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The aim is to develop a sustainable Ultra-High-Performance Concrete using high-volume fly ash to reduce cement usage and carbon emissions.

May 27, 2026

Mechanical Properties and Environmental Impact of a Sustainable Ultra-High-Performance Concrete using High-Content Fly Ash

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Randomized trial evaluates mechanical properties and carbon emissions of sustainable concrete, suggesting improved practices for construction.

The aim is to develop a sustainable Ultra-High-Performance Concrete using high-volume fly ash to reduce cement usage and carbon emissions.
Used high-volume Class F fly ash at 20%, 40%, and 60% by weight in concrete mixtures.
Incorporated 2% mixed-sized steel fibers and 8-mm limestone aggregates.
Evaluated mechanical properties and carbon emissions compared to reference UHPC.
Mixtures with 60% fly ash had the lowest compressive strength of 117.0 MPa but reduced CO2 emissions by 38%.
The 20% fly ash mixture achieved maximum splitting tensile strength of 22.1 MPa.
The 40% fly ash mixture provided the highest flexural strength of 22.7 MPa, exceeding the reference mixture's strength.

Panyai et al. (2026) studied this question.

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Randomized trial evaluates mechanical properties and carbon emissions of sustainable concrete, suggesting improved practices for construction.