Mechanical and thermal properties of wood fiber reinforced geopolymer composites. Issue 13 (1st December 2022)

• Record Type: Journal Article
• Authors: Furtos, Gabriel; Molnar, Luminita; Silaghi-Dumitrescu, Laura; Pascuta, Petru; Korniejenko, Kinga
• Is Part Of: Journal of natural fibers. Volume 19:Issue 13(2022)
• Page Start: 6676
• Page End: 6691
• Publication Date: 2022-12-01
• Subjects: Wood fiber -- Fly ash -- Geopolymer composites -- Fiber-reinforced geopolymer composites -- Mechanical properties -- Thermal properties; 关键词Wood fiber -- 木纤维 -- Fly ash -- 粉煤灰 -- Geopolymer composites -- 地质聚合物复合材料 -- Fiber-reinforced geopolymer composites -- 纤维增强地质聚合物复合材料 -- Mechanical properties -- 机械性能 -- Thermal properties. 热性能; Textile research -- Periodicals; Textile research; Periodicals; 677.005
• DOI: 10.1080/15440478.2021.1929655
• Languages: English
• ISSNs: 1544-0478

Abstract

ABSTRACT: Geopolymers based on fly ash are an emerging alternative to ordinary Portland cement, with a low impact on the environment and a potential to increase the sustainability of the concrete-based construction. Reported here is the design and investigation of new wood fiber reinforced geopolymer composites (WFRGC) based on fly ash and wood fiber (5–35 wt%). These WFRGC showed reduced mechanical properties with rising wood fiber addition as calculated by compressive strength with the cylindrical test (7.83–59.82 MPa); compressive strength at cubic test (6.95–50.23 MPa); force load at upper yield (0.70–5.02 KN); flexural strength (1.71–11.05 MPa); compressive modulus at cubic test (0.13–054 GPa); and flexural modulus (3.91–1293.61 MPa). The adding of wood fiber showed decreases of the density WFRGC (1.58–1.87 g/cm 3 ) and decreases the thermal conductivity of WFRGC. The addition 20 wt% wood fiber could be the limit for acceptable mechanical properties. WFRGC with 20–35 wt% wood fibers may be a promising green material for building.