轻质膨胀黏土骨料替代20%至25%时混凝土减重15%至20%：《科学报告》抗压强度17至19兆帕、对照组31.45兆帕，11月13日刊出
《科学报告》于2026年11月13日刊出轻质膨胀黏土骨料混凝土研究。论文由Nair、Anand、Andrushia等人发表，数字对象标识符为10.1038/s41598-026-71504-3，2026年5月5日收稿、9月9日接受。
研究考察M25等级混凝土以未浸泡的轻质膨胀黏土骨料按0%至50%的水平替代常规粗骨料后的工程性能、耐久性、微观结构与可持续性特征。
实验结果显示，替代水平在20%至25%时，抗压强度保留与混凝土密度下降之间的权衡最有利：抗压强度为17至19兆帕，对照配合比为31.45兆帕，同时混凝土密度降低15%至20%。
（来源：《科学报告》）
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)
来源：《科学报告》
发布：GSM·美国（发布链接）
图片来源：图：袋装的膨胀黏土骨料。Retired electrician，CC0，经 Wikimedia Commons。 / Photo: Retired electrician, CC0, via Wikimedia Commons.
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