• Title/Summary/Keyword: waste lime, admixture

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Development of Amended Clay Liner for Waste Containment System (매립장의 인공점토차수재 개발에 관한 연구)

  • 신은철;김성환;오영인
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 1997.05a
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    • pp.70-73
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    • 1997
  • Recycling of$\boxUl$ useful industrial waste is highly recommended by the government. Some geotechnical properties such as specific gravity, dry density, unconfined compressive strength, pH. compressibility, permeability were determined to evaluate the feasibility of waste lime use in the landfill as an admixture clay liner. Various types of environmental tests on waste lime were conducted to compare the results with the EPA requirements. Laboratory test results indicate that admixture soil(waste lime/decomposed granite soil) is a promising material its an admixture clay liner in the sanitary landfill.

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폐석회 혼합토사의 환경영향 저감방안 연구

  • Hong, Seung-Seo;Jeong, Ha-Ik;Yoo, Jun
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2003.09a
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    • pp.95-98
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    • 2003
  • Waste lime is produced as by-products in chemical industry, Reuse of waste lime mixed with soil for banking and backfill material in civil works was analysed in this study. For this purpose, environmental effect of waste lime admixtures was tested. Thus, this study presents the leaching characterization of waste lime in laboratory batch and column tests. Countermeasure for reduction of environmental effects was suggested from the test results.

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Characteristics of compressive strength of hardening used by fly ash and waste lime (다량의 폐석회와 석탄회를 이용한 경화체의 강도적 특성)

  • 고대형;이정재;박응모;문경주;소양섭
    • Proceedings of the Korea Concrete Institute Conference
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    • 2001.11a
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    • pp.653-658
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    • 2001
  • The purpose of this study is to evaluate the compressive strength properties of hardening using the unrefined fly-ash and waste lime and to offer basic data to someone for recycling waste lime Waste limes are tested that specific gravity and pH value and observed microstructure of particle with SEM. The compressive strengths of Wast lime hardening which is mixed with regular ratio according to each admixture are measured. In the results of test, The pH of wast lime is very high by pH 12.1 and specific gravity is 2.22. Compressive strengths on hardening modified waste lime and fly ash is very effective. The vest compressive strengths is show that CaCl$_2$ existed in waste lime

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Development of Landfill Material by Utilizing Waste Lime

  • Shin, Eun-Chul;Oh, Young-In
    • Journal of the Korean Geotechnical Society
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    • v.15 no.3
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    • pp.17-25
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    • 1999
  • The feasibility of using waste lime, which is produced as a byproduct during the manufacture of sodium carbonate in Inchon, Korea. as a stabilization admixture with weathered granite soil was investigated. Laboratory tests were conducted to determine the chemical composition, pH, compaction characteristics, unconfined compression strength. X-ray diffraction analysis of waste lime and weathered granite soil admixtures. Based on the present tests, it appears that the admixtures are environmentally safe and can be used as landfill material.

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Reinforcing Effect of Dredged Marine Clay Mixed with Micro-Fiber (Micro-Fiber 흔라네 의한 준설해성점토의 보강효과)

  • 박영목;우문정;허상목;정연인
    • Journal of the Korean Geotechnical Society
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    • v.19 no.4
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    • pp.75-81
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    • 2003
  • To investigate the reinforcing effect of subsurface layers of marine dredged clay(DMC) mixed with the micro-fiber(MF), a series of laboratory tests were performed on the DMC specimens with and without MF through uniaxial and triaxial compression tests. For the test programme, the elapsed time after dredging of marine clay, mixing rate and length of MF, and curing time of the composite were chosen as the important factors affecting the strength behaviour. The strength of the DMC mixed with MF and waste lime(WL) used for the admixture was found to be enhanced with the increasing content and length of MF, and with decreasing water content of DMC. MF and WL were applied as materials for trafficability improvement of the very soft reclaimed ground by DMC.

A Fundamental Study on Properties of Mortar using Non-Sintered Cement (비소성시멘트를 사용한 모르터의 물리적 특성에 관한 기초적 연구)

  • Kim Han-sic;Choi Maeng-Ki;Han Da-Hee;Park Hee-Gon;Paik Min-Su;Jung Sang-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2005.11a
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    • pp.101-104
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    • 2005
  • The world's cement demand is anticipated to increase about 2.558$\%$ every year until the first half of the 21st century. To be closed the increase of cenment damand and simultaneously comply with the Kyoto Protocal, cement that gives less carbon dioxide(Co2) discharge should be urgently developed. If cement can be manufactured with industrial byproducts such as granulated blast furnace slag(GBFS), phosphogypsum(PG), and waste lime(WL) instead of clinker as its counterproposal, there would be many advantages including maximum use of these industrial byproducts for high value-added resources, conservation of natural resources and energy by omitting the use of clinker, minimized environmental pollution problems caused by Co2 discharge and reduction of the cost. So this study aims to solve the problems by manufacturing non-sintered cement.

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