Artificial Marble

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Euihwan Hwang - One of the best experts on this subject based on the ideXlab platform.

  • comparison of mechanical and physical properties of sbr polymer modified mortars using recycled waste materials
    Journal of Industrial and Engineering Chemistry, 2008
    Co-Authors: Euihwan Hwang, Young Soo Ko
    Abstract:

    Abstract Polymer modified mortars using either recycled waste concrete fine aggregate (WCFA) or Artificial Marble waste fine aggregate (AMWFA) were prepared and investigated for the purpose of feasibility of recycling. The replacement ratio of recycled materials also changed to investigate the effect of it on mechanical and physical properties. The water–cement ratio was increased as the replacement ratio of either AMWFA or WCFA in mortar in the absence of styrene-butadiene rubber (SBR) latex. The presence of SBR for both WCFA and AMWFA gave the increase of the air content. The compressive strength decreased in the presence of SBR. The higher replacement ratio of WCFA and AMWFA lowered the compressive strengths significantly. The compressive strength of AMWFA was significantly lowered after the hot water resistance test, whereas that of WCFA was slightly increased after the hot water resistance test. As the replacement ratio of either WCFA or AMWFA increased, the flexural strength decreased as well as compressive strength.

  • effect of polymer cement modifiers on mechanical and physical properties of polymer modified mortar using recycled Artificial Marble waste fine aggregate
    Journal of Industrial and Engineering Chemistry, 2008
    Co-Authors: Euihwan Hwang, Young Soo Ko, Jongki Jeon
    Abstract:

    Abstract Various polymer-modified mortars using recycled Artificial Marble waste fine aggregate (AMWFA) were prepared and investigated for the purpose of feasibility of recycling. Styrene–butadiene rubber (SBR) latex and polyacrylic ester (PAE) emulsion were employed as polymer modifier, and compared each other. The replacement ratio of AMWFA was also changed to investigate the effect of it on physical properties. Adding polymer cement modifier into mortar reduced water–cement ratio, and PAE was the more effective polymer cement modifier to reduce water–cement ratio than SBR. PAE emulsion-modified mortar increased the air content entrained as the proportion of PAE was increased. There was little difference in water absorption between SBR latex and PAE emulsion. The compressive strength decreased in the presence of polymer cement modifiers compared to that of no polymer cement modifiers, but the compressive strength of 20% of polymer–cement ratio was higher than that of 10%. After the hot water resistance test, both compressive strength and flexural strength were decreased.

  • comparison of physical properties of pae polymer modified mortars from recycled waste Artificial Marble and waste concrete fine aggregates
    Journal of Industrial and Engineering Chemistry, 2007
    Co-Authors: Euihwan Hwang, Taeksung Hwang
    Abstract:

    In this study, we compared the properties of PAE (polyacrylic ester) polymer-modified mortars pre- pared from recycled waste Artificial Marbles and waste concrete fine aggregates. We used PAE emulsion as a polymer modifier; 30 types of specimens of polymer-modified mortars were prepared by varying the pro- portions of the polymer modifier and the recycled fine aggregates. To evaluate the properties of the poly- mer-modified mortars, we determined the air contents, water-cement ratios, unit weights, water absorptions, compressive strength, flexural strength, hot water resistance, and pore volumes. The compressive and flexural strengths of the specimens decreased upon increasing the replacement ratios of the recycled fine aggregates, while they increased upon increasing the additive amount of the polymer modifiers. For the specimens that were prepared from waste Artificial Marble, the compressive and flexural strengths of the specimens, de- termined after hot water resistance testing, were decreased significantly. The pore volumes, determined after hot water resistance testing had decreased.

Young Soo Ko - One of the best experts on this subject based on the ideXlab platform.

  • comparison of mechanical and physical properties of sbr polymer modified mortars using recycled waste materials
    Journal of Industrial and Engineering Chemistry, 2008
    Co-Authors: Euihwan Hwang, Young Soo Ko
    Abstract:

    Abstract Polymer modified mortars using either recycled waste concrete fine aggregate (WCFA) or Artificial Marble waste fine aggregate (AMWFA) were prepared and investigated for the purpose of feasibility of recycling. The replacement ratio of recycled materials also changed to investigate the effect of it on mechanical and physical properties. The water–cement ratio was increased as the replacement ratio of either AMWFA or WCFA in mortar in the absence of styrene-butadiene rubber (SBR) latex. The presence of SBR for both WCFA and AMWFA gave the increase of the air content. The compressive strength decreased in the presence of SBR. The higher replacement ratio of WCFA and AMWFA lowered the compressive strengths significantly. The compressive strength of AMWFA was significantly lowered after the hot water resistance test, whereas that of WCFA was slightly increased after the hot water resistance test. As the replacement ratio of either WCFA or AMWFA increased, the flexural strength decreased as well as compressive strength.

