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Understanding the behavior of recycled aggregate concrete by using thermogravimetric analysis

Subhasis PRADHAN, Shailendra KUMAR, Sudhirkumar V. BARAI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1561-1572 doi: 10.1007/s11709-020-0640-5

Abstract: A method is proposed to estimate the degree of hydration ( ) from chemically bound water ( ).The chemically bound water at infinite time ( ) of RAC mixes are lower than the respective conventionalThe lower , Ca(OH) bound water, free Ca(OH) content and FT-IR analysis substantiate the use of pozzolanic

Keywords： recycled aggregate concrete     Particle Packing Method     thermogravimetric analysis     chemically bound water    

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Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 120-124 doi: 10.1007/s11783-007-0022-4

Abstract: Results indicated that the elimination of matrix-bound phosphine was accelerated under initial pH 1 orC was the most favorable temperature for the production of matrix-bound phosphine.Oxygen showed little effect on matrix-bound phosphine.Matrix-bound phosphine concentrations in lake sediments were concluded to be dependent on a balance of
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Membrane Fouling Alleviation by Chemically Enhanced Backwashing in Treating Algae-Containing SurfaceWater: From Bench-Scale to Full-Scale Application Article

Xiaobin Tang, Tiecheng Guo, Haiqing Chang, Xiao Yue, Jinlong Wang, Haikuan Yu, Binghan Xie, Xuewu Zhu, Guibai Li, Heng Liang

Engineering 2022, Volume 19, Issue 12,   Pages 40-49 doi: 10.1016/j.eng.2021.01.013

Abstract:

Ultrafiltration (UF) has been increasingly implemented in drinking water treatment plants; howeverIn this study, a simple and practical chemically enhanced backwashing (CEB) process was developed tois proposed as an alternative to control membrane fouling in treating the algae-containing surface water

Keywords： Ultrafiltration     Membrane fouling     Hydraulically irreversible membrane fouling     Chemically enhanced backwashing(CEB)     Algae-containing surface water    

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: The method comprises the following steps: i) determination of the total head, ii) upper bound solutionand the expressions of the seismic active earth thrust and pressure are derived by using the upper bound

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Effect of undercut on the lower bound stability of vertical rock escarpment using finite element and

Shuvankar DAS; Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1040-1055 doi: 10.1007/s11709-022-0841-1

Abstract: Lower bound finite element limit analysis in association with Power Cone Programming (PCP) is applied

Keywords： undercut     vertical escarpment     stability     Hoek-Brown yield criterion     PCP    

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A comparative study of the mechanical properties, fracture behavior, creep, and shrinkage of chemically

Mahdi AREZOUMANDI, Mark EZZELL, Jeffery S VOLZ

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 36-45 doi: 10.1007/s11709-014-0243-0

Abstract: investigation that compares the mechanical properties, fracture behavior, creep, and shrinkage of a chemically-basedfollowed conventional proportioning in terms of aggregate type and content, cement content, air content, water-cementitiuosThe high fluidity was achieved with a polycarboxylate-based high-range water-reducing admixture, while

Keywords： admixture     conventional concrete (CC)     creep     fracture mechanic     mechanical Properties     self-consolidating concrete (SCC)     shrinkage    

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Multi-objective optimization in a finite time thermodynamic method for dish-Stirling by branch and bound

Mohammad Reza NAZEMZADEGAN, Alibakhsh KASAEIAN, Somayeh TOGHYANI, Mohammad Hossein AHMADI, R. SAIDUR, Tingzhen MING

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 649-665 doi: 10.1007/s11708-018-0548-0

Abstract: with post-expression of preferences is used for multi-objective optimizations while the branch and bound

Keywords： dish-Stirling     finite time model     branch and bound algorithm     multi-objective particle swarm optimization    

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Particle-bound polycyclic aromatic hydrocarbons in typical urban of Yunnan-Guizhou Plateau: Characterization

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1535-6

Abstract:

• The sampling was conducted in city on the Yunnan-Guizhou Plateau for one year.

