• Title/Summary/Keyword: Waste glass/cement

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Expansion Properties of Mortar Using Waste Glass and Industrial By-Products (폐유리와 산업부산물을 사용한 모르터의 팽창특성)

  • 박승범;이봉춘
    • Journal of the Korea Concrete Institute
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    • v.14 no.3
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    • pp.440-448
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    • 2002
  • Waste glass has been increased with the development of industry. The utilization of waste glass for concrete can cause the concrete to be cracked and to be weakened due to an expansion by alkali-silica reaction(ASR). In this study, ASR expansion and properties of strength were analyzed in terms of waste glass color(amber, emerald-green), industrial by-products(ground granulated blast-furnace slag, fly ash), and the content of industrial by-products for reducing ASR expansion caused by the waste glass. The possibility of using glass ground as pozzolanic properties was also analyzed. From the result of this study, the pessimum size of waste glass was 2.5∼1.2 mm regardless of waste glass color. And the smaller than 2.5∼1.2 mm waste glass is, the more decreasing expansion of ASR is. Also, the combination of waste glass with industrial by-products have an effect on reducing the expansion and strength loss caused by ASR between the alkali in the cement paste and the silica in the waste glass, and the glass ground of less than 0.075 mm is applicable as a pozzolanic material.

Mechanical Properties of the artificial Stone According to the Ternary System Inorganic Composite and Waste Glass and Fiber type (섬유의 종류에 따른 폐유리와 무기결합재 인조석재의 역학적 특성)

  • Yoo, Yong Jin;Kim, Heon Tae;Lee, Sang Soo;Song, Ha Young
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.05a
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    • pp.321-322
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    • 2013
  • Recently, the exhaustion of resource and environmental damage is serious due to the global warming because of the CO2 exhaust and each type the natural aggregate picking described below. meanwhile, The rest is the actual condition gone to the dumping ground that there is nearly no use which the waste glass can recycle and it is recycled. This research applied the waste glass as the cement substitute material the inorganic binder and coares aggregate substitute material. It utilizes the substitute material of the cement according to it and natural aggregate and tries to develop the environment-friendly artificial stone. The inorganic binder used the blast furnace slag, red mud, and fly ash. The straight type steel fiber, PVA fiber, PA fiber, and cellulosic fiber were used with a kind of fiber. As to the experimental item according to it, the compressive strength is the flexural strength and compressive strength.

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Mechanical and durability properties of concrete incorporating glass and plastic waste

  • Abdelli, Houssam Eddine;Mokrani, Larbi;Kennouche, Salim;Aguiar, J.L. Barroso de
    • Advances in concrete construction
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    • v.11 no.2
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    • pp.173-181
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    • 2021
  • The main objective of this work is to contribute to the valorization of plastic and glass waste in the improvement of concrete properties. Waste glass after grinding was used as a partial replacement of the cement with a percentage of 15%. The plastic waste was cut and introduced as fibers with 1% by the total volume of the mixture. Mechanical and durability tests were conducted for various mixtures of concrete as compressive and flexural strengths, water absorption, ultrasonic pulse velocity, and acid attack. Also, other in-depth analyses were performed on samples of each variant such as X-ray diffraction (XRD), thermogravimetric analysis (DSC-TGA), and scanning electron microscope (SEM). The results show that the addition of glass powder or plastic fibers or a combination of both in concrete improved in the compression and flexural strengths in the long term. The highest compressive strength was obtained in the mix which combines the two wastes about 26.72% of increase compared to the control concrete. The flexural strength increased in the mixture containing the glass powder. Therefore, the mixture with two wastes exhibits better resistance to aggressive sulfuric acid attack, and incorporating glass powder improves the ultrasonic pulse velocity.

Properties of Non-cement Artificial Stone Utilizing the Waste Porcelain and Waste Glass (폐유리 및 폐자기를 활용한 무시멘트계 인조석재의 특성)

  • Kim, Tae-Hyun;Lee, Seung-Ho;Lee, Sang-Soo;Song, Ha-Young
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.4 no.2
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    • pp.136-142
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    • 2016
  • As the rapid industrialization and modernization progress of the world it is becoming a fast-paced environment pollution. And, dust or environment pollution to solve reckless diggings of natural aggregate cause a serious problem. This study was used a Blast Furnace Slag and Combined Heat and Power Plant of Fly Ash as a cement substitute to reduce $CO_2$ emissions during cement production, this study intend to suggest it's result as basic data 'Properties of Artificial Stone interior or exterior materials type utilizing industrial by-product and waste resource' utilizing Waste Porcelain and Waste Glass. As a result, it was high strength that matrix added the Combined Heat and Power Plant of Fly Ash of addition ratio 40%. Also, pre-experiment was conduct as mixing ratio of waste glass, waste porcelain on the basis of the preceding experiment, proper mixing ratio was judged that proper of waste glass, waste porcelain was mixing ratio 60, 70 (%) of appeared surface aggregate ratio more than 45%.

