• Title/Summary/Keyword: 호재

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Development of Polymer Mortar Protection Block for Erosion Control Works (폴리머 모르터를 이용한 사면보호재의 개발)

  • Ryu, Neung-Hwan;Yeon, Kyu-Seok;Kim, Ki-Sung;Lee, Youn-Su
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.40 no.5
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    • pp.52-58
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    • 1998
  • The objective of this study was to develop a polymer mortar protection block with high strength and durability using unsaturated polyester resin to complement defects of conventional cement mortar protection block. Physical and mechanical properties of the polymer mortar protection block were also investigated. Low absorptivity, high impact strength, and great bending strength of the polymer mortar protection block was compared with those of the conventional cement protection block. In conclusion, the polymer mortar protection block is excellent and useful as industrial products for erosion control works.

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Durability of Hydrophilic Alkali Silicate Impregnant of Concrete Structure (알칼리 실리케이트계 침투성 콘크리트 표면보호재의 내구특성)

  • Song, Hun;Lee, Jong-Kyu;Chu, Yong-Sik;Kim, Young-Yup
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2007.11a
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    • pp.91-94
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    • 2007
  • It is essential every concrete structure should continue to perform its intended functions, that is maintain its required strength and durability, during the service life. However, deterioration occurs more progressively from the outside of concrete exposed to severe conditions. Deterioration in the concrete structure is due to carbonation and chloride ion attack. Therefore, concrete structure is needed to surface protection for increase durability using impregnant. Impregnant classify into two large groups in polymeric and silicate materials. Silicate impregnant is included silane and alkali silicate(sodium and lithium silicate). Thus, this study is concerned with carbonation and chloride ion resistance of self cleaning hydrophilic impregnant of concrete structure using lithium and potassium silicate. From the experimental test result, lithium and potassium silicate have a good properties as a carbonation and chloride ion resistance. Lithium and potassium silicate make good use of hydrophilic impregnant.

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