4.7 Article

Zr-rich basalt continuous fibers with increased alkali resistant properties

Journal

CONSTRUCTION AND BUILDING MATERIALS
Volume 288, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.123089

Keywords

Basalt fiber; Alkali resistance; Zirconia doping; Fiber reinforced concrete

Funding

  1. Russian Foundation for Basic Research [18-29-17068]

Ask authors/readers for more resources

The addition of lanthanum oxide increases the tensile strength of zirconium-rich basalt continuous fibers by 15-20%, lowers the production temperature, widens the production temperature range, improves their alkali resistance, and reduces cost significantly.
Zirconium-rich basalt continuous fibers with zirconium oxide content from 5.1 to 8.1 wt% with the addition of 1% lanthanum oxide were obtained in a laboratory facility. The production temperature range were measured. It was shown that lanthanum oxide addition allows to decrease production temperature by 50 degrees and to make wider the production temperature range by 10 degrees. Weight loss and tensile strength loss of fibers after refluxing in alkali solution were determined. The weight loss after boiling in 1 M NaOH and 0.5 M Na2CO3 solution is comparable to the weight loss of zirconium-rich glass fibers (AR glass). The addition of lanthanum oxide leads to an increase in the tensile strength of Zr-rich basalt continuous fibers by 15-20%. Based on the obtained data, it can be concluded that the presented approach will not only improve the alkali resistance of basalt continuous fibers for reinforcing cements and concretes, but also significantly reduce their cost. (c) 2021 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available