Optimizing the Rheology of Concrete modified with High Silica and Alumina Precursor for Normal Workability in the Built Environment
No Thumbnail Available
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
Concrete performance in its fresh state is not only pertinent for proper concrete
placement, consolidation, and finishing but also its properties in its hardened state.
Thus, this study optimized the rheology of concrete modified with high silica and
alumina precursor (cashew nutshell ash (CNA)). Cashew nutshell was recycled,
and the ash obtained was used at 5, 10, and 15 wt.% of cement using the concrete
mix designs of grades C 25-40 to attain the target strengths of 25-40 MPa at 28
days. Both slump and its corresponding compressive strength were determined.
Moreover, the concrete slump was optimized using the experimental mix design
properties (EMDPs) such as cementitious materials, water/cementitious materials,
and cementitious materials/aggregate ratios, as independent (continuous
variables). The findings showed that EMDPs influenced the rheology of fresh
concrete, significantly, hence yielding an optimized high precision with 99 % R2.
Therefore, the model can be used to predict the normal workability of the
concrete incorporating CNA in the built environment.
Keywords
TA Engineering (General). Civil engineering (General), TD Environmental technology. Sanitary engineering, TH Building construction