Ozone treatment of carbon fiber for reinforcing cement

Fu, Xin; Lü, Weiming; Chung, D.D.L.

doi:10.1016/s0008-6223(98)00115-8

Cited by 222 publications

(96 citation statements)

References 28 publications

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“…A gross classification would associate the bands from 1600-1800 cm -1 primarily with carboxyl/carbonyl structures (C=O), and those from 1100-1400 cm -1 with phenolic or etheric structures (C-O) [33][34][35]. This is in agreement with the features seen in the XPS O1s peak and with some earlier studies of ozone treatment on carbon fibers [17]. Within the bands are specific peaks whose spectral locations vary between the air oxidized and ozonated carbon black samples.…”

Section: Xps Analysissupporting

confidence: 85%

“…The literature provides much insight into carbon surface chemistry and its role in adsorption [3,[13][14][15][16] but this role depends greatly on the adsorbate and very few of these studies have examined surfactants [3,4]. A number of studies have examined carbon surface treatment with ozone [7,13,[17][18][19][20][21][22][23][24][25][26], but only our recent work has focused on its effect on surfactant adsorptivity [7]. This previous study did not yield a complete understanding on adsorption mechanism, in large part due to the complexity of the ash/surfactant system.…”

Section: Introductionmentioning

confidence: 99%

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Strategies and Technology for Managing High-Carbon Ash

Hurt¹,

Suuberg²,

Veranth³

et al. 2002

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The overall objective of the present project is to identify and assess strategies and solutions for the management of industry problems related to carbon in ash. Specific research issues to be addressed include:• the effect of parent fuel selection on ash properties and adsorptivity, including a first ever examination of the air entrainment behavior of ashes from alternative (non-coal) fuels.• the effect of various low-NOx firing modes on ash properties and adsorptivity• the kinetics and mechanism of ash ozonation. This data will provide scientific and engineering support of the ongoing process development activities.During this fourth project period we completed the characterization of ozone-treated carbon surfaces and wrote a comprehensive report on the mechanism through which ozone suppresses the adsorption of concrete surfactants.4

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Section: Xps Analysissupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Strategies and Technology for Managing High-Carbon Ash

Hurt¹,

Suuberg²,

Veranth³

et al. 2002

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“…The less cost of carbon fiber provides it a special importance in cement-matrix composites [27,28]. We can also give a surface treatment of carbon fiber as it may improve the bond between the fiber and the matrix, thereby improving the properties of the composite [29]. By this, the volume fraction increases, and negated content becomes terribly high [30].…”

Section: Choice Of Materialsmentioning

confidence: 99%

Review on pressure sensors for structural health monitoring

et al. 2017

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This paper reports the state of art in a variety of pressure and the detailed study of various matrix based pressure sensors. The performances of the bridges, buildings, etc. are threatened by earthquakes, material degradations, and other environmental effects. Structural health monitoring (SHM) is crucial to protect the people and also for assets planning. This study is a contribution in developing the knowledge about self-sensing smart materials and structures for the construction industry. It deals with the study of self-sensing as well as mechanical and electrical properties of different matrices based on pressure sensors. The relationships among the compression, tensile strain, and crack length with electrical resistance change are also reviewed.

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“…In addition, sizing material covering carbon fiber prevents thermoplastic resin from sticking to carbon fiber. This is the reason why mechanical strength of thermoplastic CFRP does not satisfy industrial requirements [13,14]. To enhance the adhesion, treating methods have been developed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electric Field on Adhesion of Thermoplastic Resin against Steel Plate

et al. 2017

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This work shows new method which controls adhesion strength between acrylic resin and metal mold with electric field. Usage of electric field is considered as a new solution to control adhesion of thermoplastic resin in Carbon-Fiber-Reinforced ThermoPlastic (thermoplastic CFRP) stamping process because this method can prevent CFRP from its degradation. In this work, we establish new adhesion tester which can apply Direct Current (DC) or Alternating Current (AC) field on metal specimens. In the results, when DC −12 V/mm is imposed on metal specimens, adhesion strength increases to 0.81 MPa which is 57% higher than that of no field condition. Negative component of surface energy after imposing DC −12 V/mm on metal specimens is 7.6 mJ/m 2 . This value is 56% smaller than that of no field condition. When AC electric fields is imposed, adhesion strength decreases from no electric field condition. The most effective AC field condition is AC 10 V/mm with 1 MHz, in which case adhesion strength is 0.29 MPa. This value is 44% lower than that of no field condition.

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Ozone treatment of carbon fiber for reinforcing cement

Cited by 222 publications

References 28 publications

Strategies and Technology for Managing High-Carbon Ash

Strategies and Technology for Managing High-Carbon Ash

Review on pressure sensors for structural health monitoring

Effect of Electric Field on Adhesion of Thermoplastic Resin against Steel Plate

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