Mechanical Performance of Low-Carbon Laterized Concrete Structures Under Service Loading [slag [ggbs] as Binder and Laterite Soil as Fine Aggregate

This study investigates the mechanical performance of low-carbon laterized concrete structures under service loading, incorporating Ground Granulated Blast Furnace Slag (GGBS) as a partial replacement for cement and laterite soil as a substitute for fine aggregate. The research aims to develop an eco-friendly concrete mix with reduced carbon emissions and sustainable material utilization. Various concrete mixes were prepared by partially replacing ordinary Portland cement with GGBS at different proportions, while natural river sand was replaced with laterite soil in corresponding ratios. Standard concrete tests were conducted to determine compressive strength, split tensile strength, flexural strength, and density at different curing ages.

The results revealed that the inclusion of GGBS improved the strength characteristics and durability of the laterized concrete up to an optimal replacement level, beyond which a slight reduction in performance was observed. The laterite soil exhibited adequate bonding characteristics, contributing to enhanced stiffness and resistance under service loading conditions. Overall, the modified concrete demonstrated satisfactory structural performance and met the required mechanical properties for medium-load-bearing applications.

The study concludes that GGBS-based laterized concrete is a viable sustainable alternative to conventional concrete, offering reduced carbon footprint and improved long-term durability for structural applications in tropical regions.