• Title/Summary/Keyword: Waste Stone Powder

Search Result 22, Processing Time 0.027 seconds

Development of Standard for Evaluating Performance of Cementitious Scagliola using Statistical Research on Generation Amount of Waste Stone and Waste Stone Powder (우리나라 폐석재, 폐석분 발생량 통계 조사 및 이를 활용한 시멘트계 인조대리석 내·외장재 개발에 따른 성능검증 시험 표준안 개발)

  • Park, Wan-Goo;Kim, Su-Ryon;Heo, Neung-Hoe;An, Ki-Won;Oh, Sang-Keun
    • Journal of the Korean Recycled Construction Resources Institute
    • /
    • v.8 no.1
    • /
    • pp.41-48
    • /
    • 2013
  • Waste Stone and Waste Stone Powder are recycling some cyclic aggregate only. And the greater part of Waste Stone and Waste Stone Powder are reclaining or neglecting. To solve this problem, the government is proceeding development of cementitious scagliola using waste stone and waste stone powder. However, quality standard for cementitious scagliola using waste stone and waste stone powder has not been established. So cementitious scagliola using waste stone and waste stone powder has problem of quality assurance. Therefore in this study, developed standard for Evaluating Performance of cementitious scagliola using waste stone and waste stone powder through survey of international standard.

  • PDF

Utilization of Kota stone slurry powder and accelerators in concrete

  • Devi, Kiran;Saini, Babita;Aggarwal, Paratibha
    • Computers and Concrete
    • /
    • v.23 no.3
    • /
    • pp.189-201
    • /
    • 2019
  • Recent advances in the concrete technology are aiding in minimizing the use of conventional materials by substituting by-products of various industries and energy sources. A large amount of stone waste i.e., dust and slurry form both are being originated during natural stone processing and causing deadily effects on the environment. The disposal problem of stone waste can be resolved effectively by using waste in construction industries. In present work, Kota stone slurry powder, as a substitution of cement was used along with accelerators namely calcium nitrate and triethanolamine as additives, to study their impact on various properties of the concrete mixtures. Kota stone slurry powder (7.5%), calcium nitrate (1%) and triethanolamine (0.05%) were used separately as well in combination in different concrete mixtures. Mechanical Strength, modulus of elasticity and electrical resistivity of concrete specimens of different mix proportions under water curing were studied experimentally. The durability properties in terms of strength and electrical resistivity against sulphate and chloride solution attack at various curing ages were also studied experimentally. Results showed that accelerators and Kota stone slurry powder separately enhanced the mechanical strength and electrical resistivity; but, their combination decreased strength at all curing ages. The durability of concrete specimens was also affected under the exposure to chemical attack too. Kota stone slurry powder found to be the most effective material among all materials. Material characterization was also done to study the microstructural properties.

A Study on Characteristics of Leachability and Compressive Strength of Incinerator Fly Ash, Cement and Waste Stone Powder by Solidification (산업폐기물 소각장 비산재의 시멘트 및 폐석분 고형화시 압축강도 및 용출특성)

  • Jung, Ho-Young;Kim, Young-Ju;Kim, Ji-Hoon
    • Journal of Korean Society of Environmental Engineers
    • /
    • v.30 no.5
    • /
    • pp.560-566
    • /
    • 2008
  • In this paper, the solidification behaviour and compressive strength of fly ash, cement, and waste stone powder were studied each separately and with addition of each in different proportions. And also, we assessed stabilizing ability of waste stone powder in cement which was added in fly ash. The particle size of waste stone powder was found smaller than the fly ash and cement particle sizes. Moreover, when mixing all(fly ash, cement, and waste stone powder) showed distinctive crystal structure, and improved stiffness. In case of mixing fly ash, cement and waste stone powder in different proportions, the compressive strength was exceeded to the predicted compressive strength of 10 kgf/cm$^2$. The XRD analysis showed high contents of CaO in fly ash and SiO$_2$ in case of waste stone powder sample. Heavy metal emission experiment showed the 3mg/L of Pb after 14 days of mixing 150 kg/m$^3$ of cement with the 80$\sim$100 kg/m$^3$ of waste stone powder, which is fulfilling the National Waste Management Policy.

