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http://dx.doi.org/10.11112/jksmi.2015.19.1.100

Improvement of the Strength Properties and Impact Resistance of the Cement Composite Materials by the use of Surface Modification of the Aramid Fibers  

Nam, Jeong-Soo (일본동경공업대학 응용세라믹연구소 건축물리연구센터)
Yoo, Jae-Chul (충남대학교 건축공학과)
Kim, Gyu-Yong (충남대학교 건축공학과)
Kim, Hong-Seop (충남대학교 건축공학과)
Jeon, Joong-Kyu (코오롱글로벌 R&BD센터)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.1, 2015 , pp. 100-108 More about this Journal
Abstract
The purpose of this study is to evaluate the effect of improvement on the impact resistance and strength properties of cement composites by surface modification of aramid fiber. For aramid fiber reinforced cement composites, therefore, dispersion capability and the bonding efficiency between the fibers and the cement composite material need to be improved. It is possible by modifying surface properties to hydrophobic, it is considered that oiling agent ratio of 1.2 % and improvement of performance is in need to be investigated. In this study, short aramid fibers were mixed by different fiber length and oiling agent ratio. And improvement of strength properties and impact resistance performance of hybrid cement composites were evaluated under the influence of steel fiber. As a result, strength properties of aramid fiber reinforced cement composites are different by mixing ratio of fiber, oiling agent ratio and length of fiber. In case of cement composites which have same volume fraction and fiber length, tensile strength and flexural strength were improved with increase of the emulsions throughput of the fiber surface. The results of evaluation on the static strength properties had effects on impact resistance performance by high-velocity impact. And it was observed that the scabbing of rear was suppressed with increase of the oiling agent ratio.
Keywords
Aramid fiber; Surface modification; Strength properties; High velocity projectile; Impact resistance;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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