Sustainable Innovation in Concrete Production Incorporating Fly Ash and Bottom Ash

Om prosjektet

This project is a collaborative research effort focusing on the utilization of fly ash and bottom ash, sourced from Borregaard, as part of their long-term strategy to reduce landfill dependency by 2030. The primary objective is to investigate the adding of fly ash and bottom ash into concrete mixtures, while also examining the regulatory framework controlling their use in construction materials in Norway.

The project is structured into two main components, Firstly, a thorough literature review examining the chemical properties of both fly ash and bottom ash, as well as their utilization in construction materials. For fly ash, laboratory research will be conducted to assess its impact on concrete strength and durability when replacing a portion of cement in the traditional concrete mixtures. Secondly, the compatibility of fly ash characteristics with concrete will be evaluated. The performance evaluation of the new concrete mixture will be carried out using the FEM Design analysis program, comparing it with standard concrete mixtures. Afterwards, a Life Cycle Assessment (LCA) will be conducted using the Granta Edu Pack analysis program, to quantify the environmental impact reduction of the CO2 footprint results, achieved by replacing portions of the concrete mixture with fly ash. The analysis will also assist in the identification of key stages and processes in the life cycle of both standard and fly ash-incorporated concrete mixtures.

Concerning bottom ash, a literature study will be conducted to explore alternative applications of this material in concrete and other construction materials. The research will include a review of case studies from various countries detailing the utilization of bottom ash in construction materials, leading up to a summary of findings.

The project aims to demonstrate the performance and usefulness of utilizing fly ash and bottom ash into construction materials. Thereby, gaining deeper understanding of the feasibility for utilization in sustainable concrete mixtures within the Norwegian regulatory context. The research and analysis, within the broad scope of this project, seeks to contribute to improved practices and environmental sustainability.

Vis bildeoversikt Lukk

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Bilder:

1. Measuring process before testing flexural strength using a flexural machine

2. Controlling the testing process for concrete performance using a compressive machine

Om oppdragsgiver

Borregaard is an internationally well-known company with competence in advanced and sustainable biorefineries. This project initiative by Borregaard, is part of an ongoing collaborative research, associated with the challenges with management of fly ash and bottom ash. The project is related to Borregaard’s aims and long-term strategic goals to significantly reduce the reliance on disposal of fly ash and bottom ash in landfills by 2030. Borregaard has one advanced biorefinery in Norway and five others outside of Norway, specializing in the production of environmentally friendly biochemicals produced from natural and sustainable raw materials. Borregaard are dedicated to reducing reliance on oil-based products by strong focus on innovation and competence in environmentally sustainable practices. With a workforce of 1100 personnel spread across plants and sales offices in 13 countries across Asia, Europe, and the Americas, Borregaard enjoys a formidable global presence and a distinguished track record of accomplishments.

Veileder

Carlos Salas Bringas and Harrison C Gallantree-Smith, Borregaard

Susana Garcia Sanfelix, Østfold University College