| dc.description.abstract | The increased demand of Bangladeshi cement in construction industry has gained attention of
researchers, engineers and practitioners to understand the quality of cements. A number of
industries produce cement not only to meet the local demand but also export cement abroad.
The research aims to investigate the physical qualities of cements of different brands of
Bangladesh using experimental investigations. The physical properties of cement include normal
consistency, initial and final setting time, compressive strength of cube, compressive strength of
cylindrical concrete, specific gravity of cement.
Standard tests were performed on cements manufactured by five different industries of
Bangladesh. A total 70 tests samples on CEM II/B-M type representative cement samples were
prepared to conduct tests on those physical parameters as per ASTM specifications.
The experimental results obtained from this study were also analyzed to investigate the statistical
parameters. The results are compared with the ASTM guideline values and previously available
study. In addition, correlations are also developed to find relationships between compressive
strength of concrete and their age of curing. The influence of initial setting times on concrete
strength are also investigated. The experimental result shows that almost all the samples meet the
ASTM requirement that ultimately proves the good quality of Bangladeshi Cements. Moreover,
the results are compared with an existing study for some cases. The comparison reveals that the
quality of Bangladeshi cements has improved in last decade quite significantly in terms of
mechanical strength of concrete. | en_US |
