Toughness and Pore Characteristics of Basalt Fiber Bar Cement-Based Materials
ZHU Lexi
CUI Sheng'ai
BAI Jingwei
ZHAN Jinke
ZHENG Tianyu
Abstract：The effects of basalt fiber bar(BFB)diameter and content on the mechanical and permeability properties of cement-based materials were investigated.The regulatory effect of BFB on the pore structure of cement-based materials was explored by combining computed tomography(CT)technology.The results indicate that BFB with small diameters can effectively reduce the porosity,improve the impermeability and flexural toughness of the cement-based materials.Meanwhile,it can slightly weaken the compressive strength.With the increase of BFB content,both toughness and impermeability of the cement-based materials are significantly improved.When the BFB diameter is 0.2 mm and the content is 3.0%,the comprehensive performance of the specimen B0.2-3.0 is optimal.Compared with the specimen without BFB,the flexural strength of specimen B0.2-3.0 is increased by about 1.6 times,and the porosity is reduced by 36.49%.The specimen B0.2-3.0 exhibits multi-crack propagation and flexural hardening characteristics.When the diameter of BFB is 0.4 mm,the overall performance of the specimens is lower than that of the specimens without BFB.
Keywords：basalt fiber barcement-based materialtoughnesspore structurecomputed tomography(CT)
Publication Date：2025-12-30
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：9( 1171-1179 )