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Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 326-333 doi: 10.1007/s11708-017-0489-z

Abstract: In this paper, a novel accelerated test method was proposed to analyze the durability of MEA, consideringThis paper may provide a new research direction for improving the durability of fuel cell.

Keywords： polymer electrolyte membrane fuel cell     accelerated life-time test     load cycling test     durability    

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Experimental investigation on freeze−thaw durability of polymer concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1038-1046 doi: 10.1007/s11709-021-0748-2

Abstract: Assessing the durability of concrete is of prime importance to provide an adequate service life and reduceFreeze–thaw is one such test that indicates the ability of concrete to last a long time without a significantconcrete (PC) specimens prepared with higher dosages of polymer contents possessed better freeze–thaw durabilityThis high durability performance of PCs is mainly due to their impermeable microstructures, absence of

Keywords： durability test     freeze-thaw resistance     polymer concrete     residual compressive strength     ASTM C666-15    

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Laboratory assessment of Alaska aggregates using Micro-Deval test

Jenny LIU,Sheng ZHAO,Anthony MULLIN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 27-34 doi: 10.1007/s11709-016-0359-5

Abstract: Aggregates suitable for use in asphalt concrete (AC) pavement construction must meet durability criteriaThus, it is critical to select appropriate tests to properly characterize aggregate durability.In Alaska, durability tests currently being used for aggregates in AC pavement include Los Angeles (LA) abrasion test, sulfate soundness test and Washington degradation test.Based on the testing results, it is found that using Micro-Deval test for durability assessment of Alaska

Keywords： aggregate durability     Washington degradation test     Micro-Deval test    

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Environmental Simulation Test Technology of Modern Concrete Structures

Li Yunfeng,Wu Shengxing

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 81-85

Abstract:

In order to study durability, crack controlling of concrete structures and characteristics of concreteat early age in simulated environment, environmental simulation test technology is discussed.The key techniques of environmental test of concrete structures are analyzed.Based on the research, environmental test of concrete durability and crack controlling will be better

Keywords： concrete structure     environmental test     durability     crack controlling     artificial climate    

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Influence of initial curing conditions and exposure environments on chloride migration in concrete using electrochemical method

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 348-353 doi: 10.1007/s11709-010-0077-3

Abstract: ions passing through the specimen’s section was monitored in the accelerated chloride migration testof the initial curing condition and following exposure environment should be taken into account in durability

Keywords： durability     effective diffusion coefficient     steady-state     migration test    

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A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 325-338 doi: 10.1007/s11708-019-0618-y

Abstract: Though it has found its applications in numerous fields, the cost and durability are key barriers impedingand functional properties of various materials involved in the GDE can help us to address the related durabilityThis paper reviews the key GDE components, and in specific, the root causes influencing the durabilityalso envisages the role of novel materials and provides a critical recommendation to improve the GDE durability

Keywords： PEM fuel cell     gas diffusion electrode(GDE)     gas diffusion layer(GDL)     membrane electrode assembly     durability    

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Cement mortar with enhanced flexural strength and durability-related properties using

Qing LIU, Renjun LIU, Qiao WANG, Rui LIANG, Zongjin LI, Guoxing SUN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 99-108 doi: 10.1007/s11709-021-0721-0

Abstract: micro-and-pore structures, hydrated products, interactions between cement hydrates and polyacrylamide (PAM), and durability-related

Keywords： acrylamide     in situ polymerization     interaction     porosity     durability    

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additives and permeability reducing admixtures having different action mechanisms on mechanical and durability

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1277-1291 doi: 10.1007/s11709-021-1752-2

Abstract: In this paper, the effect of usage of the permeability reducing admixture (PRA) having different action mechanisms on hardened state properties of cementitious systems containing mineral additives is examined. For this aim, three commercial PRAs were used during investigation. The effective parameters in the first and third PRAs were air-entraining and high-rate air-entraining, respectively. The second one contained the insoluble calcium carbonate residue and had a small amount of the air-entraining property. Mortar mixes with binary and ternary cementitious systems were prepared by partially replacing cement with fly ash and metakaolin. The hardened state properties of mortar mixtures such as compressive strength, ultrasonic pulse velocity, water absorption, drying shrinkage and freeze–thaw resistance were investigated. The ternary cement-based mixture having both fly ash and metakaolin was selected as the most successful mineral-additive bearing mix in regard to hardened state properties. In this sense, PRA-B, with both insoluble residues and a small amount of air-entraining properties, showed the best performance among the mixtures containing PRA. The combined use of mineral additive and PRA had a more positive effect on the properties of the mixes.

Keywords： cementitious system     mineral additive     permeability reducing admixture     mechanical properties     durability    

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Supporting structure durability analysis of Bohai Strait tunnel

Wu Yongsheng,Wan Fei,Tan Zhongsheng

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 67-72

Abstract:

Through the analysis of factors affecting the durability of the tunnelstructure,and according to the relevant engineering test results and the experience of design and constructiontechnology, improving measures of the primary support and secondary lining durability of Bohai StraitThe durability design parameters of successfully built tunnel were analyzed.actual situation of the Bohai Strait tunnel, the engineering analogy method was adopted to get the durability

Keywords： subsea tunnel     supporting structure     durability     design parameters    

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Durability analysis of B grade steel side-frame based on the PFM method

Li Wei and Wang Ping

Strategic Study of CAE 2011, Volume 13, Issue 1,   Pages 56-61

Abstract:

