Replacing 20 to 25 Percent of Coarse Aggregate With Lightweight Expanded Clay Cuts Concrete Density by 15 to 20 Percent: Strength of 17 to 19 Megapascals Against a 31.45 Megapascal Control in Scientific Reports, Published November 13
Scientific Reports published a study of concrete made with lightweight expanded clay aggregate on November 13, 2026. The paper, by Nair, Anand, Andrushia and co-authors, carries digital object identifier 10.1038/s41598-026-71504-3, was received on May 5, 2026 and accepted on September 9, 2026. The research examined M25 grade concrete incorporating unsoaked lightweight expanded clay aggregate as a substitute at levels from 0 to 50 percent, covering engineering properties, durability, microstructural and sustainability characteristics as an alternative to conventional coarse aggregate. Based on the experimental results, replacement levels of 20 to 25 percent gave the most favourable trade-off between compressive strength retention and concrete density reduction, giving compressive strengths of 17 to 19 megapascals, compared with 31.45 megapascals for the control mix, while reducing concrete density by 15 to 20 percent.
(Source: Scientific)
Source: Scientific
Published by GSM · USA (original Chinese edition)
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