Logo image
Back
Development of a nature-inspired polymeric fiber (BioFiber) for advanced delivery of self-healing agents into concrete
Journal article   Open access   Peer reviewed

Development of a nature-inspired polymeric fiber (BioFiber) for advanced delivery of self-healing agents into concrete

Mohammad Houshmand Khaneghahi, Divya Kamireddi, Seyed Rahmaninezhad, Amirreza Sadighi, Caroline L. Schauer, Christopher M. Sales, Ahmad Najafi, Aidan Cotton, Reva Street and Yaghoob Amir Farnam
Construction & building materials, v 408, 133765
Dec 2023
DOI: https://doi.org/10.1016/j.conbuildmat.2023.133765
url
https://doi.org/10.1016/j.conbuildmat.2023.133765View
Accepted (AM)Open Access (Publisher-Specific),  Open

Abstract

Calcium carbonate Endospore Hydrogel Polymer Fiber Self-healing
• BioFiber were developed using core-fiber, endospore-laden hydrogel, and protective shell. • Polyester and polyvinyl alcohol fibers were used as core-fiber, and alginate as bio-agent carrier. • Endospore Lysinibacillus sphaericus strain MB284 was used as self-healing agent. • A blend of polystyrene and polylactic acid was selected as protective shell layer. • BioFiber showed satisfactory results for further incorporation in quasi-brittle matrix. In this study, we developed nature-inspired multi-functional polymeric fibers (called BioFiber) to deliver bio-self-healing agents into cementitious materials. BioFibers were manufactured using a load-bearing core-fiber, a sheath of endospore-laden hydrogel, and an outer damage-responsive polymeric shell layer. The innovative BioFiber integrates three key functionalities into the quasi-brittle matrix: (i) autonomous bio-self-healing, (ii) crack growth control, and (iii) damage-responsiveness. The hydrogel sheath contained endospores, as bio-agents, to establish microbially-induced calcium carbonate precipitation (MICCP) as a self-healing end-product. The core-fibers provided crack growth control functionality into quasi-brittle engineering materials. Additionally, the outer shell coating integrated a robust damage-responsive self-healing activation strategy in concrete. A comprehensive parametric study was conducted to explore material options and the influential parameters for tailoring the processing-compositions-structure properties of the developed BioFiber. The findings of this study revealed that a concentration of 8 w/v sodium-alginate crosslinked with calcium acetate provided higher solution uptake capacity required for MICCP. As for the shell, the polymer blend of polystyrene and polylactic acid (1:1 wt%), with polymer/solvent ratio of 18 w/v-single layer coating, effectively protected BioFibers during simulated concrete casting process. Lastly, each BioFiber was able to produce 40–80 mg of calcium carbonate within the first 30 h of activation.

Metrics

57 Record Views
23 citations in Web of Science
20 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Web of Science research areas
Construction & Building Technology
Engineering, Civil
Materials Science, Multidisciplinary
Logo image