Effect and Mechanism of Liquid Nano-CaCO3 on Mortar Properties

doi:10.16552/j.cnki.issn1001-1625.2024.1623

Abstract

Abstract: The research of nanomaterials in cementitious materials has been increasing in recent years, among which nano-CaCO₃, as one of the most produced and used nanomaterials in many fields, has a promising application in cementitious materials.In order to investigate the effect of liquid nano-CaCO₃ (LNC) on mortar properties, different LNC content was selected to study its effects on mortar workability, mechanical properties, hydration behavior and microstructure.The results show that after adding LNC, the mortar fluidity shows a tendency of increasing and then decreasing with the increase of LNC content. Addition of LNC improves the flexural and compressive strength of the mortar, and the flexural and compressive strength at 3 d are increased by 14.29% and 32.51%, respectively, compared with the baseline group at 3.0% (mass fraction) LNC content. LNC improves the densification of cementitious materials through small size effect and nucleation effect, promotes the hydration reaction to proceed, and improves the pore structure.

Key words: liquid nano-CaCO₃, workability, mechanical property, hydration behavior, microstructure, nucleation effect

CLC Number:

TQ177.6⁺2

SUN Jiuye, SUN Qian, WANG Dongmei, YANG Renhe, LI Jiaqi, RONG Hui, GUO Yibing, ZHANG Pengyu. Effect and Mechanism of Liquid Nano-CaCO₃ on Mortar Properties[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(8): 2771-2780.

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Effect and Mechanism of Liquid Nano-CaCO₃ on Mortar Properties

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