Effect of Ultrafine Mineral Admixtures on Mechanical Properties of Engineered Cementitious Composites

Authors

Lisha Yan, Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, ChinaFollow
Xiangyu Guo, Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, ChinaFollow
Weike Jiang, Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, ChinaFollow
Zhenzhu Xing, Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, ChinaFollow
Qinfei Li, Shandong Provincial Key Laboratory of Green and Intelligent Building Materials, University of Jinan, Jinan, ChinaFollow
Pengkun Hou, School of Materials Science & Engineering, University of Jinan, Jinan, ChinaFollow
Chonghui Wang, Department of Civil Engineering, Aston University, Birmingham, UKFollow

Abstract

In this study, to address the challenge of balancing the mechanical properties of traditional ECC with sustainability, the effects of substituting part of cement with ultrafine fly ash (UFA) and ultrafine ground granulated blast furnace slag (UGGBS) on the mechanical properties of ECC were investigated, and the differences in the roles of UFA and UGGBS were compared and analysed. The results showed that compared with UFA, UGGBS significantly improved the compressive strength and tensile strain of ECC, with a compressive strength of 92 MPa (73% higher than UFA-ECC), an ultimate tensile strain of 8.87% (4 times higher than UFA-ECC), and the formation of a finer multi-crack network. The rheological results showed that UGGBS improved the flowability by reducing the yield stress and plastic viscosity of the paste due to finer particles. In addition, ECC-UG had a higher PSH index, indicating superior toughness and crack saturation.

Keywords

engineered cementitious composites (ECC), tensile properties

Date of Version

2025

DOI

10.5703/1288284318206

Recommended Citation

Yan, Lisha; Guo, Xiangyu; Jiang, Weike; Xing, Zhenzhu; Li, Qinfei; Hou, Pengkun; and Wang, Chonghui, "Effect of Ultrafine Mineral Admixtures on Mechanical Properties of Engineered Cementitious Composites" (2025). International Conference on Durability of Concrete Structures. 13.
https://docs.lib.purdue.edu/icdcs/2025/act/13