Mechanics of Advanced Composite Structures

Mechanics of Advanced Composite Structures

Influence of Plate Thickness and Mineral Admixtures on Flexural Behaviour of RC Slab – An Experimental Investigation

Document Type : Research Article

Authors
Department of Studies in Civil Engineering, UBDT College of Engineering, Davanagere-577004, Karnataka, India
Abstract
This study is focused on evaluating the behaviour of use of alternatives for cement, namely, Ground-Granulated Blast Furnace Slag (GGBS) and Nano Silica (NS), on the mechanical, microstructure, and structural behavior of reinforced concrete (RC) slabs. Concrete was made with various dosages of GGBS from 0% to 50% at a rate of 5% and NS dosage from 0.1% to 1% at an interval of 0.1%. Compressive and tensile strength of concrete was evaluated along with microstructural characteristics using Scanning Electron Microscopy (SEM). The optimum dosages were found to be 10% GGBS and 0.3% NS by cement weight. This optimum dosage was used in making RC slabs with dimensions 1200 x 1200 x 100 mm, varying the slab thickness. To determine the stiffness and load-bearing capacity of the slabs, two-point loading was applied. Use of GGBS and NS results in high-density and high-strength concrete. Such research works highlight the prospective use of GGBS and NS in sustainable construction, encouraging cost-effective, eco-friendly practices with innovations in concrete technology.
Keywords
Subjects

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