The Effect of the Addition of Construction & Demolition Waste on the Properties of Clay-based Ceramics
Journal
Science of Sintering
Date Issued
2022-08
Author(s)
Biljana Angjusheva, Vilma Ducman , Emilija Fidanchevski
DOI
https://doi.org/10.2298/SOS2203359A
Abstract
Waste glass and reclaimed brick are types of construction and demolition waste
(C&DW) that could potentially be used as secondary raw materials in the production of
ceramics. Ceramics based on clay, waste demolished brick (5-15 wt.%) and waste glass (5-20
wt.%) were produced by pressing (P = 68 MPa) and subsequently sintered at 900, 950, 1000,
and 1050 o
C for one hour. The physical and mechanical properties of the ceramics obtained
were evaluated. The addition of demolished brick decreased the density and mechanical
properties of the clay specimens and increased the water absorption. The incorporation of
waste glass improved the sintering behavior and its mechanical properties. The addition of 20
wt.% waste glass and 10 wt.% waste demolished brick into the clay matrix improved the
flexural strength by up to 20.6 % and decreased the water absorption by up to 22 %. The
approach presented promotes an opportunity to recycle construction and demolition waste
into alternative resource materials, and represents a positive contribution to the environment.
(C&DW) that could potentially be used as secondary raw materials in the production of
ceramics. Ceramics based on clay, waste demolished brick (5-15 wt.%) and waste glass (5-20
wt.%) were produced by pressing (P = 68 MPa) and subsequently sintered at 900, 950, 1000,
and 1050 o
C for one hour. The physical and mechanical properties of the ceramics obtained
were evaluated. The addition of demolished brick decreased the density and mechanical
properties of the clay specimens and increased the water absorption. The incorporation of
waste glass improved the sintering behavior and its mechanical properties. The addition of 20
wt.% waste glass and 10 wt.% waste demolished brick into the clay matrix improved the
flexural strength by up to 20.6 % and decreased the water absorption by up to 22 %. The
approach presented promotes an opportunity to recycle construction and demolition waste
into alternative resource materials, and represents a positive contribution to the environment.
Subjects
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