Synthesis of Calcium Silicate Hydrate Nanocomposites and Its Influence on the Hydration Process of Cement

DOI

10.2991/978-94-6463-728-1_62How to use a DOI?

Keywords

C-S-H nanocomposites; dosage variation; hydration acceleration; microstructure evolution

Abstract

It is essential to investigate the influence of calcium-silicate-hydrate (C-S-H) nanocomposites on the hydration process of cement at different dosages. This study presents the synthesis of C-S-H nanocomposites (NC) via coprecipitation and characterization using DLS, TEM, XRD, and FT-IR. The influence of varying quantities of NC on the hydration process of cement was examined, including setting time, compressive strength, hydration heat release, and microstructural morphology of hydration products. Furthermore, correlations between hydration microstructure evolution and macroscopic performance were identified. The results indicate that NC significantly reduce the setting time of cement paste; however, the effect on initial setting time diminishes with increasing dosage. Compared to the blank system, NC notably enhance the compressive strength of cement mortar at 1 day of curing. But, after 3 days, the positive effect of NC on strength development diminishes, and at a 1% dosage, there is virtually no improvement in compressive strength. Thermal hydration tests and SEM analysis demonstrate that NC primarily accelerate cement hydration and enhance compressive strength development by promoting the formation of a cross-linked hydration product network. Nonetheless, the rapid growth of hydration products can increase the number of inter gel pores, thereby reducing the strengthening effect at higher dosages over 3 days of curing.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jinlong Zhang
AU  - Conghao Zhong
AU  - Jiabing Hu
AU  - Qiang Shao
AU  - Kaihong Zhong
PY  - 2025
DA  - 2025/05/19
TI  - Synthesis of Calcium Silicate Hydrate Nanocomposites and Its Influence on the Hydration Process of Cement
BT  - Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
PB  - Atlantis Press
SP  - 667
EP  - 676
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-728-1_62
DO  - 10.2991/978-94-6463-728-1_62
ID  - Zhang2025
ER  -