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<p>The utilization of effective treatments to modify the quality of specific low-energy concrete production applicable to the widespread construction sector has been recognized as an effective contribution to achieving sustainable development and has therefore attracted research interest. This study explores influence of using an internal curing agent based cold-bonded lightweight fine aggregate (LWFA) partially replacing fine aggregate (FA) at four various levels of 25, 50, 75, and 100 vol% on the enhanced performance of a low-energy super-sulfated cement self-compacting concrete (SSC-SCC), and thus proposes a promising approach for manufacturing high-quality SSC. Experimental results indicated as compared with the reference SSC-SCC, the internally cured SSC-SCC containing so-called optimum amount of LWFA substituting FA at 25 vol% had significant enhancement on 28-day compressive strength at 17.5% and 15.7% under water and air curing regimes, respectively. Additionally, the incorporation of LWFA replacing FA at 25 vol% induced the internally cured SSC-SCC with the best resistances to water and chloride ion penetration due to the depth of water penetration reduced at up to 63.6% and the total Coulombs passed reduced up to 32.3%, respectively. For producing the hardened SSC-SCC with comparable compressive strength to that of the reference, a higher amount of LWFA replacing FA at 50 vol% was possibly used. As low density and shrinkage were seriously considered, LWFA replacing FA at up to 75–100 vol% was a superb consideration. In this study, optimized content of LWFA resulted in beneficial effects of internal curing and improved aggregate gradation and thus improved comprehensive properties of the internally cured SSC-SCC.</p>

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Influence of lightweight fine aggregate as internal curing agent on performance of low-energy super-sulfated cement self-compacting concrete

  • 期刊论文

  • 发表日期：

    2026年3月3日

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  • Vu-An Tran,
  • Hoang-Anh Nguyen,
  • Le Anh Tuan Bui,
  • Trong-Nhan Nguyen,
  • Van-Tay Luong,
  • Dang-Nguyen Nguyen

摘要

The utilization of effective treatments to modify the quality of specific low-energy concrete production applicable to the widespread construction sector has been recognized as an effective contribution to achieving sustainable development and has therefore attracted research interest. This study explores influence of using an internal curing agent based cold-bonded lightweight fine aggregate (LWFA) partially replacing fine aggregate (FA) at four various levels of 25, 50, 75, and 100 vol% on the enhanced performance of a low-energy super-sulfated cement self-compacting concrete (SSC-SCC), and thus proposes a promising approach for manufacturing high-quality SSC. Experimental results indicated as compared with the reference SSC-SCC, the internally cured SSC-SCC containing so-called optimum amount of LWFA substituting FA at 25 vol% had significant enhancement on 28-day compressive strength at 17.5% and 15.7% under water and air curing regimes, respectively. Additionally, the incorporation of LWFA replacing FA at 25 vol% induced the internally cured SSC-SCC with the best resistances to water and chloride ion penetration due to the depth of water penetration reduced at up to 63.6% and the total Coulombs passed reduced up to 32.3%, respectively. For producing the hardened SSC-SCC with comparable compressive strength to that of the reference, a higher amount of LWFA replacing FA at 50 vol% was possibly used. As low density and shrinkage were seriously considered, LWFA replacing FA at up to 75–100 vol% was a superb consideration. In this study, optimized content of LWFA resulted in beneficial effects of internal curing and improved aggregate gradation and thus improved comprehensive properties of the internally cured SSC-SCC.