Utilization of Waste Glass in Autoclaved Silica–Lime Materials

Borek, Katarzyna; Czapik, Przemysław

doi:10.3390/ma15020549

Cited by 4 publications

(2 citation statements)

References 39 publications

(55 reference statements)

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“…Mullite, Al l6 Si 2 O 13 , contains more aluminum than kaolinite, influencing the particle color, which is pale yellow-green with mostly bigger sizes with rounded shapes. The blue particles contain a significant amount of Ca and Na with traces of K, elements related to the glass particles, with the general chemical formula being 6SiO 2 •CaO•Na 2 O [39,40].…”

Section: Microstructure and Composition Characterizationmentioning

confidence: 99%

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

Avram,

Barbu Tudoran,

Cuc

et al. 2024

Sustainability

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Ceramic slurry wastes have a significant hazardous potential when dumped. Their recycling as raw material is a sustainable approach for the development of nature-friendly applications. The microstructure and mechanical properties play a key role in the success of this sustainable recycling. Ceramic slurry samples resulting from the wall and floor tiles production facility were analyzed. The mineral composition was investigated by XRD combined with mineralogical microscopy and the microstructure was investigated by SEM microscopy coupled with EDX spectroscopy and elemental mapping. The ceramic slurry contains: quartz, kaolinite, mullite and small amounts of lepidocrocite. Quartz and mullite particles have sizes in the range of 5–100 μm and kaolinite has small particles of around 1 to 30 μm. Iron hydroxide crystallized as lepidocrocite is finely distributed among kaolinite aggregates. It makes the slurry unable to be reused in the technological process because of the glaze staining risk, but it does not affect the material cohesion. Thus, the cylindrical samples were prepared at progressive compactions rates as follows: 1808.55; 1853.46; 1930.79 and 2181.24 kg/m3 and dried. Thereafter, were subjected to a compression test with a lower compression strength of 0.75 MPa for lower density and a higher strength of 1.36 MPa for the higher density. Thus, slurry compaction enhances the kaolinite binding ability. The Young’s Modulus slightly decreases with the compaction increasing due to local microstructure rigidizing. This proves the binding ability of kaolinite, which properly embeds quartz and mullite particles into a coherent and resistant structure. The fractography analysis reveals that fracture starts on the internal pores at low compaction rates and throughout the kaolinite layer in the samples with high compactness. The observed properties indicate that the investigated ceramic slurry is proper as a clay-based binder for sustainable ecological buildings, avoiding the exploitation of new clay quarries. Also, it might be utilized for ecological brick production.

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Section: Microstructure and Composition Characterizationmentioning

confidence: 99%

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

Avram,

Barbu Tudoran,

Cuc

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…The idea of sustainable development in the construction industry is used at different levels. For example, sustainable design [1,2], construction and use of a building as environmentally friendly in relation to the entire life cycle of buildings [3,4], application of the possibility of substitution of construction products [5,6] utilization of waste [7] or recycled material [8]. In addition, safety and sustainability are also connected.…”

Section: Introductionmentioning

confidence: 99%