Based on probabilistic fracture mechanics, the simulated durability test

Keywords： durability     fatigue     B grade steel     crack    

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A new systematic firefly algorithm for forecasting the durability of reinforced recycled aggregate concrete

Wafaa Mohamed SHABAN; Khalid ELBAZ; Mohamed AMIN; Ayat gamal ASHOUR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 329-346 doi: 10.1007/s11709-022-0801-9

Abstract: This study presents a new systematic algorithm to optimize the durability of reinforced recycled aggregate

Keywords： chloride penetrability     recycled aggregate concrete     machine learning     concrete components     durability    

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Long-term durability of onshore coated concrete —chloride ion and carbonation effects

Seyedhamed SADATI,Mehdi K. MORADLLO,Mohammad SHEKARCHI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 2,   Pages 150-161 doi: 10.1007/s11709-016-0341-2

Abstract: Enhancing service life of reinforced concrete (RC) structures located in marine environments is an issue of great interest for design engineers. The present research addresses the effect of surface coatings on service life of onshore RC structures. Long-term performance of concrete samples up to 88 months of exposure at natural marine environment was investigated. Two onshore exposure conditions, including soil and atmosphere and different types of concrete coatings were studied. Carbonation rates of up to 0.5 and 1.5 mm/year were observed at the first 88 months of exposure for soil and atmospheric samples, respectively. Surface chloride ion build-up and variation in chloride ion diffusion were monitored with respect to time, and service life was estimated. Based on the obtained results it is proposed to use the aliphatic acrylic and polyurethane coatings for enhancing the service life of concrete structures in the investigated exposure conditions.

Keywords： carbonation     chloride ion     corrosion     service life     surface coating    

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Enhancing compressive strength and durability of self-compacting concrete modified with controlled-burnt

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 161-174 doi: 10.1007/s11709-021-0796-7

Abstract: Test results showed that the presence of amorphous silica was detected for the processed SBA, revealingRegarding durability, the 10%SBA + 30%BFS mix exhibited the lowest risk of corrosion.

Keywords： sugarcane bagasse ash     self-compacting concrete     compressive strength     sulfate resistance     water absorption     strength formula    

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The Durability of Alkali-Activated Materials in Comparison with Ordinary Portland Cements and Concretes Review

Aiguo Wang, Yi Zheng, Zuhua Zhang, Kaiwei Liu, Yan Li, Liang Shi, Daosheng Sun

Engineering 2020, Volume 6, Issue 6,   Pages 695-706 doi: 10.1016/j.eng.2019.08.019

Abstract: This paper compares the durability of AAMs and OPCbased materials under sulfate attack, acid corrosionDifferent AAMs have shown distinct durability properties due to different compositions being formed whenNevertheless, AAMs show better durability performances than OPC-based materials in general.

Keywords： Alkali-activated materials     Geopolymer     Durability     Ordinary Portland cement     Deterioration mechanism    

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Mechanical performance analysis and stiffness test of a new type of suspension bridge

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1160-1180 doi: 10.1007/s11709-021-0760-6

Abstract: A stiffness test was carried out on the new type of suspension bridge with a small span, and the results

Keywords： new type of suspension bridge     stiffness test     mechanical performance     railway bridge     space truss    

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Title Author Date Type Operation

Accelerated life-time test of MEA durability under vehicle operating conditions in PEM fuel cell

Tian TIAN, Jianjun TANG, Wei GUO, Mu PAN

Journal Article

Experimental investigation on freeze−thaw durability of polymer concrete

Journal Article

Laboratory assessment of Alaska aggregates using Micro-Deval test

Jenny LIU,Sheng ZHAO,Anthony MULLIN

Journal Article

Environmental Simulation Test Technology of Modern Concrete Structures

Li Yunfeng,Wu Shengxing

Journal Article

Influence of initial curing conditions and exposure environments on chloride migration in concrete using electrochemical method

Wen XUE, Weiliang JIN, Hiroshi YOKOTA,

Journal Article

A comprehensive assessment on the durability of gas diffusion electrode materials in PEM fuel cell stack

Arunkumar JAYAKUMAR

Journal Article

Cement mortar with enhanced flexural strength and durability-related properties using

Qing LIU, Renjun LIU, Qiao WANG, Rui LIANG, Zongjin LI, Guoxing SUN

Journal Article

additives and permeability reducing admixtures having different action mechanisms on mechanical and durability

Journal Article

Supporting structure durability analysis of Bohai Strait tunnel

Wu Yongsheng,Wan Fei,Tan Zhongsheng

Journal Article

Durability analysis of B grade steel side-frame based on the PFM method

Li Wei and Wang Ping

Journal Article

A new systematic firefly algorithm for forecasting the durability of reinforced recycled aggregate concrete

Wafaa Mohamed SHABAN; Khalid ELBAZ; Mohamed AMIN; Ayat gamal ASHOUR

Journal Article

Long-term durability of onshore coated concrete —chloride ion and carbonation effects

Seyedhamed SADATI,Mehdi K. MORADLLO,Mohammad SHEKARCHI

Journal Article

Enhancing compressive strength and durability of self-compacting concrete modified with controlled-burnt

Journal Article

The Durability of Alkali-Activated Materials in Comparison with Ordinary Portland Cements and Concretes

Aiguo Wang, Yi Zheng, Zuhua Zhang, Kaiwei Liu, Yan Li, Liang Shi, Daosheng Sun

Journal Article

Mechanical performance analysis and stiffness test of a new type of suspension bridge

Journal Article