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- Title
Effect of n-C-S-H on Hydration and Reinforcement of Mineral Powder-Cement System at Low Temperatures.
- Authors
Li, Wei; Qian, Chunxiang; Li, Qingchao; Wang, Kehan; Zheng, Chunyang; Zhang, Yanli
- Abstract
This paper investigated the effect of nano-calcium silicate hydrate (n-C-S-H) on the early compressive strength of mineral powder-cement systems under low-temperature curing conditions (5 °C). The hydration mechanism of n-C-S-H in the mineral powder-cement system at different dosages was analyzed by combining it with XRD, DSC-TG, MIP, and other techniques. The results show that n-C-S-H significantly enhances the early compressive strength of the mineral powder-cement system under low-temperature curing conditions, with optimal results observed at a dosage of 1.0% (mass fraction). The XRD, DSC-TG, and MIP tests reveal that n-C-S-H promotes the hydration of the mineral powder cement, accelerates the generation rate of hydration products, reduces the porosity of the hardened mineral powder-cement slurry, and improves the system's density.
- Subjects
LOW temperatures; HYDRATION; MINERALS; X-ray diffraction; COMPRESSIVE strength; PORTLAND cement
- Publication
Nanomaterials (2079-4991), 2024, Vol 14, Issue 6, p524
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano14060524