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shear strength 9

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cold spraying 2

energy dissipation 2

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fiber-reinforced polymer 2

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Rheological behavior of PMVE-MA aqueous solution with metallic cations

Xiaoping DONG, Li LI, Jun XU, Xuhong GUO

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 126-130 doi: 10.1007/s11705-010-0548-z

Abstract: Sol-gel transition and shear-thickening phenomena at moderate shear rate were observed upon increasingThe shear-thickening behavior depends on , pH, metallic valence, and temperature.

Keywords： poly(methyl vinyl ether-co-maleic anhydride)     shear-thickening     gel point     rheology    

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A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 272-279 doi: 10.1007/s11783-010-0234-x

Abstract: A hybrid membrane process for simultaneous sludge thickening and digestion (MSTD) was studied.The thickening and digestion effects in the MSTD were further analyzed based on a mass balance analysis

Keywords： membrane filtration     sludge digestion     sludge thickening     waste activated sludge    

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Simple model of sludge thickening process in secondary settlers

Yuankai ZHANG,Hongchen WANG,Lu QI,Guohua LIU,Zhijiang HE,Songzhu JIANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 319-326 doi: 10.1007/s11783-014-0758-6

Abstract: Sludge thickening occurs in the lower portions of secondary clarifiers during their operation.In this study, by detecting the hindered zone from the complete thickening process of activated sludgesludge thickening in the hindered zone was developed.zone showed limited thickening.To explore different sludge settling and thickening mechanisms, the curves of sludge thickening and sludge

Keywords： wastewater treatment plants     secondary settler     sludge thickening     sludge settling     hindered zone    

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Enhancement of sludge gravitational thickening with weak ultrasound

Panyue ZHANG, Tian WAN, Guangming ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 753-760 doi: 10.1007/s11783-011-0368-5

Abstract: Gravitational thickening is the prevailing method to reduce sludge volume but the process is slow andThis paper investigated the potential benefits of sonication on enhancing the sludge gravitational thickeningWeak sonication (<680 kJ·kg DS) improved the sludge gravitational thickening while high ultrasonic energyConsidering both the sludge thickening efficiency and energy consumption, the optimum conditions wereWeak sonication could substitute expensive polyelectrolyte coagulant for sludge thickening.

Keywords： activated sludge     sonication     settlability     dry weight     extracellular polymeric substances     polyelectrolyte    

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A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0932-8

Abstract: A full-scale integrated-bioreactor consisting of a suspended zone and an immobilized zone was employed to treat the ordours emitted from a wastewater treatment plant. The inlet concentrations of H S and NH were 1.6–38.6 mg·m and 0.1–6.7 mg·m , respectively, while the steady-state outlet concentrations were reduced to 0–2.8 mg·m for H S and 0–0.5 mg·m for NH . Both H S and NH were eliminated effectively by the integrated bioreactor. The removal efficiencies of H S and NH differed between the two zones. Four species of microorganisms related to the degradation of H S and NH were isolated. The characteristics and distributions of the microbes in the bioreactor depended on the inlet concentration of substrates and the micro-environmental conditions in the individual zones. Product analysis indicated that most of the H S was oxidized into sulfate in the immobilized zone but was dissolved into the liquid phase in the suspended zone. A large amount of NH was converted into nitrate and nitrite by nitration in the suspended zone, whereas only a small amount of NH was transferred to the aqueous phase mainly by absorption or chemical neutralization in the immobilized zone. Different microbial populations dominated the individual zones, and the major biodegradation products varied accordingly.

Keywords： Biological deodorization     Microbial characteristics     Ammonia     Hydrogen sulfide     Wastewater treatment plant    

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Modeling of shear walls using finite shear connector elements based on continuum plasticity

Ulf Arne GIRHAMMAR, Per Johan GUSTAFSSON, Bo KÄLLSNER

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 143-157 doi: 10.1007/s11709-016-0377-3

Abstract: behavior of the sheathing-to-framing joints has a significant impact on the structural performance of shearThis paper is focused on the finite element modeling of shear walls.The purpose is to present a new shear connector element based on the theory of continuum plasticity.Load-displacement curves for shear walls are calculated using the shear connector model and they are

Keywords： shear walls     wall diaphragms     finite element modelling     plastic shear connector     analytical modelling     experimental    

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Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 331-356 doi: 10.1007/s11709-019-0596-5

Abstract: paper examines the structural response of reinforced concrete flat slabs, provided with fully-embedded shear-headsassessments enable the identification of three modes of failure as a function of the interaction between the shear-headPractical recommendations are also provided for the design of shear-heads in RC slabs, including theshown to offer a more reliable design approach in comparison with existing methods for all types of shear-heads

Keywords： non-linear numerical modelling     concrete damage plasticity     RC flat slabs     shear-heads     punching shear    

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Behaviour of self-centring shear walls——A state of the art review

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 53-77 doi: 10.1007/s11709-022-0850-0

Abstract: post-tensioning (PT) in structural walls has led to the development of advanced self-centring (rocking) shearextensive research since the 1980s, there are no well-established design guidelines available on the shearsliding, confinement, seismic performance factors, PT loss, PT force range and residual drifts of shearThe established database was then used to review shear walls’ configurations, material, and componentsThe behaviour of concrete, masonry and timber shear walls were compared and critically analysed.