The Strength Properties of Concrete Used Stone Powder Sludge as Siliceous Material (실리카질 재료로서 석분 슬러지를 사용한 콘크리트의 강도 특성)

  • Jeong Ji Yong;Choi Sun Mi;Kawg Eun Gu;Choi Se Jin;Lee Seong Yeon;Kim Jin Man
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2005.05a
    • /
    • pp.85-88
    • /
    • 2005
  • The stone powder sludge occurred at aggregate production process is classified the specified waste, so it is disposed by appropriate method. But the problems of the shortage of the disposal-site, the environment pollution, and the increase of disposal cost can be occurred in handling process, therefore the stone powder sludge is required the development of recycling technique. The stone powder sludge includes SiO2 of about $63\%$. This characteristic is important at the production of hardened specimens under condition of hydro-thermal reaction. In this study, we investigated the strength properties of concrete used stone powder sludge as siliceous material. The test results under condition of hydro-thermal reaction shows the two main facts. The first, the stone powder sludge is affected to fluidity because the surface of the stone powder sludge has characteristics of flakily and angularity. The second, weight content of the stone powder sludge, is not effective factor to the properties of strength.

  • PDF

The Basic Study on the Underwater-Hardening Epoxy Mortar Using Stone Powder Sludge (석분슬러지를 이용한 수중 경화형 에폭시 모르타르의 개발에 관한 기초적 연구)

  • Jung Eun-Hye;Kawg Eun-Gu;Bae Dae-Kyung;Cho Sung-Hyun;Bae Kee-Sun;Kim Jin-Man
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • 2005.05b
    • /
    • pp.409-412
    • /
    • 2005
  • Because the underwater structures are subjected to the deterioration according to use environment, it is necessary to repair and reinforce when the durable performances are considered in structures. In generally, epoxy mortar is used to repair materials of underwater concrete. It is divided epoxy and filler which is organized cement and sand. Cement can be replaced by stone powder sludge in waste because the grading of stone powder sludge in drying state has similar to that of cement. As result of study, it is possible that stone powder sludge can be applied for replacement materials of cement in epoxy mortar, because the strength is not different when filler in epoxy mortar is alternated stone powder sludge.

  • PDF

The Engineering Properties of Light Weight Concrete Using Stone Powder Sludge (석분 슬러지를 사용한 경량 콘크리트의 공학적 특성)

  • Jung Ji Yong;Kim Ha Seok;Choi Sun Mi;Choi Se Jin;Lee Seong Yeon;Kim Jin Man
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • 2005.05b
    • /
    • pp.457-460
    • /
    • 2005
  • The stone powder sludges, which are occurred in aggregate production company, have classified the specified waste, so taking place the environment pollution and the disposal cost. In this causes, the stone powder sludge is required the development of recycling technique. This study concerned with the using possibility of stone powder sludge on light weight concrete. We acquired the fundamental date on recycling technique of stone sludges, by hydro-thermal reaction. The results shows that it is possible to develop the light weight concrete, having various range of properties according to the content of foam.

  • PDF

An Experimental Study on Properties of Light-Weight Foamed Concrete Using the Waste Concrete Powder (폐콘크리트 미분을 사용한 경량기포콘크리트의 특성에 관한 실험적 연구)

  • Choi, Hun-Gug;Kim, Jae-Won;Seo, Jung-Pil;Lee, Jung-Goo;Kang, Cheol;Kim, Jin-Man
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2007.04a
    • /
    • pp.75-78
    • /
    • 2007
  • The recycling program about waste concrete is being progressed to national research. But research on waste concrete powder which is occurred in control process of concrete powder is not enough. Waste concrete powder includes in $SiO_2,\;Al_2O_3$, and CaO so that the create of tobermorite is possibile through Hydrothermal Syntesis Reaction. Tobermorite have an advantage of high strength, sulphuric acid resistance and the lower drying shrinkage. Accordingly, this study investigate in properties of light-weight foamed concrete made with waste concrete powder. As a results, light-weight foamed concrete made with waste concrete powder is the higher than stone powder sludge of density and porosity, and the tower compressive strength. Therefore, it is thought that light-weight foamed concrete using waste concrete powder is possible.

