Evaluation of the performance of dry pressed concrete tables with variable cement grade by mixture method

The production of high-performance concrete tables with improved properties has become crucial and economically significant. Enhancing service life and mechanical properties has always been essential in their production. Porosity, influencing durability and service life, and compressive strength, affecting mechanical properties, have been the focus of this investigation on dry-pressed compact concrete (DPC) tables. For this purpose, ۲۷ sample designs of DPC based on three cement strength classes of ۳۲.۵, ۴۲.۵, and ۵۲.۵ megapascals have been prepared. Water-to-cement ratio (۰.۲, ۰.۲۵, and ۰.۳), available cement amount (۳۰۰, ۳۵۰, ۴۰۰ kilograms per cubic meter), and the fine aggregate-to-cement ratio have been considered as the main experimental parameters. The results of compressive strength and porosity percentage on these samples are examined using the mix design analysis method. The findings from the mix design method indicate the role of cement strength in the mechanical properties of concrete.

کلیدواژه ها:

dry-pressed compact concrete (DPC) ، cement strength classification ، compressive strength ، porosity ، mix design model.