Lightweight dense/porous bi-layered ceramic tiles prepared by double pressing

Novais, Rui M.; Seabra, M.P.; Labrincha, J.A.

doi:10.1016/j.jmatprotec.2014.09.010

Cited by 16 publications

(4 citation statements)

References 18 publications

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“…An inverse correlation between porosity and compressive strength has been widely reported (Gibson and Ashby, 1997;Novais et al, 2015;Rice, 1996). Indeed, a significant decrease in the compressive strength of geopolymers (see Table 3) when the porosity increases (samples with increasing H 2 O 2 levels) was observed.…”

Section: Influence Of Hydrogen Peroxide Contentmentioning

confidence: 51%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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a b s t r a c tNowadays the stunning volume of generated wastes, the exhaustion of raw materials, and the disturbing greenhouse gases emission levels show that a paradigm shift is mandatory. In this context, the possibility of using wastes instead of virgin raw materials can mitigate the environmental problems related to wastes, while reducing the consumption of the Earth's natural resources. This innovative work reports the incorporation of unexplored waste glass coming from end of life fluorescent lamps into geopolymers.The influence of the waste glass incorporation level, NaOH molarity and curing conditions on the microstructure, physical and mechanical properties of the geopolymers was evaluated. Results demon strate that curing conditions are the most influential factor on the geopolymer characteristics, while the NaOH molarity is less important. Geopolymers containing 37.5% (wt) waste glass were successfully produced, showing compressive strength of 14 MPa (after 28 days of curing), suggesting the possibility of their use in non structural applications.Porous waste based geopolymers for novel applications were also fabricated.

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Section: Influence Of Hydrogen Peroxide Contentmentioning

confidence: 51%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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“…BrasiPlac 12 and Ecoplac 13 produce cementitious plates for ventilated façade applications, with data on bending strength at the saturated condition of 5 MPa. Novais, Seabra and Labrincha 27 investigated the production process of bi‐layered ceramics tiles, formed from two layers with different densities—dense and porous—and with adjustable thickness and found a value of 60 MPa of bending strength for ~26% of total porosity. Pizzatto et al 28 developed a porous ceramic plate using glass residue and lime mud and obtained bending strength of 8.6 ± 1.9 MPa for a porosity of 39.7 ± 1.5%.…”

Section: Resultsmentioning

confidence: 99%

Thermal evaluation of the use of porous ceramic plates on ventilated façades – Part I: Effect of composition and firing temperature on porosity and bending strength

Pizzatto

Angioletto

et al. 2021

Int J Applied Ceramic Tech

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The effect of composition and firing temperature on porosity and bending strength of porous ceramic plates for using in ventilated façades were investigated. Two byproducts, basalt and lime mud, were used to obtain porous ceramic plates in accordance with the circular economy concept. Basalt, which is a fine powder‐based byproduct generated from the processing of basaltic rock, was used to replace feldspar as the flux mineral in a ceramic composition. Lime mud, a byproduct of the pulp and paper mill process and containing a high content of calcium carbonate (CaCO3), was incorporated in the ceramic composition to generate pores. The specimens were prepared using three different amounts of lime mud (20, 30, and 40 wt%) and three firing temperatures (900°C, 1000°C, and 1100°C), and their porosity and bending strength were determined. The highest performing specimen (5.1 ± 1.3 MPa bending strength and 42.6 ± 0.5% porosity) was obtained by using 40 wt% of lime mud and a firing temperature of 1100°C with potential for further thermal tests in a ventilated façade in comparison with a commercial porcelain ceramic tile as reference material.

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“…Moreover, porcelain tiles require structural reinforcement. Reducing the density of ceramic plates can overcome part of the limitations of porcelain tiles and improve thermal insulation, which can be increased by more than 20 times depending on porosity 15,21,23 …”

Section: Introductionmentioning

confidence: 99%

“…Thermal insulation is necessary to reduce heat exchanges between the building and the outside, reducing heating and cooling needs and the risk of condensation. Proper thermal insulation favors the reduction of dispersion heat, resulting in energy gain in winter and lower heat absorption in summer, reducing air conditioning costs 23 . Porous, lightest systems can reach a reduction of up to 3°C in the temperature of the environment concerning the outside 25…”

Section: Introductionmentioning

confidence: 99%

Thermal evaluation of the use of porous ceramic plates on ventilated façades—part II: Thermal behavior

Pizzatto

Angioletto

et al. 2021

Int J Applied Ceramic Tech

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The effects of porous ceramic plates on the thermal behavior of ventilated façades were evaluated, and the results are presented herein. Thermal behavior in a ventilated façade of specimens containing 40 wt% of lime mud and a firing temperature of 1100°C was evaluated and compared with a commercial porcelain ceramic tile, which was the reference material. An experimental apparatus was designed to evaluate the thermal performance of the studied ventilated façades. The results revealed that the ventilated façade composed of the studied porous ceramic tiles produced a greater reduction in temperature between the external environmental and the interior of a box representing a building (ΔT5) of 65.7°C, compared with the façade composed of the commercial porcelain ceramic tiles (ΔT5 = 56.0°C) and even the traditional façade (ΔT5 = 49.1°C). Thus, porous ceramic tiles based on byproducts are promising candidates for ventilated façade systems.

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Lightweight dense/porous bi-layered ceramic tiles prepared by double pressing

Cited by 16 publications

References 18 publications

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

Thermal evaluation of the use of porous ceramic plates on ventilated façades – Part I: Effect of composition and firing temperature on porosity and bending strength

Thermal evaluation of the use of porous ceramic plates on ventilated façades—part II: Thermal behavior

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