Oxynitride Glass Reinforced Cement Composites

1990 ◽  
Vol 211 ◽  
Author(s):  
Gary. L. Leatherman ◽  
Tahar El-Korchi ◽  
Thomas M. Holmes ◽  
R. Nathan Katz
Keyword(s):  
Surface Chemistry ◽  
Accelerated Aging ◽  
Oxide Glass ◽  
Cement Composites ◽  
Reinforced Composites ◽  
Glass Fiber Reinforced ◽  
Oxynitride Glass ◽  
Reinforced Cement ◽  
The Difference ◽  
Glass Reinforced Composites

AbstractGlass fiber reinforced composites made with an oxynitride analogue of alkali resistant glass were tested in tension after accelerated aging. The results were compared to composites made from oxide alkali resistant glass. The strength of the oxynitride glass reinforced composites was almost double that of the oxide glass based material. The results are related to the improved properties of oxynitride glass over oxide glass. In particular previous work has shown that surface chemistry of the oxynitride glass inhibits the formation of a strong bond between fiber and matrix. The difference in surface chemistry was examined by measuring the contact angle of aqueous solutions with respect to nitrogen content of the glass.

Electromagnetic Wave Absorbing Properties of Glass Fiber Reinforced Cement Composites with Special-Shaped Structure Surfaces

2013 ◽  
Vol 401-403 ◽  
pp. 614-618
Author(s):  
Yue Fang Zhang ◽  
Wan Jun Hao ◽  
Bao Yi Li ◽  
Yu Ping Duan ◽  
Shun Hua Liu
Keyword(s):  
Electromagnetic Wave ◽  
Glass Fiber ◽  
Building Materials ◽  
Impedance Matching ◽  
Cement Composites ◽  
Absorption Property ◽  
Frequency Range ◽  
Glass Fiber Reinforced ◽  
New Material ◽  
Reinforced Cement

In order to reach high electromagnetic wave absorption property, here we developed a cement composites building materials. Special-shaped structure surfaces have been designed to make the continuity change of impedance and increase the incident times for electromagnetic wave. Different ratio of flexible glass fiber were introduced to adjust the impedance matching characteristics of the composites and to attenuate the incident wave by scattering. As the concentration of 9% glass fiber and the surface of rectangle, the reflectivity reached the highest in the absorber with 20mm thickness. the lowest reflection loss of-15.8 dB was obtained at 8.9GHz, and the effective absorption bandwidth (less than-8 dB) reached 12 GHz in the frequency range of 1.7~18 GHz. The new material can be used for building indoor electromagnetic radiation protection.

Durability of glass fiber reinforced cement composites:

1997 ◽  
Vol 5 (3-4) ◽  
pp. 100-108 ◽  
Author(s):  
Shashidhara Marikunte ◽  
Corina Aldea ◽  
Surendra P. Shah
Keyword(s):  
Glass Fiber ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Reinforced Cement
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