| Porcelain Stoneware Tiles Based on Clays Mixture and
Recycled Waste Glass Powder: Effect of Soaking Time |
Oumarou Ramadan Njindam, Saliou Njuhou,* Amadou Pountouenchi, Fadimatou Ngoungoure
Mandou, Yacouba Kouotou Mfomboum, Ibrahim Cherif Mountapbeme and Iffat Qoudsiyyah
Maury Njoya
Pages : 1-6
DOI : 10.1080/0371750X.2024.2274543 |
| Abstract |
| The effect of soaking time on the properties of porcelain stoneware tiles based on clay
mixture and recycled waste glass powder was studied. Mixture was prepared and fired at
1150oC. During firing, raw mixture was subjected to various soaking times: 30, 60, 90 and
120 min. The by-products were characterized by their linear shrinkage, water absorption,
bulk density, flexural strength, X-ray diffraction (XRD) and scanning electron microscopy
(SEM). The results were modelled by using different mathematical expressions. The results
demonstrated that physico-mechanical properties of ceramic probe are significantly
affected by soaking time. After 30 min, products satisfied the ISO 13006 standard condition
for porcelain stoneware wall and floor tiles: water absorption value was lowest (0.07%)
and mechanical strength value was 44.4 MPa. Prolonged soaking time was undesirable
due to its negative effect (bloating) on the products’ physical and mechanical performance.
The XRD patterns indicated the presence of mullite, cristobalite, enstatite, anorthite,
hematite and quartz as the main crystalline phases. SEM images of the tiles fired at
1150oC for 30 min display a very close texture and dense microstructure.
[Keywords: Soaking time, Waste glass powder, Bloating, Mechanical properties] |
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