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Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane cracking

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 780-789 doi: 10.1007/s11705-018-1733-8

Abstract: The effect of the crystal size on the catalytic cracking of -heptane was investigated and the Thielemodulus and effectiveness factor were used to determine the reaction rate-limiting step.

Keywords： hierarchical ZSM-5     crystal size     catalytic cracking     Thiele modulus     effectiveness factor    

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Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 38-48 doi: 10.1007/s11709-018-0479-1

Abstract: Modulus of Elasticity (MOE) is a key parameter in reinforced concrete design.

Keywords： modulus of elasticity     normal strength normal weight concrete     empirical models     design codes     compressive    

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Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 294-300 doi: 10.1007/s11465-015-0351-0

Abstract:

The elastic modulus of a deposit (Ed) can be obtained by monitoring the temperature

Keywords： in-plane     Young’s modulus     curvature temperature     thermal stress     coating    

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An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1653-1653 doi: 10.1007/s11709-019-0578-7

Abstract: However, the E-modulus and strength of such members at high service temperatures is still unknown.Modulus and strength of FRP at high service temperatures are highly required parameters for full designThus, this paper proposes design methods for calculating the E-modulus and strength of FRP members atIt was found that the proposed design methods conservatively estimate the E-modulus and strength of FRP

Keywords： concrete     fiber reinforced polymer     E-modulus     strength     temperatures    

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Prediction of falling weight deflectometer parameters using hybrid model of genetic algorithm and adaptive neuro-fuzzy inference system

Frontiers of Structural and Civil Engineering   Pages 812-826 doi: 10.1007/s11709-023-0940-7

Abstract: used in civil engineering to measure and evaluate the physical properties of pavements, such as the modulusof the subgrade reaction (Y1) and the elastic modulus of the slab (Y2), which are crucial for assessing

Keywords： falling weight deflectometer     modulus of subgrade reaction     elastic modulus     metaheuristic algorithms    

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An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1654-1654 doi: 10.1007/s11709-020-0622-7

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Simulation of viscoelastic behavior of defected rock by using numerical manifold method

Feng REN, Lifeng FAN, Guowei MA

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 199-207 doi: 10.1007/s11709-011-0102-1

Abstract: Numerical simulations of longitudinal wave propagation in a rock bar with microcracks are conducted by using the numerical manifold method which has great advantages in the simulation of discontinuities. Firstly, validation of the numerical manifold method is carried out by simulations of a longitudinal stress wave propagating through intact and cracked rock bars. The behavior of the stress wave traveling in a one-dimensional rock bar with randomly distributed microcracks is subsequently studied. It is revealed that the highly defected rock bar has significant viscoelasticity to the stress wave propagation. Wave attenuation as well as time delay is affected by the length, quantity, specific stiffness of the distributed microcracks as well as the incident stress wave frequency. The storage and loss moduli of the defected rock are also affected by the microcrack properties; however, they are independent of incident stress wave frequency.

Keywords： stress wave propagation     defected rock     numerical manifold method     viscoelastic behavior     storage modulus     loss modulus    

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Predicting resilient modulus of recycled concrete and clay masonry blends for pavement applications using

Mosbeh R. KALOOP, Alaa R. GABR, Sherif M. EL-BADAWY, Ali ARISHA, Sayed SHWALLY, Jong WAN HU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1379-1392 doi: 10.1007/s11709-019-0562-2

Abstract: few researchers employed the Least Square Support Vector Machine (LSSVM) in predicting the resilient modulus

Keywords： Least Square Support Vector Machine     Artificial Neural Network     resilient modulus     Recycled Concrete Aggregate    

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Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 487-500 doi: 10.1007/s11709-020-0609-4

Abstract: performance of the artificial neural network (ANN) approach for predicting interlayer conditions and layer modulustwo ANN based back-calculation models were proposed to predict the interlayer conditions and layer modulusthat the proposed back-calculation model developed with ANN could be used to accurately predict layer modulus

Keywords： asphalt pavement     interlayer conditions     finite element method     artificial neural network     back-calculation    

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The stress relaxation of cement clinkers under high temperature

Xiufang WANG,Yiwang BAO,Xiaogen LIU,Yan QIU

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 413-417 doi: 10.1007/s11465-015-0357-7

Abstract: The effects of high temperature on the load-displacement curve, compressive strength, and elastic modulusThe elastic modulus and compressive strength of cement clinkers increase with a decrease in temperatureThe elastic modulus increases greatly when the temperature is lower than 1000 °C.

