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Recycling municipal incinerator fly- and scrubber-ash into fused slag for the substantial replacement of cement in cement-mortars

Lee, Tzen-Chin ; Rao, Ming-Kang

Waste Management, 2009, Vol.29(6), pp.1952-1959 [Tạp chí có phản biện]

ISSN: 0956-053X ; E-ISSN: 1879-2456 ; DOI: 10.1016/j.wasman.2009.01.002

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  • Nhan đề:
    Recycling municipal incinerator fly- and scrubber-ash into fused slag for the substantial replacement of cement in cement-mortars
  • Tác giả: Lee, Tzen-Chin ; Rao, Ming-Kang
  • Chủ đề: Engineering ; Chemistry
  • Là 1 phần của: Waste Management, 2009, Vol.29(6), pp.1952-1959
  • Mô tả: Fly- and scrubber-ash (weight ratio of approximately 1:3) from municipal solid waste incinerators (MSWI) are a major land-fill disposal problem due to their leaching of heavy metals. We uniformly mixed both types of ash with optimal amounts of waste glass frit, which was then melted into a glassy slag. The glassy slag was then pulverized to a particle size smaller than 38 μm for use as a cement substitute (20–40% of total cement) and blended with sand and cement to produce slag-blended cement-mortar (SCM) specimens. The toxicity characteristics of the leaching procedure tests on the pulverized slag samples revealed that the amount of leached heavy metals was far below regulatory thresholds. The compressive strength of the 28-day cured SCM specimens was comparable to that of ordinary Portland cement mortars, while the compressive strength of specimens cured for 60 or 90 days were 3–11% greater. The observed enhanced strength is achieved by Pozzolanic reaction. Preliminary...
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0956-053X ; E-ISSN: 1879-2456 ; DOI: 10.1016/j.wasman.2009.01.002

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