Open AccessCorrelating the thermomechanical indexes of concrete modified with anacardium occidentale nutshell ash using linear model polynomial analysis
Author(s) -
Solomon Oyebisi,
U.T. Igba,
A. N. Ede,
John Oluwafemi,
Grace Mark
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1036/1/012076
Subject(s) - anacardium , compressive strength , materials science , cementitious , thermal conductivity , composite material , cement , curing (chemistry) , horticulture , biology
This study correlated the thermal and mechanical properties of concrete produced with anacardium occidentale (cashew) nutshell ash (AONA). Cashew nutshells, agricultural waste products, was valorized to obtain AONA. AONA was replaced at 5, 10, 15, and 20 wt% of cement to produce concrete grade 25 MPa. Density, compressive strength, and thermal conductivity of the concrete samples were determined at 28 days curing, and the results were correlated using regression model analysis. The experimental findings revealed that the compressive strength increased with increasing AONA content. Moreover, both density and thermal conductivity reduced as AONA content increased. Besides, the correlation yielded a high precision with 97% “R 2” . Thus, AONA has proved to exhibit higher mechanical strength with excellent thermal insulation when utilized as supplementary cementitious material (SCM) in concrete production. The developed model can also be applied to the correlation of thermomechanical properties of concrete incorporating SCMs in that time, energy, and cost in conducting laboratory works would be reduced.