Comparison of Self-Compacting Concrete and Traditional Concrete in San Pedro Sula, Honduras

Abstract

This research compares the performance of self-compacting concrete (SCC) against conventional concrete in Honduras, focusing on fresh and hardened properties. The study addresses the limitations of traditional concrete, which requires vibration, increases labor costs, and risks poor consolidation in reinforced elements. SCC mixtures were designed following EFNARC and ACI 237R-07 guidelines, using locally available materials. Three dosages were prepared: a 4000 psi control, a mix with 20% cement replacement by porcelain powder, and another with 20% replacement plus a 10% sand reduction, both including superplasticizer. In fresh state, slump flow results were 45 cm for the control, 51 cm for the 20% porcelain mix, and 59 cm for the 20% porcelain + 10% less sand, confirming improved flowability with higher fines content. In hardened state, compressive strength at 7 days ranged from 4577 to 4678 psi, and at 14 days from 5259 to 5355 psi, surpassing conventional requirements. Results indicate SCC with porcelain powder is technically viable, offering superior workability, competitive strength, and constructive advantages such as reduced vibration, faster placement, and better surface quality.