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The Dust Storm Phenomena in Ningxia and the Countermeasures

Gao Qingxia,Ren Zhenhai

Strategic Study of CAE 2002, Volume 4, Issue 2,   Pages 16-21

Abstract: Ningxia region, the spatial distribution and trend of dust storm phenomena (include dust storm, blowing sandand floating sand) are analyzed.

Keywords： storm     preventing and controlling dust storm and desertification     countermeasures and suggestion     blowing sand     floating sand    

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Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 361-365 doi: 10.1007/s11708-012-0210-1

Abstract: This paper describes an innovative method of using a non-buoyant body to harness ocean waves. All the point absorbers are buoyant in nature and move up due to buoyancy and come down because of gravity. The point absorbers are designed to move along the waves to make the device efficient. These devices face excessive stress during the rough weather on account of the extreme motion of waves and cause the total device failure. The present study shows that using a non-buoyant body for conventional point absorber principle is much efficient and safer than any other device proposed till today. A small scale wave energy converter with non-buoyant body was designed, fabricated and tested in small scale wave maker. An electrical generator was coupled with the device to generate electrical energy from harnessed waves. The generator was electrically loaded and the generated power was measured. It was found from the experiments that the proposed device showed a significant improvement in electricity generation and safety during extreme conditions. In addition to the electricity generation, the characteristics of the device were also studied by using various wave and device parameters.

Keywords： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     electrical energy    

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Numerical simulation of compaction parameters for sand-filled embankment using large thickness sand filling

Wentao WANG, Chongzhi TU, Rong LUO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 568-576 doi: 10.1007/s11709-017-0444-4

Abstract: The study uses the finite element method to simulate a new technique of highway sand embankment fillingin Jianghan Plain district, which can raise the thickness of sand-filled layer from 30 cm to 70 cm andcan significantly shorten the construction period based on the guarantee of sand embankment constructionThe simulation results indicate that the sand-filled layer thickness of 70 cm is suitable for the newsand filling technique, and the sand-filled embankment project with tight construction period is suggested

Keywords： sand embankment     compaction in large thickness     numerical simulation     small size vibratory roller     steady    

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Unified description of sand behavior

Feng ZHANG, Bin YE, Guanlin YE

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 121-150 doi: 10.1007/s11709-011-0104-z

Abstract: In this paper, the mechanical behavior of sand, was systematically described and modeled with a elastoplasticWithout losing the generality of the sand, a specific sand called as Toyoura sand, a typical clean sandIn the model, the results of conventional triaxial tests of the sand under different loading and drainageloading tests, then they are fixed to uniquely describe the overall mechanical behaviors of the Toyoura sand

Keywords： constitutive model     sand     stress-induced anisotropy     density     structure    

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Research review of the cement sand and gravel (CSG) dam

Xin CAI, Yingli WU, Xingwen GUO, Yu MING

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 19-24 doi: 10.1007/s11709-012-0145-y

Abstract: The cement sand and gravel (CSG) dam is a new style of dam that owes the advantages both of the concrete

Keywords： cement sand and gravel (CSG) dam     cement sand and gravel (CSG) material     research review    

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Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete

Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1453-1473 doi: 10.1007/s11709-022-0877-2

Abstract: Construction industries have started to utilize manufactured sand (MS) as an effective alternative forriver sand in concrete.

Keywords： manufactured sand     fresh concrete     microfines     admixtures     shrinkage     cracking    

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Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1634-z

Abstract:

● Backwashing in sand filters with 2-h and 4-h EBCTs was simulated

Keywords： Sand filter     Backwashing     Recovery     Micropollutants     Community composition    

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Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: As such, a detailed experimental investigation was carried out to evaluate the effect of sand-to-aggregate

Keywords： aggregates     non-destructive testing     sand-to-aggregate volume ratio (s/a)     maximum aggregate    

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Dynamic performance of submerged floating tunnel with different mooring styles subjected to anchor cable

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0932-7

Abstract: Submerged floating tunnels (SFTs) are novel structures for transportation across long- and deep-strait

Keywords： dynamic behaviors     submerged floating tunnel     cable failure     mooring style     progressive failure    

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Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 754-772 doi: 10.1007/s11709-021-0711-2

Abstract: Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregateTwo different types of fine (coarse) aggregates are considered: sea sand and river sand (natural andSSRAC increase with decreasing recycled coarse aggregate replacement percentage and increasing sea sandhowever, the deformation differences between coarse aggregate and cement mortar reduce by adopting sea sand

Keywords： sea sand recycled aggregate concrete     recycled coarse aggregate replacement percentage     sea sand chloride    

