•Comparative testing method used to determine the coupling…”
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Multi-scale composite models for the effective thermal conductivity of PCM-concrete by Meshgin, Pania, Xi, Yunping

“…•An analytical model was developed to predict the effective thermal conductivity of concrete with phase change materials.•Multi-phase, multi-scale internal…”
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Damage Theory Based on Composite Mechanics by Xi, Yunping, Eskandari-Ghadi, Morteza, Suwito, Sture, Stein

“…A new theory of composite damage mechanics is developed. A material with damage is considered as a composite comprised of two different phases (called matrix…”
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