TITLE:
Influence of the Colorless Waste Glass on the Mineralogical, Microstructural and Mechanical Properties of Clay Material from Wack (Adamawa, Cameroon)
AUTHORS:
Souaibou, Elimbi Antoine, Danwe Raidandi
KEYWORDS:
Clay Materials, Waste Glass, Terracotta, Physical and Mechanical Properties
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.9 No.5,
May
30,
2019
ABSTRACT: This study reports the
investigation of the influence of adding waste glass on the properties of fired clay
specimen. Four different particle sizes (smaller than 100 μm, 300μm, 500μm, and 800 μm) of waste glass were
mixed with a clay material at contents of 0%, 2%, 6% and 10% per weight. Specimen samples were fired at 750℃ in an electrical furnace for 6 hours, at a
heating rate of 5℃/min. The
physical and mechanical properties of terracotta are studied. The chemical
analysis revealed that the clays were dominated by kaolinite and
montmorillonite with small proportion of
mixed layers clay. The fine grained
texture (0.002 mm > 25%) and high plasticity (WP > 30%) of the clays were responsible for the moderate
and high values of shrinkage upon oven drying and firing. The firing color variation from reddish brown shade was due to the amounts of iron and titanium oxides
present in the obtained material. The water absorption
was varied between 17.40% and 13.70%, while the
linear shrinkage was estimated to be between 0.70% and 1.20% and the flexural strength from 5.30 to 8.10 MPa. These results showed that mixing clay with waste glass at 750℃ is an interesting approach to obtain reddish
brown ceramics destined for bricks or roofing tiles.