Effects of the size of expanded polystyrene as a pore-former on the properties of insulating firebricks

Ramezani, A.; Nemat, S.; Emami, S.M.

doi:10.1016/j.ceramint.2018.01.072

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…Other models included application of Monte Carlo methods to simulate the flow of heat across the pores . Recently, the optimization of porosity and pore size in PS containing firebricks was conducted by Ramezani et al who found out that, for the same amount of porosity, samples with low sized pores tend to display higher mechanical strength then those with higher size. A fractal analysis of pore structure and its effect on conductivity was also recently reported by Liu et al They elaborated a relation indicating the effect of pore size and sphericity on thermal shock resistance of porous alumina refractories, depending on the fractal dimension of pores.…”

Section: Introductionmentioning

confidence: 55%

The use of bagasse in the preparation of fireclay insulating bricks

Hassan

Moselhy

Abadir

2018

Int J Applied Ceramic Tech

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Acidic insulating refractory bricks were prepared by mixing kaolin and grog with polystyrene (PS) beads up to 1.5% and bagasse up to 5% (by weight). This latter is a fibrous waste residue from the sugar cane industry. The bricks were dried and fired at 1250°C in a cycle lasting for 16 hours. The bricks were tested for water absorption, porosity, bulk density, cold crushing strength and thermal conductivity at three different temperatures (400, 600, and 800°C). It was concluded that bricks containing 1% PS and 3% bagasse abided by ASTM C155‐97 for C‐30 type insulating refractories with a bulk density of 1.01 g/cm3, a cold crushing strength of 4.08 MPa, and a thermal conductivity of 0.37 W/K/m at 800°C.

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Section: Introductionmentioning

confidence: 55%

The use of bagasse in the preparation of fireclay insulating bricks

Hassan

Moselhy

Abadir

2018

Int J Applied Ceramic Tech

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“…These should be from the stem of rice straw, considering a typical structure of rice stem . The incorporation of such tube structures in the 3-dimensional composites would contribute to the developments of lightweight or insulating materials because of their ability to contain gas like polystyrene . Aligned and ordered micropores were also visualized, which could be related to the destruction of silica layers of rice straw .…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Biomass Composites Using the Maillard Reaction Products of Molasses as a Binder

Oh,

Phong,

Noh

et al. 2023

ACS Food Sci. Technol.

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Here we found that viscoelastic features of molasses facilitate paste formation with wheat bran and rice straw powders, and a subsequent heat treatment results in significant hardening with dehydration and the Maillard reaction. This simple two-step process (i.e., blending and heating) was beneficial to fabricate diverse 3-dimensional shapes. The hardening process displayed around 3.5, 0.5, and 2.5 MPa as compressive, tensile, and flexural strengths, respectively, when a 1:1 (v/v) ratio of molasses and the biomass powders was used. Instrumental analyses on molasses before and after the heat process and hardening with a model compound (i.e., gallic acid) revealed that structural transformations of molasses based on the Maillard reactions and concomitant coupling reactions with lignin or polyphenolic moieties from the biomass are crucial for the phenomenon. Practical functionalities such as antibacterial, nonbiodegradable, and virus particle-adsorbing properties potentially attributable to the lignin and melanoidin contents were also exhibited with the composites.

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“…To this end, research is being conducted into the possible use of EPS as an additive in the production of construction materials such as lightweight mortars [ 13 ] or bricks. Although little research has yet been conducted on the use of EPS, promising results have been obtained in various studies in which samples were produced using varying amounts of additive and different firing temperatures [ 14 ], different percentages and sizes [ 15 ] or by mixing EPS with other materials [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of Expanded Polystyrene and Olive Stones in the Manufacture of Lightweight Bricks: Evaluation of Their Properties and Durability

Gómez

Cultrone

2023

Materials

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This paper studies the effects of using 20, 40 and 60% vol. of either expanded polystyrene (EPS) or olive stones as additives in the manufacture of handmade bricks. The bricks were made using clayey earth from Viznar (Spain) and were fired at 950 °C. The effects of the additives on the mineralogical, textural and physical properties of the fired bricks were analysed, focusing mainly on possible changes in their pore system, thermal insulation, compressive strength, colour and salt crystallisation resistance. From a mineralogical point of view, the bricks made with olive stones had a lighter red colour due to their lower hematite content. As expected, the samples made with these additives had greater porosity and better thermal insulation. However, they also had lower compressive strength to the point that the only samples that met the recommended criteria for general construction work were those with 20% vol. EPS, while those with 40% vol. EPS met the criteria to be used as lightweight bricks. Both additives improved the resistance of the bricks to decay by salt crystallisation.

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Effects of the size of expanded polystyrene as a pore-former on the properties of insulating firebricks

Cited by 10 publications

References 23 publications

The use of bagasse in the preparation of fireclay insulating bricks

The use of bagasse in the preparation of fireclay insulating bricks

Three-Dimensional Biomass Composites Using the Maillard Reaction Products of Molasses as a Binder

The Use of Expanded Polystyrene and Olive Stones in the Manufacture of Lightweight Bricks: Evaluation of Their Properties and Durability

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