Journal
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
Volume 35, Issue 5, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/JMCEE7.MTENG-14340
Keywords
Basalt fiber (BF); Basalt powder; Pore structure; Deterioration; Mitigation; Basalt-powder-fiber-reinforced cement composite (BPFRCC)
Ask authors/readers for more resources
The effect of basalt fiber (BF) on basalt fiber-reinforced cement composite (BFRCC) is contradictory. BF can be corroded by a pore solution, weakening the interface bonding between BF and cement matrix. However, the inclusion of exogenous bubbles in BF has a detrimental effect on the pore structure. On the other hand, basalt powder (BP) can densify the pore structures and enhance the bonding between BF and cement matrix in basalt-powder-fiber-reinforced cement composite (BPFRCC), leading to improved performance.
Although basalt fiber (BF) has been used to reinforce cement composite as an eco-friendly material, its effect on basalt fiber-reinforced cement composite (BFRCC) is contradictory. BF was found to be corroded by a pore solution through scanning electron microscopy observation. Owing to the chemical alkali corrosion and physical denudation of the BF in an alkaline environment, the interface bonding between the BF and the cement matrix was weakened, and the toughening effect of the BF could not be fully exerted. Pore structure characterization was examined based on the water uptake kinetics method and image analysis of binary specimen slices. The BF was found to have a detrimental effect on the pore structure because of the inclusion of exogenous bubbles. However, basalt powder (BP) could densify the pore structures of the cementitious materials, especially in the basalt-powder-fiber-reinforced cement composite (BPFRCC), in which it further reduced the corrosion degree of the BF and enhanced the bonding between the BF and cement matrix interfaces. Therefore, BP and BF can synergistically enhance the performance of BPFRCC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available