Keywords： stress relaxation     high temperature     cement clinker     compression     elastic modulus    

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Linear viscoelastic behavior of asphalt binders and mixtures containing very high percentages of reclaimed asphalt pavement

Frontiers of Structural and Civil Engineering   Pages 1211-1227 doi: 10.1007/s11709-023-0983-9

Abstract: Complex modulus test was then performed from −35 to +35 °C and 0.01–10 Hz.PG) testing, extracted and recovered binders from different asphalt mixtures underwent shear complex modulusCole−Cole, Black space, complex modulus and phase angle master curves were constructed and Shift-Homothety-Shift

Keywords： RAP     complex modulus     SHStS transformation     rejuvenation     behavior of asphalt binder and mixture    

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Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 270-281 doi: 10.1007/s11709-014-0265-7

Abstract: , air content, unit weight, compressive strength, flexural strength, splitting tensile strength and modulusreduction factors (RFs) for compressive strength, flexural strength, splitting tensile strength and modulus

Keywords： crumb rubber     recycled tire     mix design     reduction factor     strength     modulus elasticity    

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Bridging the gap between laboratory and field moduli of asphalt layer for pavement design and assessment: A comprehensive loading frequency-based approach

Huailei CHENG; Liping LIU; Lijun SUN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 267-280 doi: 10.1007/s11709-022-0811-7

Abstract: In asphalt pavement design and condition assessment, the modulus of the asphalt mixture layer is a crucial

Keywords： asphalt mixture layer     stiffness modulus     loading mode     UC/4PB/IDT     FWD     frequency    

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Assessment and prediction of the mechanical properties of ternary geopolymer concrete

Jinliang LIU; Wei ZHAO; Xincheng SU; Xuefeng XIE

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1436-1452 doi: 10.1007/s11709-022-0889-y

Abstract: The effects of alkali content (AC) and alkaline activator modulus (AAM) on the compressive strength,flexural tensile strength and elastic modulus of TGC were tested and the SEM micrographs were investigatedstrength of TGC was 27.7% higher than that of OPC at the same compressive strength, while the elastic moduluswith the R2 of 0.945 and 0.987 for predicting flexural tensile strength and elastic modulus

Keywords： Ternary Geopolymer Concrete (TGC)     alkaline activator modulus     alkali content     mechanical properties    

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Effect of carbon black on the dynamic moduli of asphalt mixtures and its master curves

Chuangmin LI, Fanbo NING, Yuanyuan LI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 918-925 doi: 10.1007/s11709-019-0526-6

Abstract: Modulus is one of the main parameters during the design of asphalt pavement structure, the newest specificationsThen, the uniaxial compression dynamic modulus tests were conducted at different temperatures and loadingIn addition, CB and SBS can obviously improve the dynamic modulus of the BA mixture, enhance the anti-deformation

Keywords： dynamic modulus     carbon black     master curve     modified asphalt     asphalt mixture    

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Title Author Date Type Operation

Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane cracking

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Journal Article

Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes

Daniel GAONA,Alfredo VALAREZO

Journal Article

An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Journal Article

Prediction of falling weight deflectometer parameters using hybrid model of genetic algorithm and adaptive neuro-fuzzy inference system

Journal Article

An improved design method to predict the E-modulus and strength of FRP composites at different temperatures

Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA

Journal Article

Simulation of viscoelastic behavior of defected rock by using numerical manifold method

Feng REN, Lifeng FAN, Guowei MA

Journal Article

Predicting resilient modulus of recycled concrete and clay masonry blends for pavement applications using

Mosbeh R. KALOOP, Alaa R. GABR, Sherif M. EL-BADAWY, Ali ARISHA, Sayed SHWALLY, Jong WAN HU

Journal Article

Assessing artificial neural network performance for predicting interlayer conditions and layer modulus

Lingyun YOU, Kezhen YAN, Nengyuan LIU

Journal Article

The stress relaxation of cement clinkers under high temperature

Xiufang WANG,Yiwang BAO,Xiaogen LIU,Yan QIU

Journal Article

Linear viscoelastic behavior of asphalt binders and mixtures containing very high percentages of reclaimed asphalt pavement

Journal Article

Strength reduction factors for structural rubbercrete

Bashar S. MOHAMMED,N. J. AZMI

Journal Article

Bridging the gap between laboratory and field moduli of asphalt layer for pavement design and assessment: A comprehensive loading frequency-based approach

Huailei CHENG; Liping LIU; Lijun SUN

Journal Article

Assessment and prediction of the mechanical properties of ternary geopolymer concrete

Jinliang LIU; Wei ZHAO; Xincheng SU; Xuefeng XIE

Journal Article

Effect of carbon black on the dynamic moduli of asphalt mixtures and its master curves

Chuangmin LI, Fanbo NING, Yuanyuan LI

Journal Article