http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
실트질 매립지 차수층에 벤토나이트와 시멘트가 투수성 및 압축강도에 미치는 영향
임남웅 중앙대학교 건설산업기술연구소 2000 건설산업기술연구소 논문집 Vol.1 No.-
The optimal use of bentonite and coment for the landfill liner compacted with silt soil was described in this paper, in connection with the previous study^(1). Techniques employed in this optimization included the permeability (KSF 2322) and compressive strength (KSF 2314) as reported before. The optimal amount of these materials to the compacted soil liner was determined in accordance with a regulatory guideline of the government ; that is, k=1×10^-7㎝/sec. The testing soils were CL(Clayey Soil) and SC(Silt Clay), in accordance with USCS(Unified Soil Classify System). The results showed that the optimal amounts of bentonite and cement to mix with the CL soil for the landfill liner were 5% of bentonite and 5% of cement ; namely, k=9.98×10^-8㎝/sec and σ_28 = 18.7㎏/㎠. For the SC soil, the optimal amount of bentonite was 10%, in conjunction with 5% of cement ; namely, k=9.65×10^-8㎝/sec and σ_28 = 18.1㎏/㎠. It was concluded that the compacted CL ar SC soil liner, with containing the optimal amounts of bentonite and cement showed the acceptable permeability and compressive strength, referring to a regulatory guideline of the government for the landfill construction.
임남웅 中央大學校 建設環境硏究所 1996 環境科學硏究 Vol.7 No.-
In view of material properties shown in the KS(Korean Standard) requirements, the waste concrete, obtained from the demolished apartments, has been assessed as possible materials for asphalt concrete pavement and sub-base layer of road construction, The standards include the moisture content, density, particle size distribution and marshal stability for assessing the asphalt concrete pavement. CBR, plasticity and grindability are also included for sub-base layer. The results showed that the material properties(such as the moisture content and density) of the samples performed poorly as a structural filler for the asphalt concrete. 1.96%∼2.68% of the moisture content(<1.0% of KSF requirement) and 2.39∼2.47 g/cc of the density (>2.60 g/cc of KSF requirement) have been resulted in, wheres the particle size was satisfactorily distributed, compared to KSF requirements. 10014∼1053kg of the marshal stability (>500 kg of KSF requirement) have been acheived when 5.0%∼5.5 % by weight of the asphalt content were blended. The other properties(e.g. saturation, voidability and flowability) were poorely valued with the asphalt content given above. In the tests for sub-base layer, the engineering properties(such as plasticity, CBR, and grindability) have been satisfied, referred to standard guidlines. It was concluded that the waste concrete samples were disqualified as a structural filling material in asphalt concrete pavement, referred to KSF requirements. However, the engineering properties of the samples for use of the sub-base layer were satisfied, with standard guidlines.
임남웅 中央大學校 建設環境硏究所 1995 環境科學硏究 Vol.6 No.-
The possible utilization of waste concrete, obtained from the demolished apartments for new constructions, as a filler in asphalt concrete pavement of the road construction has been assessed. The assessment performed in this study includes the engineering properties (such as moisture content, particle size distribution density and marshal stability). The tests conducted were referred to KSF requirement's It was found that the waste concrete possessed the favorable engineering properties as a filler in asphalt concrete pavement of the road construction. 0.2% of moisture content(<1.0% of KSF requirement), 2.65 of density(>2.6 of KSF requirement), 1035∼1255 kg of marshal stability(>500kg of KSF requirement) have been resulted in. The particle size was satisfactorily distributed, compared to KSF requirement. It is concluded that the waste concrete can be reused as a structural filling material in asphalt concrete of the road construction, subject to use together with raw aggregate and 6% of asphalt content.