  • PDF

Fabrication and Mechanical Properties of the Hybrid Composites Filled with Waste Stone and Tire Powders (폐석분-폐타이어 분말 충전 혼성복합재료의 제조 및 기계적 특성)

  • 황택성;이승구;차기식
    • Polymer(Korea)
    • /
    • v.25 no.6
    • /
    • pp.774-781
    • /
    • 2001
  • In order to reuse the waste matters, the polyester hybrid composites were fabricated with the waste stone (WSP) and waste tire (WTC). Before mixing, the waste fillers were treated with the silane coupling agent [${\gamma}$-methacryloxy propyl trimethoxy silane(${\gamma}$-MPS)] for enhancing the dispersion of the fillers and interfacial bonding with polymer matrix. Mechanical properties and morphologies of the resulted hybrid composites were investigated with the filler content. The hybrid composites containing surface treated fillers have high initial thermal decomposition temperature and low weight loss compared to the untreated one. The highest mechanical properties of composites were obtained with the ${\gamma}$-MPS (2 wt%) treated fillers. The porosity of composite increased with the content of organic filler which can be reduced by the silane surface treatment of fillers. The pore size distribution of the composites varied with the waste filler content.

  • PDF

A Study on Development of a Liner Manufactured by Mine Wastes and Polymer (광산폐기물과 폴리머를 이용한 Liner 개발에 관한 연구)

  • 진호일
    • Economic and Environmental Geology
    • /
    • v.33 no.2
    • /
    • pp.139-146
    • /
    • 2000
  • Development of an effective liner by utilization of the tailings frm the Imcheon mine and polymer has been tried. The tailings piled in the Imcheon mine, whose true specific gravity is about 2.86, are composed mainly of quartz, alkali-feldspar, muscovite and pyrite, and mostly (93.7% in volume) coarser than sand grain size (50${\mu}{\textrm}{m}$). Strength, leaching and permeability tests have been performed on the test specimens of polymer concrete manufactured with various mixing proportions of tailings, unsaturated polyester resins(UPR), calcium carbonates, stone powder sludges and granite soils. Polymer concrete specimens with stone powder sludges or granite soils as fillers and aggregates indicate 2.5 to 3 fold higher flexural and compressive strengths and lower permeabilities than those with calcium carbonates, which shows their usability as a waterproof liner. Also, the polymer concrete liner with stone powder sludge fillers is more advisable in aspects of utilization of waste sludges than that with other fillers.

  • PDF

Strength properties of non-cement board for drying shrinkage control using industrial by-products (산업부산물을 활용한 건조수축 제어용 무시멘트 보드의 강도특성)

  • Park, Ju-Hwa;Pyeon, Su-Jeong;Lee, Dong-Hoon;Lee, Sang-Soo
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2018.05a
    • /
    • pp.228-229
    • /
    • 2018
  • In the construction industry, we have set goals such as reduction of greenhouse gas emissions and reduction of energy use. In particular, reduction of CO2 emissions in the concrete manufacturing process, reduction of industrial waste and industrial wastes into concrete The zero-emission level of reuse as a resource is under review. On the other hand, the cost of stone is expensive due to small quantity production of domestic stone production in order, it is difficult to carry and construct with heavy material, and it takes long time to construct. In order to solve the shortage of supply and demand of natural stone, various kinds of stone powder, artificial stone made by putting stone texture on the surface of mortar or concrete, fiber reinforced plate, tiles and the like are increasingly used. In this study, the artificial stone using slag and recycled aggregate instead of natural stone was fabricated and the strength characteristics were evaluated for its applicability and feasibility.

  • PDF