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, https://doi.org/10.1016/j.cemconcomp.2018.03.024.
High performance cementitious composite from alkali-activated ladle slag reinforced with polypropylene fibers
|Author:||Nguyen, Hoang1; Carvelli, Valter2; Adesanya, Elijah1;|
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
|Online Access:||PDF Full Text (PDF, 3.9 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201804176584
|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.
Cement & concrete composites
|Pages:||150 - 160|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
212 Civil and construction engineering
216 Materials engineering
This work was supported by the European Regional Development Fund [grant number: A70189].
© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).