Influence of Nano Silica Particles on Durability of Flax Fabric Reinforced Geopolymer Composites

Materials

Faiz Shaikh¹  It-Meng Low²  Thamer Alomayri³  Hasan Assaedi⁴ 

[1] Department of Civil Engineering, Curtin University, GPO Box U1987, Perth 6845, Australia;Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth 6845, Australia;Department of Physics, Faculty of Applied Science, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia;Department of Physics, University College in AlJumum, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia;

关键词: geopolymer;    nano silica;    mechanical properties;    flax fibres;    durability;   

DOI  :  10.3390/ma12091459

来源: DOAJ

【 摘 要 】

The durability of natural fibres as reinforcement in geopolymer composites continues to be a matter of concern due to the alkalinity of activators of geopolymer matrices. The alkaline environment is the main reason for natural fibres degradation in cementitious matrices. This paper presents the influence of nano silica (NS) on the durability and mechanical performance of geopolymer composites that are reinforced with flax fabric (FF). The durability investigations were conducted after the storage of samples at ambient temperature for 32 weeks. The study revealed that the addition of nano silica has a positive influence on the physical and mechanical properties of these composites. The presence of NS accelerated the geopolymeric reaction and lowered the alkalinity of the system, thus reducing the degradation of flax fibres.

【 授权许可】

Unknown