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http://dx.doi.org/10.14190/JRCR.2020.8.2.204

Evaluation of PLA Fiber Dissolution in Cement Paste and Geopolymer  

Kim, Joo-Hyung (Construction Technology Research Center, Korea Conformity Laboratories)
Kwon, Seung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.2, 2020 , pp. 204-211 More about this Journal
Abstract
Poly-Lactic Acid(PLA) fiber is an eco-friendly material and is biodegradable, so it can be utilized for manufacturing porous construction materia ls with interna l pore connection. In this study, domestic PLA fiber products(0.5mm india meter, 1.0mm in length, 10mm in length) were tested for melting at high temperatures and high alkality, and they were incorporated with FA-based geopolymer. Compressive strength was obtained through high temperature curing and alkali activator, however the complete melting of the PLA fiber was not ensured. The previous study handling PLA fiber with 0.003mm in diameter was completely dissolved, but 0.5mm and 1.0mm in diameter showed 42.5% and 33.3% of dissolution ratio, respectively. In addition, the increasing fiber volume led floating fibers during curing, which had a negative effect on its workability and solubility. Although the properties of PLA fiber may vary depending on the raw materials and production conditions, PLA fiber with 0.1mm or less diameter is recommended for porous construction material.
Keywords
Polylactic acid fiber(PLA fiber); Solubility; Geopolymer; Fly ash; Compressive strength; Porous construction material;
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Times Cited By KSCI : 2  (Citation Analysis)
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