  • effect of polymer cement modifiers on mechanical and physical properties of polymer modified mortar using recycled Artificial Marble waste fine aggregate
    Journal of Industrial and Engineering Chemistry, 2008
    Co-Authors: Euihwan Hwang, Young Soo Ko, Jongki Jeon
    Abstract:

    Abstract Various polymer-modified mortars using recycled Artificial Marble waste fine aggregate (AMWFA) were prepared and investigated for the purpose of feasibility of recycling. Styrene–butadiene rubber (SBR) latex and polyacrylic ester (PAE) emulsion were employed as polymer modifier, and compared each other. The replacement ratio of AMWFA was also changed to investigate the effect of it on physical properties. Adding polymer cement modifier into mortar reduced water–cement ratio, and PAE was the more effective polymer cement modifier to reduce water–cement ratio than SBR. PAE emulsion-modified mortar increased the air content entrained as the proportion of PAE was increased. There was little difference in water absorption between SBR latex and PAE emulsion. The compressive strength decreased in the presence of polymer cement modifiers compared to that of no polymer cement modifiers, but the compressive strength of 20% of polymer–cement ratio was higher than that of 10%. After the hot water resistance test, both compressive strength and flexural strength were decreased.

Taeksung Hwang - One of the best experts on this subject based on the ideXlab platform.

  • comparison of physical properties of pae polymer modified mortars from recycled waste Artificial Marble and waste concrete fine aggregates
    Journal of Industrial and Engineering Chemistry, 2007
    Co-Authors: Euihwan Hwang, Taeksung Hwang
    Abstract:

    In this study, we compared the properties of PAE (polyacrylic ester) polymer-modified mortars pre- pared from recycled waste Artificial Marbles and waste concrete fine aggregates. We used PAE emulsion as a polymer modifier; 30 types of specimens of polymer-modified mortars were prepared by varying the pro- portions of the polymer modifier and the recycled fine aggregates. To evaluate the properties of the poly- mer-modified mortars, we determined the air contents, water-cement ratios, unit weights, water absorptions, compressive strength, flexural strength, hot water resistance, and pore volumes. The compressive and flexural strengths of the specimens decreased upon increasing the replacement ratios of the recycled fine aggregates, while they increased upon increasing the additive amount of the polymer modifiers. For the specimens that were prepared from waste Artificial Marble, the compressive and flexural strengths of the specimens, de- termined after hot water resistance testing, were decreased significantly. The pore volumes, determined after hot water resistance testing had decreased.

Ruben Jesus Sanchez Rodriguez - One of the best experts on this subject based on the ideXlab platform.

  • physical and mechanical evaluation of Artificial Marble produced with dolomitic Marble residue processed by diamond plated bladed gang saws
    Journal of materials research and technology, 2018
    Co-Authors: Tcharllis Joao Da Cunha Demartini, Ruben Jesus Sanchez Rodriguez, Fernanda Souza Silva
    Abstract:

    Abstract The production of Artificial stone from the agglutination of the epoxy resin fine waste can be a viable alternative from technical, economic and ecological points of views. The residue derives from the dolomitic Marble produced by diamond-plated bladed gang-saws and it is usually discarded. With this new application, there is value added to the residue, reducing the consequent environmental impact. The main objective of this research is to evaluate the physical and mechanical properties of an Artificial Marble produced through vacuum vibro-compression. With this purpose, stone plates were produced, using appropriate tools, characterized by a distribution of 85% of residual particle weight and 15% of epoxy system. The material was manufactured with the following conditions for 20 (twenty) minutes, compacting pressure of 0.5 MPa and temperature of 90 °C. Later on, the samples were characterized by density, water absorption, porosity, flexural strength, compressive strength and scanning electron microscopy. The result was an Artificial Marble produced applying vacuum vibro-compression with water absorption levels below 0.06%, flexural strength of 33.93 MPa and uniaxial compression of 96.49 MPa, thus indicating residual particles and epoxy resin grip at satisfactory levels.

  • microstructure and mechanical properties of Artificial Marble
    Construction and Building Materials, 2017
    Co-Authors: Carlos Eduardo Gomes Ribeiro, Ruben Jesus Sanchez Rodriguez, Eduardo Atem De Carvalho
    Abstract:

