University of Oulu

Valter Carvelli, Ana Veljkovic, Hoang Nguyen, Adeolu Adediran, Paivo Kinnunen, Navid Ranjbar, Mirja Illikainen, Low-velocity impact of hot-pressed PVA fiber-reinforced alkali-activated stone wool composites, Cement and Concrete Composites, Volume 114, 2020, 103805, ISSN 0958-9465,

Low-velocity impact of hot-pressed PVA fiber-reinforced alkali-activated stone wool composites

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Author: Carvelli, Valter1; Veljkovic, Ana1; Nguyen, Hoang2;
Organizations: 1Department A.B.C., Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133, Milan, Italy
2Fibre and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014, Oulu, Finland
3Department of Mechanical Engineering, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
4Department of Health Technology, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
5Department of Civil, Environmental and Geomatic Engineering, University College London, London, WC1E 6BT, UK
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.2 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-09-15


This study evaluates the effects of the manufacturing process and fiber reinforcement on low-velocity impact response of the recently developed PVA fiber-reinforced alkali-activated stone wool composites. To this end, reinforced and unreinforced specimens manufactured by hot-pressing were compared with those oven curing. The results revealed a similar impact response for the hot-pressed composite produced at 120 °C for 3 h and its counterpart cured at ambient pressure at 60 °C oven for 24 h. Furthermore, fiber reinforcement significantly improves the impact resistance of the hot-pressed composites showing about a 50% increase in peak load and a 40% reduction in penetration compared to the unreinforced materials. In view of the development of the hot-pressed composites and potential applications, accurate predictive models are of extremely importance, hence the material mechanical behavior was here simulated by adopting the concrete damage plasticity model to predict the low-velocity impact response of both unreinforced and reinforced materials and successfully verified for the scaling-up purpose.

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Series: Cement & concrete composites
ISSN: 0958-9465
ISSN-E: 1873-393X
ISSN-L: 0958-9465
Volume: 114
Article number: 103805
DOI: 10.1016/j.cemconcomp.2020.103805
Type of Publication: A1 Journal article – refereed
Field of Science: 212 Civil and construction engineering
214 Mechanical engineering
216 Materials engineering
Funding: This work was done as a part of FLOW (project number: 8904/31/2017) project funded by Business Finland in the ERA-MIN 2 Innovation program, which is part of the EU Horizon 2020 program. P. Kinnunen acknowledges financial support from Academy of Finland (grants no. 322085, 329477 and 326291). N. Ranjbar has received funding from the EU Horizon 2020 research and innovative program under the Marie Sklodowska-Curie (grant no. 713683).
Academy of Finland Grant Number: 322085
Detailed Information: 322085 (Academy of Finland Funding decision)
329477 (Academy of Finland Funding decision)
Copyright information: © 2020 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license