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Performance of fiber reinforced clayey sand composite

Amin CHEGENIZADEH, Hamid NIKRAZ

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 147-152 doi: 10.1007/s11709-012-0158-6

Abstract: This study focuses on effect of fiber inclusion on the strength and other parameters of clayey sand compositeFirst part of this study is related to effective parameters on strength of the clayey sand composite

Keywords： triaxial     consolidated undrained (CU)     fiber     strength    

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Numerical simulation of multi-body floating piers to investigate pontoon stability

Mostafa Shahrabi, Khosrow Bargi

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 325-331 doi: 10.1007/s11709-013-0209-7

Abstract: The objective of this study is to develop a procedure to analyze the motions of a floating pier comprisedA floating pier consists of a pier, access bridge, mooring system and fender system, each of which comes

Keywords： coastal structures     numerical simulation     floating pier     rigid pontoons     stability    

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The coupling of sand with ZVI/oxidants achieved proportional and highly efficient removal of arsenic

Sana Ullah, Xuejun Guo, Xiaoyan Luo, Xiangyuan Zhang, Yameng Li, Ziyu Liang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1273-6

Abstract: . • Sand doping facilitated proportional As trapping along the ZVI/oxidants column. • ZVI/sand/oxidantsare highly efficient for arsenic removal. • ZVI/sand/oxidants reduced significantly the Fe2+ leachingand effluent turbidity. • More than 54% of arsenic was reduced to As(III) in ZVI/sand/oxidants systemIn a packed column with a 1:20 mixture of ZVI and sand, the average As removal efficiency was 36 (1stMoreover, the leaching of Fe was significantly reduced with an increased sand ratio, resulting in clearer

Keywords： Arsenic     ZVI     Sand     Oxidants     Fixed-bed Column     Removal    

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Effect of microlimestone on properties of self-consolidating concrete with manufactured sand and mineral

Fulin Qu, Wengui Li, Xiaohui Zeng, Zhiyu Luo, Kejin Wang, Daichao Sheng

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1545-1560 doi: 10.1007/s11709-020-0678-4

Abstract: Self-consolidating concrete (SCC) with manufactured sand (MSCC) is crucial to guarantee the quality ofproperties of MSCC with different microlimestone powder (MLS) replacements of retreated manufactured sandhas the highest strength in the late age, which is even better than that of SCC made with the river sandThe obtained results can be used to promote the application of SCC made with manufactured sand and mineral

Keywords： microlimestone powder     manufactured sand     retreated manufactured sand     self-consolidating concrete     mineral    

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A method for predicting consolidation settlements of floating column improved clayey subsoil

Jinchun CHAI, Supasit PONGSIVASATHIT,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 241-251 doi: 10.1007/s11709-010-0024-3

Abstract: A method of predicting the consolidation settlement-time curve of floating soil-cement column on improvedIt is suggested that the method can be used for designing the soft clayey subsoil improvement using floating

Keywords： cement depth mixing     ground improvement     consolidation     settlement    

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Title Author Date Type Operation

The Dust Storm Phenomena in Ningxia and the Countermeasures

Gao Qingxia,Ren Zhenhai

Journal Article

Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

Journal Article

Numerical simulation of compaction parameters for sand-filled embankment using large thickness sand filling

Wentao WANG, Chongzhi TU, Rong LUO

Journal Article

Unified description of sand behavior

Feng ZHANG, Bin YE, Guanlin YE

Journal Article

Research review of the cement sand and gravel (CSG) dam

Xin CAI, Yingli WU, Xingwen GUO, Yu MING

Journal Article

Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete

Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA

Journal Article

Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand

Journal Article

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Dynamic performance of submerged floating tunnel with different mooring styles subjected to anchor cable

Journal Article

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Journal Article

Performance of fiber reinforced clayey sand composite

Amin CHEGENIZADEH, Hamid NIKRAZ

Journal Article

Numerical simulation of multi-body floating piers to investigate pontoon stability

Mostafa Shahrabi, Khosrow Bargi

Journal Article

The coupling of sand with ZVI/oxidants achieved proportional and highly efficient removal of arsenic

Sana Ullah, Xuejun Guo, Xiaoyan Luo, Xiangyuan Zhang, Yameng Li, Ziyu Liang

Journal Article

Effect of microlimestone on properties of self-consolidating concrete with manufactured sand and mineral

Fulin Qu, Wengui Li, Xiaohui Zeng, Zhiyu Luo, Kejin Wang, Daichao Sheng

Journal Article

A method for predicting consolidation settlements of floating column improved clayey subsoil

Jinchun CHAI, Supasit PONGSIVASATHIT,

Journal Article