University of Oulu

Hoang Nguyen, Valter Carvelli, Elijah Adesanya, Paivo Kinnunen, Mirja Illikainen, High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers, Cement and Concrete Composites, Volume 90, 2018, Pages 150-160, ISSN 0958-9465,

High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers

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Author: Nguyen, Hoang1; Carvelli, Valter2; Adesanya, Elijah1;
Organizations: 1Fibre and Particle Engineering Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
2Department A.B.C., Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
3Department of Civil and Environmental Engineering, Imperial College London, SW7 2BU London, United Kingdom
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.9 MB)
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Language: English
Published: Elsevier, 2018
Publish Date: 2018-04-17


Alkali-activated ladle slag (AALS) is a promising cementitious material with environmental benefits. However, the brittleness of material has been limiting the use in construction. Therefore, in this experimental investigation, different polypropylene (PP) fibers were employed as a short randomly reinforcement in cementitious matrix in order to improve mechanical performance of the AALS composites.

The study reveals that the AALS composite could gain very high ductility with an appropriate fibrous reinforcement. Fracture energy and fracture toughness of PP fiber reinforced AALS mortars increased by approximately 150 and 7.6 times, respectively, compared to the unreinforced material. Additionally, the flexural strength of the composite increased by roughly 300%. Pseudo strain hardening (PSH) behavior was observed along with multiple cracks under uniaxial tensile test. Scanning electron microscope (SEM) images confirmed the local fiber bridging effect, which resulted in the high mechanical performance of the PP-reinforced AALS.

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Series: Cement & concrete composites
ISSN: 0958-9465
ISSN-E: 1873-393X
ISSN-L: 0958-9465
Volume: 90
Pages: 150 - 160
DOI: 10.1016/j.cemconcomp.2018.03.024
Type of Publication: A1 Journal article – refereed
Field of Science: 212 Civil and construction engineering
216 Materials engineering
Funding: This work was supported by the European Regional Development Fund [grant number: A70189].
Copyright information: © 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (