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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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Isolation, identification and primary application of bacteria from putrid alkaline silica sol

Lijie REN,Ye HAN,Shuwen YANG,Xiqian TAN,Jin WANG,Xin ZHAO,Jie FAN,Ting DONG,Zhijiang ZHOU

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 330-339 doi: 10.1007/s11705-014-1419-9

Abstract: The putrefaction of alkaline silica sol was investigated in this paper.The total colony numbers in three alkaline silica sol samples were 1.47×10 , 1.25×10 , and 9.45×10 cfuTo explore the possibility of isolates in industrial application, their alkaline protease and amylaseFive strains produced alkaline protease, whereas two strains produced alkaline amylase.Thus, understanding of the putrefaction on alkaline silica sol would be beneficial for improving industrial

Keywords： putrid alkaline silica sol     alkaliphile     isolation and identification     sterilization     alkaline protease andalkaline amylase    

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The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1486-1499 doi: 10.1007/s11709-022-0881-6

Abstract: In addition, an alkali activator solution was used as a binder in the mixtures.The alkaline activator solution was obtained by mixing sodium hydroxide solution (6, 8, 10, and 12 mol

Keywords： expanded perlite     alkali activator     thermal insulation panel     thermal conductivity    

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Chemotactic effect of urokinase-type plasminogen activator on mouse spermatozoa

DING Xiaofang, LI Honggang, XIONG Chengliang

Frontiers of Medicine 2008, Volume 2, Issue 2,   Pages 195-199 doi: 10.1007/s11684-008-0037-7

Abstract: The aim of this study is to investigate the chemotactic effect of urokinase-type plasminogen activator

Keywords： chemotactic activity     receptor     uPA inhibitor     F10     chemoattractant    

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Alkaline modification of ZSM-5 catalysts for methanol aromatization: The effect of the alkaline concentration

Zhenhao Wei,Tengfei Xia,Minghui Liu,Qingsheng Cao,Yarong Xu,Kake Zhu,Xuedong Zhu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 450-460 doi: 10.1007/s11705-015-1542-2

Abstract: The effects of alkaline treatment on the physical properties of ZSM-5 catalysts and on their activitiesA mild alkaline treatment (0.2 and 0.3 mol/L NaOH) created mesopores in the parent zeolite with no obviousIn addition, more mesopores were produced than with the mild alkaline treatment.Treatment with a higher alkaline concentration (0.5 mol/L) greatly reduced the number of Brønsted acidWhen the alkaline-treated catalysts were washed with acid, some of the porosity was restored and a slight

Keywords： aromatics     ZSM-5     alkaline treatment     dealumination     desilication     mesopores     methanol    

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Fabrication of high-performance pervaporation composite membrane for alkaline wastewater reclamation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 709-719 doi: 10.1007/s11705-021-2078-2

Abstract: The merit can be applied to treat alkaline wastewater if the membrane has superior alkali-resistance.

Keywords： pervaporation     alkaline solution concentration     polyethylene membrane     acid resistance     chlorine tolerance    

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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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A “Seawater-in-Sludge” approach for capacitive biochar production via the alkaline and alkaline earth

Xiling Li, Tianwei Hao, Yuxin Tang, Guanghao Chen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1295-0

Abstract: Abstract • Capacitive biochar was produced from sewage sludge. • Seawater was proved to be an alternative activation agent. • Minerals vaporization increased the surface area of biochar. • Molten salts acted as natural templates for the development of porous structure. Sewage sludge is a potential precursor for biochar production, but its effective utilization involves costly activation steps. To modify biochar properties while ensuring cost-effectiveness, we examined the feasibility of using seawater as an agent to activate biochar produced from sewage sludge. In our proof-of-concept study, seawater was proven to be an effective activation agent for biochar production, achieving a surface area of 480.3 m2/g with hierarchical porosity distribution. Benefited from our design, the catalytic effect of seawater increased not only the surface area but also the graphitization degree of biochar when comparing the pyrolysis of sewage sludge without seawater. This leads to seawater activated biochar electrodes with lower resistance, higher capacitance of 113.9 F/g comparing with control groups without seawater. Leveraging the global increase in the salinity of groundwater, especially in coastal areas, these findings provide an opportunity for recovering a valuable carbon resource from sludge.

Keywords： Sewage sludge     Biochar     Seawater     Recourse recovery     Capacitor    

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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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Stability analysis of alkaline nitrobenzene-containing wastewater by a catalyzed Fe-Cu treatment process

FAN Jinhong, XU Wenying, GAO Tingyao, MA Luming

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 504-508 doi: 10.1007/s11783-007-0081-6

Abstract: Iron and copper bimetallic system (catalyzed Fe-Cu process) is a promising technology for alkaline nitrobenzene-containing

Keywords： technology     bimetallic     catalyzed     nitrobenzene-containing wastewater     efficiency    

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HQ in inland saline-alkaline water under different light qualities

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1479-2

Abstract:

• Optimal growth of Chlorella in inland saline-alkaline water

Keywords： Light quality     Chlorella     Inland saline-alkaline water     Fatty acid     Biodiesel property    

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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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Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 154-161 doi: 10.1007/s11705-013-1331-8

Abstract: The novel composite separators composed of polysulfone and zirconia were prepared by phase inversion precipitation technique. This technique allows pre-evaporation time and extraction temperature to be varied in order to obtain optimal performances of the separators. In order to evaluate practical applicability of those composite separators, a small-scale electrolysis experimental apparatus was used to investigate the changes of cell voltage, gas purity and separator stability. The results revealed a decreased cell voltage compared to the conventional asbestos separators, and the gas purity and separator stability met the requirements for industrial use.

Keywords： phase inversion     separator     alkaline water electrolysis     mechanical and chemical stability    

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Dealumination and desilication for Al-rich HZSM-5 zeolite via steam-alkaline treatment and its application

Yuehua Fang, Fan Yang, Xuan He, Xuedong Zhu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 543-553 doi: 10.1007/s11705-018-1778-8

Abstract: HZSM-5 with high specific surface area and much mesoporosity was obtained by the subsequent alkalineThe regulation of acid quantity was achieved by altering the concentration of alkaline.and desilication of Al-rich HZSM-5 zeolites became more effective using a combination of steam and alkalinetreatments than using alkaline treatment alone.

Keywords： steam treatment     alkaline treatment     hierarchical ZSM-5     methanol aromatization    

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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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Title Author Date Type Operation

Assessment and prediction of the mechanical properties of ternary geopolymer concrete

Jinliang LIU; Wei ZHAO; Xincheng SU; Xuefeng XIE

Journal Article

Isolation, identification and primary application of bacteria from putrid alkaline silica sol

Lijie REN,Ye HAN,Shuwen YANG,Xiqian TAN,Jin WANG,Xin ZHAO,Jie FAN,Ting DONG,Zhijiang ZHOU

Journal Article

The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Journal Article

Chemotactic effect of urokinase-type plasminogen activator on mouse spermatozoa

DING Xiaofang, LI Honggang, XIONG Chengliang

Journal Article

Alkaline modification of ZSM-5 catalysts for methanol aromatization: The effect of the alkaline concentration

Zhenhao Wei,Tengfei Xia,Minghui Liu,Qingsheng Cao,Yarong Xu,Kake Zhu,Xuedong Zhu

Journal Article

Fabrication of high-performance pervaporation composite membrane for alkaline wastewater reclamation

Journal Article

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

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

A “Seawater-in-Sludge” approach for capacitive biochar production via the alkaline and alkaline earth

Xiling Li, Tianwei Hao, Yuxin Tang, Guanghao Chen

Journal Article

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

Daniel GAONA,Alfredo VALAREZO

Journal Article

Stability analysis of alkaline nitrobenzene-containing wastewater by a catalyzed Fe-Cu treatment process

FAN Jinhong, XU Wenying, GAO Tingyao, MA Luming

Journal Article

HQ in inland saline-alkaline water under different light qualities

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

Polysulfone and zirconia composite separators for alkaline water electrolysis

Li XU, Wei LI, Yan YOU, Shaoxing ZHANG, Yingchun ZHAO

Journal Article

Dealumination and desilication for Al-rich HZSM-5 zeolite via steam-alkaline treatment and its application

Yuehua Fang, Fan Yang, Xuan He, Xuedong Zhu

Journal Article

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

Journal Article