PERFORMANCE ASSESSMENT OF LOCALLY PRODUCED POZZOLANIC CEMENT BLOCKS AS A SUSTAINABLE ALTERNATIVE TO ORDINARY PORTLAND CEMENT SANDCRETE BLOCKS
This study compares the performance properties of Ordinary Portland Cement (OPC) and Pozzomix cement sandcrete blocks, with a focus on sustainable construction practices. The key properties evaluated include compressive strength, water absorption, density, and weight, alongside the critical influence of water-cement ratios. In the experiment, blocks were produced using an inverted mix ratio of 1:16 (cement to sand), and the curing process spanned various time frames to assess the long-term durability of both cement types. Laboratory tests were conducted to measure mechanical properties at 7, 14, 28, and 60 days of curing, while the water absorption rate was tested over 28 days. Results indicate that both materials meet basic performance standards, but Pozzomix blocks showed a higher compressive strength and improved performance in harsh environmental conditions, suggesting greater durability over time. Although OPC sandcrete blocks had a lower water absorption rate, the water-cement ratio in Pozzomix blocks contributed to denser structures, making them more sustainable for load-bearing applications. Pozzomix cement also demonstrated a reduced carbon footprint, as its production involves the use of natural pozzolanic materials, which significantly lowers CO2 emissions compared to OPC. This analysis emphasizes the potential for Pozzomix to enhance the sustainability of the construction industry, particularly in developing economies like Ghana, where affordable and eco-friendly building materials are needed. The findings suggest broader global applications for Pozzomix cement in reducing the environmental impact of construction while ensuring structural integrity in diverse climates.
Ordinary Portland Cement (OPC), Pozzomix Cement, Economically, Eco-efficiently Sustainable, and Commercialisation.