Comparative research of water absorption and compressive strength of conventional bricks using different curing methods

Curing plays a decisive role in the development of mechanical strength and durability characteristics of conventional clay bricks used in low-rise and load-bearing masonry construction. Inadequate or improper curing practices often result in higher porosity, reduced compressive strength, and long-term durability issues, especially in cost-sensitive construction environments. This research presents a comparative experimental evaluation of the influence of different curing methods on the water absorption and compressive strength of conventional burnt clay bricks. Four commonly adopted curing regimes—Water curing, Air curing, Steam curing, and Membrane curing—were examined under controlled laboratory conditions. Standard-sized bricks were prepared using identical raw materials, molding techniques, and firing conditions to isolate the effect of curing alone. Water absorption was determined using immersion tests, while compressive strength was measured using a calibrated compression testing machine after the specified curing period. Statistical tools including one-way analysis of variance were employed to assess the significance of variations among curing methods. The results demonstrate clear performance differences attributable to curing techniques, with Steam curing exhibiting the highest compressive strength and lowest water absorption, followed by Water curing. Air curing showed comparatively inferior performance due to inadequate moisture retention, while Membrane curing produced moderate results. The statistical analysis confirmed that curing method significantly influences both strength and absorption characteristics. These findings emphasize the necessity of selecting appropriate curing practices to improve the quality and service life of masonry units. The research contributes practical insights for engineers, contractors, and material technologists by highlighting curing strategies that enhance brick performance without altering raw material composition or production processes.