TITLE:
Determination of the Compressive Strength of Concrete from Binary Cement and Ternary Aggregates
AUTHORS:
Oluwatosin Babatola, Chinwuba Arum
KEYWORDS:
Ceramic Waste, Aggregate, Compressive Strength, Setting Time, Ordinary Portland Cement
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.10 No.4,
December
22,
2020
ABSTRACT: One of
the most active fields of research embraced by many disciplines, including
civil engineering, is material reuse. It is known that ceramics wastes from
various construction and demolition sites and manufacturing processes are
dumped away into the environment, resulting in the pollution that threatens
both agriculture and public health. Therefore, the utilization of ceramic waste
in construction industries would help to protect the environment from such
pollutions. This paper presents the results of an experimental analysis of the
effects of partial replacement of coarse aggregates, fine aggregates, and
ordinary Portland cement with the ceramic waste, at percentage levels of 0%, 5%,
10%, and 20%; and the assessment of the strength property of the concrete
produced with optimum combination of the constituents. Compressive strengths of
this concrete were determined at 7, 28, and 56 days of curing using 150 × 150 × 150 mm cube specimens. Test results showed that the compressive strength
of the concrete decreased as the content of ceramic waste present in the
concrete increased. Thus, concrete produced from the partial replacement of
ordinary Portland cement with ground ceramics gave compressive strengths of
16.6 N/mm2 and 13.4 N/mm2 at 5% and 20% replacement
levels respectively. Similarly, the compressive strengths of concrete from the
partial replacement of sand with fine ceramics were 13.8 N/mm2 and
10.9 N/mm2 for 5% and 20% replacements respectively. For 5% and 20%
replacement levels of granite with crushed ceramics in concrete gave a
compressive strength of 11.6 N/mm2 and 9.7 N/mm2,
respectively. For concrete derived from the partial replacement of stone dust
with fine ceramics, the compressive strengths were 19.6 N/mm2 and
18.10 N/mm2 respectively for 5% and 20%. For concrete produced from
the partial replacement of bush gravel with crushed ceramics, the compressive
strengths obtained were 10.9 N/mm2 and 8.98 N/mm2 respectively for 5% and 20% replacements. Finally, the concrete derived from
the optimal combination of binary cement, ternary fine, and coarse aggregate
had a compressive strength of 22.20 N/mm2 which is higher than the
compressive strength of the control mixture at 18.10 N/mm2. The
result of the ANOVA carried out showed that the compressive strength obtained
for each partial replacement of different components is statistically
significant at 5%, i.e. the change in
the compressive strength of the concrete produced is due to the presence of
ceramic waste.