• 제목/요약/키워드: Alinite

검색결과 5건 처리시간 0.031초

Alinite계 클링커 제조(製造) 시 MgO의 영향(影響) (Effect of MgO in Synthesis of Alinite Clinker)

  • 유광석;안지환;한동윤;조계홍;오명환
    • 자원리싸이클링
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    • 제18권3호
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    • pp.49-54
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    • 2009
  • Alinite계 클링커 합성 시 MgO의 영향에 대해 검토하였다. Alinite 조성비 및 Alinite 조성비에 MgO를 3.77% 대체하여 $760^{\circ}C$$800^{\circ}C$에서 $1,400^{\circ}C$까지 $100^{\circ}C$ 간격으로 3시간 열처리하여 합성 상 및 수화열을 측정하였다. MgO를 첨가하지 않은 경우, $1,300^{\circ}C$에서 alinite, CCA와 함께 ${\beta}-C_2S$상과 f-CaO가 다량 존재하였으나, MgO를 첨가한 경우, $1,300^{\circ}C$이상에서 alinite 상만이 존재하였으며, $1,300^{\circ}C$에서 가장 높은 형성률을 보였다. 또한, MgO를 첨가한 경우, OPC에 비해 유도기를 거치지 않은 수화거동을 보였다.

고형 폐기물 소각재를 이용한 alinite 시멘트의 합성 (Synthesis of Alinite Cement Using Combustion Ash of Solid Wastes)

  • 강현주;홍성수;임계규;오희갑;김정석;민경소
    • 한국세라믹학회지
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    • 제37권8호
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    • pp.768-773
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    • 2000
  • Alnite clinker, which is based on CaO-SiO2-CaCl2 system, was synthesized by recycling Cl-containing waste, and its hydraulic properties were onvestigated. Alinite coinkers with two different chemical compositions were burned for 10∼30 minutes in the range of temperature, 1350∼1450$^{\circ}C$. The microstructures of those clinkers were characterized by powder X-ray diiffracuion analysis, optical microscope, and scanning electronic microscope and heat of hydration of alinite cements which was measured in order to investigate hydraulic properties. X-ray analysis shwoed that f-CaO in both clinkers with different compositions significantly was decreased with transforming C2S(belite) to C3S(alite). From the results of microscopy and scanning electron microscopy(SEM), crystal of synthesized alite(C3S) was larger and better crystallinity than that of ordinary portland cement.

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Synthesis of Alinite-Calciumchloroaluminate System Cement Using Solid State Waste

  • Cho, Jin-Sang;Han, Gi-Chun;Kim, Hyung-Seok;Ahn, Ji-Whan;Kim, Hwan;Lee, Hyoung-Ho
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.581-585
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    • 2001
  • Alinite-Calciumchloroaluminate system clinker was synthesized from solid state waste. The raw materials were municipal incineration ash, sewage sludge, limestone and clay. ecocement was prepared by the mixing of synthesized clinker and optimum amount of gypsum and its hydrolysis characteristic was investigated. X-ray diffraction, conduction calorimeter and reflecting microscope were used to analyze structural and physical properties. The main phase of clinker were alinite, calcium chloroaluminate. $C_2$S, $C_3$S. From the results of hardening time, hydration reactivity of synthesized all samples was faster than that of ordinary portland cement.

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