Keywords： Particle-associated PAHs     Fine particle     Source appointment     Group analysis     Risk assessment     Biomass burning    

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Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0035-5

Abstract: Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Keywords： finite element power     stability rock escarpment    

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Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 537-551 doi: 10.1007/s11709-021-0708-x

Abstract: effectiveness of under-reamed piles in soft clay underlaid by stiff clay is numerically studied using the lower-bound

Keywords： bearing capacity     uplift capacity     under-reamed pile     clay     limit analysis    

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Chemically triggered life control of “smart” hydrogels through click and declick reactions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1399-1406 doi: 10.1007/s11705-022-2149-z

Abstract: The materials above exhibited high water-swelling properties, distributed porous structures, as well

Keywords： hydrogels     degradation     synthesis     regeneration    

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The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

Strategic Study of CAE 2010, Volume 12, Issue 8,   Pages 56-69

Abstract:

The slip line field theory and the upper bound method based on the associatedIn this paper some problems existing in the slip line field theory and the upper bound method based onThe slip line field theory and the upper bound method based on the non-associated flow rule were deducedplastic theory , which eliminated some inconsistencies in the slip line field theory and the upper bound

Keywords： slip line field     upper bound method     associated flow rule     non-associated flow rule     generalized plastic    

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Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 385-391 doi: 10.1007/s11705-011-1101-4

Abstract: This paper presents the distribution of a solute undergoing a first order chemical reaction in an axisymmetric laminar boundary layer flow along a stretching cylinder. Velocity slip condition at the boundary is used instead of no-slip condition. Similarity transformations are used to convert the partial differential equations corresponding to momentum and concentration into highly nonlinear ordinary differential equations. Numerical solutions of these equations are obtained by the shooting method. The velocity decreases with increasing slip parameter. The skin friction as well as the mass transfer rate at the surface is larger for a cylinder than for a flat plate.

Keywords： boundary layer     stretching cylinder     partial slip     mass transfer     similarity solution    

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Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 519-530 doi: 10.1007/s11783-013-0610-4

Abstract: Chemically enhanced primary process (CEPP) had no effect on removal of either NDMA or NDMA FP.

Keywords： N-nitrosodimethylamine     NDMA precursors     NDMA formation potential     biological treatment process     chemically    

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Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification in wastewater treatment: Comparison of sludge types

Lin Lin, Ying-yu Li, Xiao-yan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1043-x

Abstract:

CEPS sludge was compared with conventional primary and secondary sludge for the VFAs yield.

Fe-based CEPS sludge exhibited the highest efficiency of organic recovery.

Fermented CEPS sludge liquor provided a sufficient carbon source for denitrification.

99% of nitrate removal was achieved based on the Fe-CEPS and sludge fermentation.

Keywords： Sewage sludge     Chemically enhanced primary sedimentation (CEPS)     Acidogenic fermentation     Organic carbon    

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Title Author Date Type Operation

Understanding the behavior of recycled aggregate concrete by using thermogravimetric analysis

Subhasis PRADHAN, Shailendra KUMAR, Sudhirkumar V. BARAI

Journal Article

Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Journal Article

Membrane Fouling Alleviation by Chemically Enhanced Backwashing in Treating Algae-Containing SurfaceWater: From Bench-Scale to Full-Scale Application

Xiaobin Tang, Tiecheng Guo, Haiqing Chang, Xiao Yue, Jinlong Wang, Haikuan Yu, Binghan Xie, Xuewu Zhu, Guibai Li, Heng Liang

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

Effect of undercut on the lower bound stability of vertical rock escarpment using finite element and

Shuvankar DAS; Debarghya CHAKRABORTY

Journal Article

A comparative study of the mechanical properties, fracture behavior, creep, and shrinkage of chemically

Mahdi AREZOUMANDI, Mark EZZELL, Jeffery S VOLZ

Journal Article

Multi-objective optimization in a finite time thermodynamic method for dish-Stirling by branch and bound

Mohammad Reza NAZEMZADEGAN, Alibakhsh KASAEIAN, Somayeh TOGHYANI, Mohammad Hossein AHMADI, R. SAIDUR, Tingzhen MING

Journal Article

Particle-bound polycyclic aromatic hydrocarbons in typical urban of Yunnan-Guizhou Plateau: Characterization

Journal Article

Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Journal Article

Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Journal Article

Chemically triggered life control of “smart” hydrogels through click and declick reactions

Journal Article

The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

Journal Article

Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

Journal Article

Occurrence and removal of

Lin WANG,Yongmei LI,Xiaoling SHANG,Jing SHEN

Journal Article

Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification in wastewater treatment: Comparison of sludge types

Lin Lin, Ying-yu Li, Xiao-yan Li

Journal Article