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Silica fume

About: Silica fume is a research topic. Over the lifetime, 10177 publications have been published within this topic receiving 173857 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the effect of elevated temperature on the mechanical and physical properties of concrete specimens obtained by substituting cement with finely ground pumice (FGP) at proportions of 5, 10, 15, and 20% by weight was investigated.

222 citations

Journal ArticleDOI
TL;DR: In this paper, the formation of brucite by hydration of a light-burned periclase (MgO) was investigated, and it was shown that the pH of systems rich in MgO tended towards the pH controlled by residual brucites.

222 citations

Journal ArticleDOI
TL;DR: In this paper, a yield stress based mixture design approach for 3D printable concretes was presented, where the mixtures were evaluated based on buildability, extrudability, robustness and tests for structural build-up.
Abstract: The current study deals with a yield stress based mixture design approach for 3D printable concretes. The mixtures were evaluated based on buildability, extrudability, robustness and tests for structural build-up. For the print parameters (such as pump type, nozzle size and extrusion velocity) used in the study, it was found that both extrudability and buildability could be achieved only when the material yield stress was within a range of 1.5–2.5 kPa. Below this range, the material lacked enough strength to achieve shape stability, while above this range, the extrudabilty of the material was difficult. The robustness of the mixtures was quantified in terms of a variability factor defined in terms of the variation in yield stress with small changes in the superplasticizer dosage. Inclusion of 10% of silica fume, 0.1% of viscosity modifying agent (VMA) and 0.1–0.3% addition of nanoclay resulted in decreasing the variability factor, hence improving the robustness. The structural changes due to thixotropy and cement hydration increased the yield stress with time. This structural build-up was assessed by measuring the yield stress with increasing rest duration. The mixture with silica fume showed the maximum structural build-up while the mixture with VMA showed the least. Heat curves from semi-adiabatic calorimetry and penetration curves were also used to assess the structural build-up. They showed a similar trend to that of the yield stress vs time plots.

222 citations

Journal ArticleDOI
Yu Zhang1, Yunsheng Zhang1, Guojian Liu1, Yonggan Yang1, Meng Wu1, Bo Pang1 
TL;DR: In this paper, a novel 3D printing concrete ink that has good fluidity during movement and satisfying standing behavior at static state due to the structural rebuilding of cement paste advanced by the addition of nano clay (NC) and silica fume (SF) was specially designed to be extruded through a nozzle to print layer-over-layer components for an innovative additive manufacturing process.

221 citations

Journal ArticleDOI
TL;DR: In this article, the behavior of a high-strength concrete (HSC) with silica fume (SF) modified with different amounts of solid particles recycled from crumbed used truck tires is presented.

221 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
2023485
2022944
2021621
2020726
2019779