Mechanical and thermal properties of wood fiber reinforced geopolymer composites

被引:59
作者
Furtos, Gabriel [1 ]
Molnar, Luminita [2 ]
Silaghi-Dumitrescu, Laura [1 ]
Pascuta, Petru [3 ]
Korniejenko, Kinga [4 ]
机构
[1] Babes Bolyai Univ, Raluca Ripan Inst Res Chem, Cluj Napoca, Romania
[2] Tech Univ Cluj Napoca, Dept Civil Engn & Management, Cluj Napoca, Romania
[3] Tech Univ, Phys & Chem Dept, Cluj Napoca, Romania
[4] Cracow Univ Technol, Fac Mat Engn & Phys, Inst Mat Engn, Krakow, Poland
关键词
Wood fiber; Fly ash; Geopolymer composites; Fiber-reinforced geopolymer composites; Mechanical properties; Thermal properties; HEMP-BASED COMPOSITES; FLY-ASH; INSULATING MATERIALS; CONDUCTIVITY; PERFORMANCE; DURABILITY; STRENGTH; DENSITY; CEMENT;
D O I
10.1080/15440478.2021.1929655
中图分类号
TB3 [工程材料学]; TS1 [纺织工业、染整工业];
学科分类号
0805 ; 080502 ; 0821 ;
摘要
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.
引用
收藏
页码:6676 / 6691
页数:16
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