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News New report on sustainable materials highlights coal fly ash in cement

New report on sustainable materials highlights coal fly ash in cement

Written by Global Cement staff 08 April 2024
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Philippines: A recent study from Cebu, Philippines presents a method for reducing greenhouse emissions in the cement industry. The research, supported by the Department of Science & Technology (DOST) of the Philippines, focuses on partially substituting cement with coal fly ash (CFA). According to the University of San Carlos researchers, CFA's efficacy as a cement substitute depends on its source, with variations in quality, performance, and water requirements when used in paste and mortar formulations.

The study evaluated CFA from a Philippine power plant, examining its use as a partial cement substitute. Researchers designed paste and mortar mixtures with different CFA-to-binder ratios and water-to-binder ratios. The study revealed that increasing the amount of CFA in cement up to 20% by weight could enhance compressive strength, ‘outperforming’ pure cement mixtures.

The study concluded that substituting a portion of cement with CFA not only reduces greenhouse gas emissions but also improves the compressive strength of the resultant material.

Last modified on 10 April 2024
Published in Global Cement News
Tagged under
  • Philippines
  • Sustainability
  • coal fly ash
  • Research
  • Study
  • Emissions
  • decarbonisation
  • GCW654

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