Influence of Utilizing Glass Powder with Silica Fume on Mechanical Properties and Microstructure of Concrete

Abstract

Carbon dioxide (CO2) emissions from cement production and pollution from glass shards both contribute to critical environmental issues. To help in the elimination environmental issues, solid wastes like glass are used as a partial cement alternative. Glass powder is marked by an altitude level of silicon dioxide SiO2 in its chemical composition, which qualifies it as a pozzolanic material. Partial cement substitution with glass powder in silica fume concrete was explored, and the results have been compared to those of both conventional concrete and silica fume concrete. The proportions of partial substitution of cement in blended (silica fume and glass powder) concrete were 10%, 20% and 30%. A variety of characteristics, including workability, dry density, compressive strength, splitting tensile strength, and microstructure, were used for evaluation the concrete mixes. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) were used to investigate the microstructure of concrete samples. Experimental studies have manifested that replacement levels of glass powder 10, 20 and 30% enhance workability of concrete. Adding glass powder with 10% replacement level to silica fume concrete increases compressive strength by 14% compared to conventional concrete. Results of SEM micrographs and EDX analysis indicates that glass powder is promised to be an effective pozzolanic material.

Complex Modulus characterization of an Optimized Binder with SCMs: proposition of an enhanced Cement formulation to improve Stiffness Behavior and Durability of Mortars and Concretes

“…They must be able to resist those loads, derived from high speeds winds, vibrations, seismic activity, varying loading regimes (from compression to tension) and frequencies, as well as their own weight and the mechanical system, sustaining the nacelle, rotors and blades (Bošnjaković et shown that the improvement of the modulus of cementitious materials used in aerogenerator towers and foundations can lead to signi cant improvements in durability. As reported by literature, the use of silica fume (SF) in concrete can signi cantly enhance its compressive strength and elastic modulus, essential properties in those applications (Fattouh & Elsayed, 2023;Keerio et al, 2022;Boukhelf et al, 2021). Kuo & Zhuang (2021) also presented evaluations on high-performance concrete for aerogenerators foundations.…”

“…With respect to SCMs, Silica fume (SF) and glass powder (GP) are considered by literature as two effective materials for improving the properties of cementitious materials, by replacing content of the ordinary Portland cement (OPC), with a signi cant focus on binder optimizations by its incorporation (Fattouh & Elsayed, 2023;Singh & Arora, 2023;Boukhelf et al, 2021).…”

“…The addition of SF can improve concrete strength and durability, especially in harsh environments, increasing the compressive strength (Fattouh & Elsayed, 2023;Singh & Arora, 2023;Tripathi et al, 2020), improving durability in sulfate-rich and acid environments (Singh et al, 2022;Tripathi et al, 2020), reducing permeability and improving microstrutucre. The SF incorporation in binders for concrete and mortars has shown promising results in enhancing performance and durability.…”

Bestmittel and Silica Fume Effect on Concrete Compressive Strength With Seawater Curing

“…These effects collectively lead to the enhancement of concrete durability. In general, using Silica Fume in the construction sector has been found to enhance the microstructure, densify the concrete, and enhance its strength and durability (Fattouh & Elsayed, 2023;Uzbas & Aydin, 2020).…”

Concrete Composites Based on Quaternary Blended Cements with a Reduced Width of Initial Microcracks

“…The benefits which have been observed from such solutions include limiting the width of the initial microcracks in concretes of this type, reduction of porosity of such materials, and improving their mechanical parameters [37][38][39]. In most cases, however, such effects resulted from strengthening the cement matrix structure through the development of additional C-S-H and C-A-S-H phases [40][41][42]. Previous studies have shown, among other things, that a particularly positive effect on the microstructure of the ITZ area between coarse aggregate and paste is the modification of the composition of the cement binder with single additives and nanoadditives, such as:…”