Mechanical Properties and Microstructure of Environmentally Friendly Foam Concrete with Fly Ash Modified with Micro- and Nano-SiO2
Alexey N. Beskopylny, Sergey A. Stel’makh, Evgenii M. Shcherban’, Diana M. Shakhalieva, Andrei Chernil’nik, Natal’ya Shcherban’, Ivan Vyalikov, Aleksandr Budovskiy
TL;DR
This paper explores creating eco-friendly foam concrete using industrial waste and silica additives to improve strength and insulation while reducing environmental impact.
Contribution
The study introduces a novel foam concrete formulation using fly ash, microsilica, and nanosilica to enhance mechanical and thermal properties.
Findings
The optimal mix (15% FA, 6% MS, 0.4% NS) achieved a 46.6% increase in compressive strength compared to the control.
The modified foam concrete had a 3.8% lower density and 15.2% lower thermal conductivity than the control mix.
SEM analysis showed improved pore structure and increased structural quality by 52.4% with the new formulation.
Abstract
Currently, foam concrete is a prevalent energy-efficient building material, which is applicable for multiple purposes in a wide variety of buildings and structures. Improving the environmental performance of foam concrete and reducing its production costs through the use of industrial waste is a relevant and promising area. The goal of this study is to create innovative foam concrete (FC) mixtures using industrial waste, focusing on their environmentally friendly and energy-efficient properties for structural and thermal insulation purposes. The production of FC involved industrial waste products like fly ash (FA) and microsilica (MS). Nanosilica (NS) was used as an additional modifying additive. The study experimentally investigated the impact of the proposed formulation and process solutions on FC’s density, compressive strength (CS), and thermal conductivity (TC). The most effective…
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Taxonomy
TopicsMagnesium Oxide Properties and Applications · Concrete and Cement Materials Research · Recycling and utilization of industrial and municipal waste in materials production