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Effect of fiber hybridization on energy absorption and synergy in concrete

Ahmadreza RAMEZANI, Mohammad Reza ESFAHANI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1338-1349 doi: 10.1007/s17009-019-0558-2

Abstract: In the present study, steel and polypropylene (PP) fibers have been utilized with the intent of obtainingIt was observed that steel fibers are more effective in the improvement of flexural toughness in thepresence of PP fibers.Furthermore, synergy associated with the combination of fibers at different stages of deflection of the

Keywords： hybrid fiber-reinforced concrete     synergy     toughness     steel fibers     polypropylene fibers    

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Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylenefibers using extreme vertices mixture design

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 821-830 doi: 10.1007/s11709-019-0518-6

Abstract: studies have evaluated the effects of additives such as nano-silica (NS), micro-silica (MS) and polymer fibersIn this study, 12 mix designs containing different percentages of MS, NS, and polymer fibers in threeWhile, polymer fibers don’t have significant effect in compressive strength considering CSCs.

Keywords： mixture method     compressive strength     nano-silica     micro-silica     polypropylene fibers    

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Dyeing fine denier polypropylene fibers with phenylazo- β -naphthol-containing sulfonamide disperse

Zhihua CUI, Weiguo CHEN, Jinzong YANG, Shufen ZHANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 328-335 doi: 10.1007/s11705-009-0216-3

Abstract: The dyes were applied to coloring of knitted fabrics from fine denier polypropylene fibers by exhaustThen, dye exhaustion, color strength, and color fastnesses of the dyes on the fibers were assessed and

Keywords： polypropylene     FTIR     secondary sulfonamide     Orange     concentration    

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The effect of carbon nanotubes and polypropylene fibers on bond of reinforcing bars in strain resilient

Souzana P. TASTANI,Maria S. KONSTA-GDOUTOS,Stavroula J. PANTAZOPOULOU,Victor BALOPOULOS

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 2,   Pages 214-223 doi: 10.1007/s11709-016-0332-3

Abstract: tests, the matrix comprises a novel, strain resilient cementitious composite (SRCC) reinforced with polypropylenefibers (PP) with the synergistic action of carbon nano-tubes (CNT).investigation were the material structure (comprising a basic control mix, reinforced with CNTs and/or PP fibersThe test results illustrate that all the benefits gained due to the synergy between PP fibers and CNTselasto-plastic bond response envelope was a result of the confining synergistic effect of CNTs and the PP fibers

Keywords： carbon nanotubes     strain resilient cementitious composite     polypropylene fibers     tensile bending     bond    

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Investigation on multiple-melting behavior of nano-CaCO3/polypropylene composites

LIN Zhidan, ZENG Chunlian, MAI Kancheng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 81-86 doi: 10.1007/s11705-007-0017-5

Abstract: The multiple melting-peak behavior of polypropylene (PP) in nano-CaCO/PP composites and modified nano-CaCO

Keywords： polypropylene     nano-CaCO/PP     presence     melting-peak behavior     low-temperature    

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Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 81-91 doi: 10.1007/s11709-018-0468-4

Abstract: Fiber reinforced polymer(FRP) have unique advantages like high strength to weight ratio, excellent corrosion resistance, improving deformability and cost effectiveness. These advantages have gained wide acceptance in civil engineering applications. FRP tendons for prestressing applications are emerging as one of the most promising technologies in the civil engineering industry. However, the behavior of such members under the influence of elevated temperatures is still unknown. The knowledge and application of this could lead to a cost effective and practical considerations in fire safety design. Therefore, this study examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressed concrete beam at elevated temperatures. In this article, an analytical model is developed which integrates the temperature dependent changes of effective modulus of FRP in predicting the deflection behavior of CFRP prestressed concrete beams within the range of practical temperatures. This model is compared with a finite element mode (FEM) of a simply supported concrete beam prestressed with CFRP subjected to practical elevated temperatures. In addition, comparison is also made with an indirect reference to the real behavior of the material. The results of the model correlated reasonably with the finite element model and the real behavior. Finally, a practical application is provided.

Keywords： FRP     CFRP     concrete     elevated temperatures     deflections     prestress    

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The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 316-328 doi: 10.1007/s11709-022-0810-8

Abstract: To study the damage evolution behavior of polypropylene fiber reinforced concrete (PFRC) subjected toPFRC could still produce AE signals after peak load due to drawing effect of polypropylene fiber.was −0.042 and −0.056 respectively after 150 d of corrosion, indicating that the advantage of hybrid polypropylene

Keywords： polypropylene fiber reinforced concrete     sulfate attack     damage evolution behavior     acoustic emission    

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Recent developments in the application of oil palm fibers in cement composites

Emmanuel Owoichoechi MOMOH, Adelaja Israel OSOFERO

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 94-108 doi: 10.1007/s11709-019-0576-9

Abstract: Fibers obtained from different parts of the oil palm tree (Elaeis guineensis) have been under investigationStudies have been carried out investigating the engineering properties and possible applications of these fibersThis review provides information about fibers from different parts of the oil palm, their properties,

Keywords： broom     cement composite     concrete     oil palm fiber     Natural fiber-concrete     sustainability    

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environmental temperature and relative humidity on photocatalytic oxidation of toluene on activated carbon fibers

GUO Ting, BAI Zhipeng, WU Can, ZHU Tan

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 224-229 doi: 10.1007/s11783-008-0039-3