    Abstract Artificial Marble (AAM) was manufactured from waste material from dolomitic Marble slabs. Fragments of Marble slabs (waste) were processed by resin transfer molding (RTM) and vacuum vibrocompression (VVC) technologies using unsaturated polyester resin (UPR) to obtain AAMs with different microstructures. The AAM-RTM and AAM-VVC produced with 13 to 15%w/w UPR have different physical properties. The AAM-VVC had a higher density (2.38 g.cm −3 ) and lower porosity (0.39 wt%) and exhibited a higher tan δ intensity peak in an oscillatory mechanical test, associated with interfacial friction that is characteristic of the microstructure observed in the fracture region of AAM-VVC samples. The AAM-VVC also exhibited a higher bending modulus (21.5 GPa) and compressive modulus (3.9 GPa), between that of natural dolomitic Marble and UPR, which were characteristic of this more compact AAM. The less dense microstructure of AAM-RTM explains the smaller bending modulus (0.93 GPa) and compressive modulus (0.63 GPa) compared to AAM-VVC. The AAM-RTM and AAM-VVC microstructures and associated properties enable various applications for these alternative materials in the construction industry, providing a means of reducing the amount of stone waste and providing an economic value to Marble waste.

  • influence of compaction pressure and particle content on thermal and mechanical behavior of Artificial Marbles with Marble waste and unsaturated polyester
    Materials Research-ibero-american Journal of Materials, 2015
    Co-Authors: Carlos Eduardo Gomes Ribeiro, Ruben Jesus Sanchez Rodriguez
    Abstract:

    Compact Artificial stones are widely used in buildings around the world, and the expected demand to the next years is increasing. In this study, stone fragments from Marble processing are recycled as raw materials for produce compact Artificial stones using compaction in a vacuum environment (100 mm Hg). Crushed Marble waste (80 and 85%wt) are mixed with unsaturated polyester resin as binder. Materials were processed under compaction pressures of 1 and 10 MPa, for 20 minutes at 90 °C. Artificial Marble with flexural ultimate strength of 25 MPa, water absorption below 0.2% and homogeneous particles distribution were obtained to materials produced with 80%wt of Marble particles. To Artificial Marbles with 85%wt of particles, lower flexural ultimate strength and higher water absorption were observed (18 MPa and 0.4% respectively). In addition, the greater compaction pressure used improves slightly values obtained in 3 points bending test. Furthermore, tangent delta peaks at 115 °C were observed to evaluated Artificial Marbles.

Hongde Jiang - One of the best experts on this subject based on the ideXlab platform.

  • On Improving Full-coverage Effusion Cooling Efficiency by Varying Cooling Arrangements and Wall Thickness in Double Wall Cooling Application
    Journal of Heat Transfer-transactions of The Asme, 2019
    Co-Authors: Weihong Li, Xunfeng Lu, Xueying Li, Hongde Jiang
    Abstract:

    Overall cooling effectiveness was determined for a full-coverage effusion cooled surface which simulated a portion of a double wall cooling gas turbine blade. The overall cooling effectiveness was measured with high thermal-conductivity Artificial Marble using infrared thermography. The Biot number of Artificial Marble was matched to real gas turbine blade conditions. Blowing ratio ranged from 0.5 to 2.5 with the density ratio of DR = 1.5. A variation of cooling arrangements, including impingement-only, film cooling-only, film cooling with impingement, and film cooling with impingement and pins, as well as forward/backward film injection, was employed to provide a systematic understanding on their contribution to improve cooling efficiency. Also investigated was the effect of reducing wall thickness. Local, laterally averaged, and area-averaged overall cooling effectiveness were shown to illustrate the effects of cooling arrangements and wall thickness. Results showed that adding impingement and pins to film cooling, and decreasing wall thickness increase the cooling efficiency significantly. Also observed was that adopting backward injection for thin full-coverage effusion plate improves the cooling efficiency.

  • On Improving Full-Coverage Effusion Cooling Efficiency by Varying Cooling Arrangements and Wall Thickness in Double Wall Cooling Application
    Volume 5A: Heat Transfer, 2018
    Co-Authors: Weihong Li, Xunfeng Lu, Xueying Li, Hongde Jiang
    Abstract:

    Overall cooling effectiveness was determined for a full-coverage effusion cooled surface which simulated a portion of a double wall cooling gas turbine blade. The overall cooling effectiveness was measured with high thermal-conductivity Artificial Marble using infra-red thermography. The Biot number of Artificial Marble was matched to real gas turbine blade conditions. Blowing ratio ranged from 0.5 to 2.5 with the density ratio of DR = 1.5. A variation of cooling arrangements, including impingement-only, film cooling-only, film cooling with impingement and film cooling with impingement and pins, as well as forward/backward film injection, were employed to provide a systematic understanding on their contribution to improve cooling efficiency. Also investigated was the effect of reducing wall thickness. Local, laterally-averaged, and area-averaged overall cooling effectiveness were shown to illustrate the effects of cooling arrangements and wall thickness. Results showed that adding impingement and pins to film cooling, and decreasing wall thickness increase the cooling efficiency significantly. Also observed was that adopting backward injection for thin full-coverage effusion plate improves the cooling efficiency.