Keywords： self-centring shear walls     rocking walls     energy dissipation     seismic performance factors     PT loss     residual    

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic

Keywords： horizontal stress index     shear wave velocity     flat dilatometer test     cone penetration test    

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On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 396-410 doi: 10.1007/s11709-023-0934-5

Abstract: system consisting of a combination of braces and steel infill panels called the braced corrugated steel shearSubsequently, a relationship was established to estimate the buckling shear strength of the system withoutThe results obtained from the parametric study indicate that the corrugated steel shear panel (CSSP)

Keywords： trapezoidal corrugated plate     steel shear panel     braced steel shear panel     experimental study     buckling    

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Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 325-336 doi: 10.1007/s11709-014-0080-1

Abstract: In determining the shear capacity of reinforced concrete beams, current codes do not provide any calculationThe primary design variables are the shear-span-depth ratio, different reinforcement ratio of stirrupsIt was found that web horizontal reinforcement can increase the shear capacity of the beams and restrainTest results are very valuable, as very few references of shear tests can be found focusing on the effectof web horizontal reinforcement on the shear capacity of the beams.

Keywords： reinforced concrete beam     shear strength     web horizontal reinforcement     experiments    

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated.

Keywords： Mechanically and biologically treated waste     Landfill     Triaxial test     Loading rate     Axial strain     Shear    

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Micromixing performance of the teethed high shear mixer under semi-batch operation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 546-559 doi: 10.1007/s11705-021-2069-3

Abstract: Herein the structural and operating parameters of the teethed high shear mixers were adjusted to studythat the rising of the rotor speed and the number of rotor teeth, the decrease of the width of the shearevolution of the flow pattern and turbulent energy dissipation rate of the semi-batch operated high shearwhich can provide valuable guidance on the design and optimization of the semi-batch operated high shear

Keywords： high shear mixer     semi-batch operation     micromixing performance     Villermaux/Dushman system     segregation    

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Predicting the capacity of perfobond rib shear connector using an ANN model and GSA method

Guorui SUN; Jun SHI; Yuang DENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1233-1248 doi: 10.1007/s11709-022-0878-1

Abstract: A connector is an important part of a composite beam, and its shear strength can have a significant impactIn this paper, the shear performance of perfobond rib shear connectors (PRSCs) is predicted based onvariables were based on different empirical formulas and the output variables were the corresponding shearresults predicted by the ANN models and empirical equations were compared, and the factors affecting shearforce between steel plate and concrete has the least sensitivity to shear strength.

Keywords： perfobond rib shear connector     shear strength     ANN model     global sensitivity analysis    

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Uncertainty of concrete strength in shear and flexural behavior of beams using lattice modeling

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 306-325 doi: 10.1007/s11709-022-0890-5

Abstract: studied the effect of uncertainty and random distribution of concrete strength in beams failing in shearComparative studies were conducted for both shear- and flexure-deficit beams under four-point loadingThe scatter of random load-capacities was higher in flexure (range: 0.680–0.990) than that of shear (

Keywords： lattice modeling     shear failure     flexural failure     uncertainty     deficiency     numerical simulation    

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Title Author Date Type Operation

Rheological behavior of PMVE-MA aqueous solution with metallic cations

Xiaoping DONG, Li LI, Jun XU, Xuhong GUO

Journal Article

A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

Journal Article

Simple model of sludge thickening process in secondary settlers

Yuankai ZHANG,Hongchen WANG,Lu QI,Guohua LIU,Zhijiang HE,Songzhu JIANG

Journal Article

Enhancement of sludge gravitational thickening with weak ultrasound

Panyue ZHANG, Tian WAN, Guangming ZHANG

Journal Article

A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

Journal Article

Modeling of shear walls using finite shear connector elements based on continuum plasticity

Ulf Arne GIRHAMMAR, Per Johan GUSTAFSSON, Bo KÄLLSNER

Journal Article

Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

Journal Article

Behaviour of self-centring shear walls——A state of the art review

Journal Article

Prediction of the shear wave velocity

Amoroso SARA

Journal Article

On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Journal Article

Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

Micromixing performance of the teethed high shear mixer under semi-batch operation

Journal Article

Predicting the capacity of perfobond rib shear connector using an ANN model and GSA method

Guorui SUN; Jun SHI; Yuang DENG

Journal Article

Uncertainty of concrete strength in shear and flexural behavior of beams using lattice modeling

Journal Article