• Title/Summary/Keyword: 경화체

Search Result 668, Processing Time 0.024 seconds

Influence of Blending Materials on C1- Diffusion and pH of Pore Solution in Cement Pastes (시멘트 경화체 중에서의 C1-의 확산과 세공용액의 pH에 미치는 혼화재의 영향)

  • 김남중;최상흘;정재동;한기성
    • Magazine of the Korea Concrete Institute
    • /
    • v.4 no.1
    • /
    • pp.97-106
    • /
    • 1992

  • Apparent diffusion coefficients of Cl- ions through hardened cement pastes(HCP), which were partly subs¬tituted blast furnace slag, fly ash and silicafume for ordinary Portland cement, were determined. Also. Cl- and OW concentration of pore solutions which were extracted from HCP and the capacities of the HCP to bind CI were determined. Diffusion coefficients of Cl- ions through HCP were increased with water cement ratio(WfC), but decreased with addition of the blending materials. On the contrary, Cl- and OH concentration of the pore solutions were reduced by adding the blending materials.

  • https://doi.org/10.22636/MKCI.1992.4.1.97 인용 PDF

Study on the Characteristic of Non Cement Matrix using Blast Furnace Slag (고로슬래그를 사용한 무시멘트 경화체의 특성 연구)

  • Park, Sun-Gyu
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2013.05a
    • /
    • pp.101-102
    • /
    • 2013

  • 시멘트 및 건설산업은 그 제조과정에서 다량의 이산화탄소를 배출하기 때문에 지구온난화 문제를 가속화시키고 있는 것으로 알려져 있다. 따라서 이러한 시멘트를 대체할 수 있는 재료 개발에 많은 연구가 이루어지고 있으며, 철강산업 부산물인 고로슬래그 미분말은 그 중 하나의 재료라 할 수 있다. 고로슬래그 미분말은 물과 직접 반응하지 않으나 알칼리 환경하에서는 물과 반응하여 CSH 수화물을 생성하게 된다. 본 연구에서는 알칼리 자극제를 첨가한 경우의 무시멘트 경화체에 대한 강도 및 수화 특성에 대하여 분석하고자 하였다.

  • PDF

A Study on the Strength and Fracture Toughness of High Strength Hardened Cement Paste (고강도 시멘트 경화체의 강도 및 파괴인성에 관한 연구)

  • 김정환
    • Magazine of the Korea Concrete Institute
    • /
    • v.6 no.6
    • /
    • pp.151-158
    • /
    • 1994

  • In this work, in order to inrprove the flexural strength of hardened portlarid cerncrit paste, mix ing water was reduced to water ccrnent ratio of 0.1 aid water soluble polymer such as hydroxy propyl methyl cellulose was adclelri to the paste to obtain a better dispersion. The paste was kneaded by the twin roll mill for cornpact and homogeneous mixing. The high strength mechanism of the hardened cement paste may be due to the removal of macropores larger than 100${\mu}m$, the reduction of capillary pores acting as the passage of crack propagation, the increase of Young's moculus with iticrease of unhytlratcci cenxxnt ard the incicasc of fracture toughnevs with the crack toughening mechanism (grain bridging, polymer fibril bridging and fritional inter-locking).

  • https://doi.org/10.22636/MKCI.1994.6.6.151 인용 PDF