Alkali-Silica Reaction of Mortar Containing Waste Glass Aggregates (폐유리 골재를 혼입한 모르터의 알칼리 실리카 반응에 관한 연구)

  • 박승범;이봉춘;권혁준
    • Journal of the Korea Concrete Institute
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    • v.13 no.3
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    • pp.213-220
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    • 2001
  • Incorporation of wastes glass aggregate in mortar may cause crack and this may result in the strength reduction due to alkali-silica reaction(ASR) and expansion. The purposes of this study were to investigate the properties of alkali-silica expansion and strength loss through a series of experiments which had a main experimental variables such as waste glass aggregate contents, glass colors, fiber types, and fiber contents. The steel fibers and polypropylene fibers were used for constraining the ASR expansion and mortar cracking. From the result, green waste glass was more suitable than brown one because of low expansion. And in this accelerated ASTM C 1260 test of waste glass, pessimum content can not be found. Also, when used the fibers with waste glass, there is an effect on reduction of expansion and strength loss due to ASR between the alkali in the cement paste and the silica in the waste glass. Specially, adding 1.5 vol.% of steel fiber to 20% of waste glass, the expansion ratio was reduced by 40% and flexural strength was developed by up to 110% comparing with only waste glass(80$\^{C}$ H$_2$O curing).

Performance Evaluation of Admixture for Durability Improvement of Shielding Materials Used Waste Glass as Fine Aggregate (폐유리를 잔골재로 사용한 차폐채움재의 내구성 개선을 위한 혼화재료의 성능평가)

  • Hwang, Byoung-Il;Kim, Hyo-Jung;Song, Yong-Soon;Yi, Seong-Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.23 no.2
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    • pp.20-27
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    • 2019
  • Compared to the development and manufacturing technology of electronic goods, the development of waste glass recycling technology is relatively insufficient, leading to the acceleration of waste of resources and environmental pollution. Although waste glass recycling technology is being actively developed overseas, waste glass recycling technology is insufficient in Korea, leading to the illegal dumping or burial of waste glass. Waste glass has been confirmed to have pozzolan reaction potential when having hydration reaction with cement. Waste glass is also reported to be effective in reducing bleeding and inhibiting the development of hydration heat by improving the physical properties of concrete and the rheology properties of fresh concrete. Therefore, this paper analyzed the strength characteristics and the effect of alkalic-silica reaction on the expansion of shielding concrete that used waste glass as fine aggregate. Where, suitable admixture materials were used as a measure to suppress the expansion.

Effects of supplementary cementitious materials on drying shrinkage of cement mortar - a comparative study (혼화재에 따른 모르타르 건조수축-비교 연구)

  • Choi, Hoon Jae;Cui, Chengkui;Park, Chung-Hoon;Kim, Baek-Joong;Yi, Chongku;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.158-159
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    • 2013
  • In this study, effects of supplementary cementitious materials(fly ash, blast furnace slag and waste glass) on drying shrinkage of cement mortar were compared and evaluated. The results showed drying shrinkage of cement mortar using blast furnace slag and waste glass is larger than shrinkage due to capillary pressure, while using fly ash is smaller.

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Feasibility Study on the Synthesis of Wollastonite Using Waste Glass and Sand (폐유리와 모래를 활용한 Wollastonite 합성 예비 실험)

  • Pae, Junil;Kwon, Minkyoung;Moon, Juhyuk
    • Cement Symposium
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    • s.49
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    • pp.23-24
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    • 2022
  • Wollastonite is a promising sustainable cement mineral which directly reacts with carbon dioxide to form calcium carbonate and silica gel. Due to the carbon dioxide reaction, it can be undoubtly one of materials for carbon capture, utilization, and storage. In this study, feasibility study for synthesizing the wolloastonite crystal using sand and waste glass was performed instead of using reactive but expensive silica fume for silica source.

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Effect of Replacing Fine Aggregate by Cathode-Ray Tube(CRT) Waste Glass on Gamma-ray Shielding Properties of Cement Mortar Specimen (폐 브라운관(CRT) 유리의 잔골재 대체가 모르타르 시험체의 감마선 차폐에 미치는 영향)

  • Choi, Yoon-Suk;Lee, Seon-Min;Kim, Tae-Sang;Kim, Il-Sun;Yang, Eun-Ik
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.23 no.7
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    • pp.172-180
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    • 2019
  • In this study, the microstructure and gamma-ray shielding efficiency of CRT glass mortar specimen were evaluated with replacement ratio and material properties. The results show that as the replacement ratio of CRT waste glass increases, the volume of pores with diameters below 50 nm and above 400 nm is increased. Also, the half-value layer of CRT glass mortar decreased with the increasing of linear attenuation coefficient. In addition, compressive and flexural strength were reduced when CRT waste glass was replaced as the fine aggregate, but the mechanical performance of CRT mortar specimen could be obtained by substitution of the mineral admixture.

Physical Properties of Artificial Interior stone Using Waste Resources (폐자원을 활용한 내장용 인조석재의 물리적 특성)

  • Yoo, Yong-Jin;Lee, Sang-Soo;Song, Ha-Young
    • Journal of the Korea Institute of Building Construction
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    • v.14 no.3
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    • pp.237-243
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    • 2014
  • The environmental problem is serious due to global warming In a concrete industry, the effort to reduce the problem of the destruction of environment arising from the indiscriminate use of limestone that is the raw material of cement and aggregate and the exhaustion of resources are continually emphasized In this research, the waste porcelain and waste glass that are the natural aggregate substitute materials were mixed and were applied. In addition, the magnesia phosphate composite and fly ash are mixed with a cement substitute material and the properties of the artificial stone was examined. Density, water absorption, rate of aggregate on the surface, compressive strength, and flexural strength were performed. As a result of the test, it is that waste glass with 60% and waste porcelain with 70% are the most excellent mix to produce the artificial stone.