| Issue |
MATEC Web Conf.
Volume 323, 2020
10th International Conference of Advanced Models and New Concepts in Concrete and Masonry Structures (AMCM 2020)
|
|
|---|---|---|
| Article Number | 01016 | |
| Number of page(s) | 8 | |
| Section | Adnanced Models and New Concepts in Concrete Structures | |
| DOI | https://doi.org/10.1051/matecconf/202032301016 | |
| Published online | 05 October 2020 | |
Modification of early strength parameters of concrete by the addition of fly ash and admixture of nano C-S-H for application in 3D printing
1 MSc. Eng., Lublin University of Technology, Poland
2 Prof. , Lublin University of Technology, Poland
* Corresponding author: g.golewski@pollub.pl
In the paper, the authors present the results of tests concerning traditional cement mortars with the addition of silica fly ash and the C-S-H nano-admixture. The use of fly ash results in improved plasticity of the mixture. The use of the C-S-H nano-admixture has a positive effect on shortening the setting time and a rapid increase in the strength of mixtures without losing their subsequent properties, which is presented in the research described in the paper. On this basis, the impact of fly ash and the nano-admixture on the selected parameters of the cement paste in the early maturation periods was determined – after 4, 8, 12, 24, 72h and also 7 and 28 days. The following tests were carried out on previously prepared samples: the compressive strength test on a hydraulic press, the test of setting time and the test of cement matrix shrinkage.
© The Authors, published by EDP Sciences, 2020
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