Effect of quartz sand replacement by agate rejects in triaxial porcelain

Correia, Sivaldo Leite; Dienstmann, Gracieli; Folgueras, Marilena Valadares; Segadães, Ana M.

doi:10.1016/j.jhazmat.2008.06.094

Cited by 26 publications

(18 citation statements)

References 18 publications

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“…This behaviour can be attributed to the fact that the introduction of a waste material disturbs the balance between the typically coarse particles contributed by the non-plastic raw materials (mainly FS) and the colloidal particles contributed by the plastic raw material (clay), as reported elsewhere [45]. However, the RSA fraction contents 0.40 (M2) allowed DBD values close to the minimum acceptable value for this type of ceramic product (> 1.80 g/cm 3 ) to be obtained [46]; Arantes et al also…”

Section: Technical Properties and Statistical Analysissupporting

confidence: 61%

Optimization of the technological properties of porcelain tile bodies containing rice straw ash using the design of experiments methodology

Guzmán

Gordillo

Delvasto

et al. 2016

Ceramics International

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This study examines the effects of replacing fluxing and filler materials with rice straw ash (RSA) in manufacturing porcelain stoneware tile, using the design of experiments (DOE) methodology. The results of the characterization were used to obtain statistically significant, valid regression equations, relating the technological properties of the dried and fired test pieces to the raw materials content in the unfired mixtures. The regression models were analysed in relation to the X-ray diffraction and scanning electron microscopy results and used to determine the most appropriate combinations of traditional raw materials and RSA to produce porcelain stoneware tiles with specific technological properties. The studied range of tile body compositions: clay (40 wt%), feldspar (20-50 wt%), feldspathic sand (5-20 wt%), and RSA (0-25 wt%) was shown to be appropriate for porcelain stoneware tile manufacture.

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Section: Technical Properties and Statistical Analysissupporting

confidence: 61%

Optimization of the technological properties of porcelain tile bodies containing rice straw ash using the design of experiments methodology

Guzmán

Gordillo

Delvasto

et al. 2016

Ceramics International

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show abstract

“…The study by Correia [18] evaluated the possibility of replacing natural sand with agate residue in the production of stoneware tile, in the mass proportion of 15 to 45%. The agate powder was also used in the production of ceramics [19], in the development of urban pavement structures [20], as soil remineralizer [21], and in the production of colored sand through magnetite nanoparticle incorporation [22].…”

Section: Introductionmentioning

confidence: 99%

Production of Aerated Foamed Concrete with Industrial Waste from the Gems and Jewels Sector of Rio Grande do Sul-Brazil

et al. 2017

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Abstract:The use of solid waste for the development of new building materials has been an alternative to reduce environmental impacts through the preservation of natural resources. In this context, this paper evaluates the possibility of using agate gemstone waste, called rolled powder, which basically consists of silica (SiO 2 ), in the manufacture of aerated foamed concrete blocks completely replacing the natural sand. Preformed foam was used as the air entrained by mechanical stirring with a mixture of natural foaming agents derived from coconut. To produce test specimens, the water/cement ratio and foam concentrations were varied, with three and four levels, respectively. The specimens were left for 28 days at room temperature to be cured, and then underwent analysis to determine their compressive strength, density, and the distribution of air-voids. The experiments demonstrated that the best water/cement ratio was 1.28 for 18% (of total solid mass) addition of foam, which generated a sample with a density of 430 kg/m 3 , and a compressive strength of 1.07 MPa. The result for compressive strength is 11% smaller than the requirements of the Brazilian standard (NBR 13438) for autoclaved aerated concrete blocks, but the results are promising.

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“…e modelling of a given property using the design of mixture experiments is becoming common practice [9][10][11][12][13][14][15][16][17] and was proven, in all cases reported, to lead to greater e ciency and con dence in the results obtained, and to be less demanding in time and both material and human resources.…”

Section: Introductionmentioning

confidence: 99%

Property Optimisation of EPDM Rubber Composites Using Mathematical and Statistical Strategies

Correia

Palaoro

Segadães

2017

Advances in Materials Science and Engineering

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is paper describes a study in which EPDM-based rubber composites were investigated aiming at developing formulations subjected to restrictions on cost and the properties of the material. e contents of components other than calcium carbonate, para nic oil, and CBS vulcanising accelerator, as well as additives and processing conditions, were kept constant. Fractional factorial design coupled with computational numerical optimisation was used to minimise the number of mixtures. e results demonstrate that statistical design of experiments and particle swarm optimisation (PSO) algorithms are promising methods to design composition variables. Mixture costs as low as 1.92 US$/kg can be achieved in compositions containing, for example, 107 phr of calcium carbonate, 95 phr of para nic oil, and 1.13 phr of CBS accelerator. e corresponding composite propertypredicted values were 66.8 Shore A for hardness, tensile strength of 7.8 MPa, 570.8% elongation at break, and 23.0% rebound resilience. is demonstrates that, in this way, the desired product with speci ed characteristics can be comfortably manufactured at minimum cost.

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Effect of quartz sand replacement by agate rejects in triaxial porcelain

Cited by 26 publications

References 18 publications

Optimization of the technological properties of porcelain tile bodies containing rice straw ash using the design of experiments methodology

Optimization of the technological properties of porcelain tile bodies containing rice straw ash using the design of experiments methodology

Production of Aerated Foamed Concrete with Industrial Waste from the Gems and Jewels Sector of Rio Grande do Sul-Brazil

Property Optimisation of EPDM Rubber Composites Using Mathematical and Statistical Strategies

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