Abstract: TiO supported on active carbon fiber (TiO/ACF), an absorbable photocatalyst, is a new kind of material applied in air purification. In this paper, the influence of environmental temperature (T) and relative humidity (RH) on the gas-solid adsorption of toluene and the photocatalytic oxidation (PCO) efficiency of adsorbed toluene on TiO/ACF were studied, and then, the purification capability of TiO/ACF was estimated. PCO results showed that although the PCO efficiency increased under high RH and T levels, the amount of adsorption of toluene decreased. Moreover, quantitative analysis results of intermediates indicated that more environmental risk emerged when PCO of toluene was carried out at higher environmental T and RH levels because more toxic intermediates would be accumulated on the TiO/ACF. So, it is significant to control the environmental T and RH conditions in the application of the PCO technique. T = 25°C and RH = 30% is the optimal condition for purifying toluene in our experimental system.

Keywords： application     gas-solid adsorption     technique     TiO/ACF     experimental    

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Technology Progress of Polypropylene

Yuan Qingtang

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 29-36

Abstract:

This paper briefly reviews technical progress of polypropylene over nearly half century and summatizesthe main technology progress of polypropylene in China and abroad, while simply researching into thefuture development direction of polypropylene technology in China.

Keywords： polypropylene     technical progress     development direction    

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Phenolic rigid organic filler/isotactic polypropylene composites. III. Impact resistance property

Heming LIN, Dongming QI, Jian HAN, Zhiqi CAI, Minghua WU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 176-181 doi: 10.1007/s11705-009-0203-8

Abstract: A novel phenolic rigid organic filler (KT) was used to modify isotactic polypropylene (iPP).

Keywords： rigid organic filler     polypropylene     impact resistance    

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Dispersion of a novel phenolic rigid organic filler in isotactic polypropylene matrix by solution-mixing

Dongming QI, Xiaoli ZHAO, Zhijie CHEN, Peng HUANG, Jun CAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 395-402 doi: 10.1007/s11705-012-1269-2

Abstract: novel phenolic rigid organic filler (named KD) with a high melting point was dispersed in an isotactic polypropyleneA series of KD/iPP blends was prepared with or without addition of maleic anhydride-grafted polypropylene

Keywords： dispersion     rigid organic filler     isotactic polypropylene     mixing    

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Phenolic rigid organic filler/isotactic polypropylene composites. II. Tensile properties

QI Dongming, SHAO Jianzhong, WU Minghua, NITTA Kohhei

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 396-401 doi: 10.1007/s11705-008-0077-1

Abstract: A novel phenolic rigid organic filler (KT) was used to modify isotactic polypropylene (iPP).

Keywords： maximal     uniaxial tensile     unfilled     excellent tensile     influence    

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Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 840-852 doi: 10.1007/s11705-022-2253-0

Abstract: Herein, a Fe3+-loaded aminated polypropylene fiber has been reported as an efficient phosphate

Keywords： phosphate adsorption     aminated polypropylene fiber     Fe3+     ligand exchange     reusability    

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Speed Up the Development of Industrial Fibers Materials

Ji Guobiao

Strategic Study of CAE 2003, Volume 5, Issue 7,   Pages 24-28

Abstract:

Review of 10 years development of industrial fibers materials indicates that they are still in a continuous

Keywords： China     strengthening     industrial fibers materials     accelerateing the development    

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Title Author Date Type Operation

Effect of fiber hybridization on energy absorption and synergy in concrete

Ahmadreza RAMEZANI, Mohammad Reza ESFAHANI

Journal Article

Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylenefibers using extreme vertices mixture design

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Journal Article

Dyeing fine denier polypropylene fibers with phenylazo- β -naphthol-containing sulfonamide disperse

Zhihua CUI, Weiguo CHEN, Jinzong YANG, Shufen ZHANG,

Journal Article

The effect of carbon nanotubes and polypropylene fibers on bond of reinforcing bars in strain resilient

Souzana P. TASTANI,Maria S. KONSTA-GDOUTOS,Stavroula J. PANTAZOPOULOU,Victor BALOPOULOS

Journal Article

Investigation on multiple-melting behavior of nano-CaCO3/polypropylene composites

LIN Zhidan, ZENG Chunlian, MAI Kancheng

Journal Article

Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Journal Article

The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Journal Article

Recent developments in the application of oil palm fibers in cement composites

Emmanuel Owoichoechi MOMOH, Adelaja Israel OSOFERO

Journal Article

environmental temperature and relative humidity on photocatalytic oxidation of toluene on activated carbon fibers

GUO Ting, BAI Zhipeng, WU Can, ZHU Tan

Journal Article

Technology Progress of Polypropylene

Yuan Qingtang

Journal Article

Phenolic rigid organic filler/isotactic polypropylene composites. III. Impact resistance property

Heming LIN, Dongming QI, Jian HAN, Zhiqi CAI, Minghua WU

Journal Article

Dispersion of a novel phenolic rigid organic filler in isotactic polypropylene matrix by solution-mixing

Dongming QI, Xiaoli ZHAO, Zhijie CHEN, Peng HUANG, Jun CAO

Journal Article

Phenolic rigid organic filler/isotactic polypropylene composites. II. Tensile properties

QI Dongming, SHAO Jianzhong, WU Minghua, NITTA Kohhei

Journal Article

Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Journal Article

Speed Up the Development of Industrial Fibers Materials

Ji Guobiao

Journal Article