Home » Reseach » Fracture toughness of geopolymer concretes reinforced with basalt fibers

Fracture toughness of geopolymer concretes reinforced with basalt fibers

The purpose of this work was to investigate the influence of the volumetric fraction of the fibers on the fracture toughness of geopolymer cement concretes reinforced with basalt fibers. The values of fracture toughness, critical stress intensity factor and critical crack mouth opening displacement were measured on 18 notched beams tested by three-point bending.

The a0=h (notch height/beam height) ratio was equal to 0.2 and the L0=h (distance between the supports/beam height) ratio was equal to 3.  According to the experimental results, geopolymer concretes have better fracture properties than conventional Portland cement. They are also less sensitive to the presence of cracks.

Dylmar Penteado Dias, Clelio Thaumaturgo, Departamento de Engenharia Mecanica e de Materiais (DEMM), Instituto Militar de Engenharia (IME), Rio de Janeiro, Brazil.

About Irina Yaroslavna

Irina Yaroslavna
Главный редактор отраслевого портала Basalt.Today
x

Check Also

Basalt Fiber and its Applications

Basalt Fiber and its Applications

Basalt fibers have a great potential to be the next generation materials. The global basalt fiber market is estimated to grow at a CAGR of 13.1% from 2015 to 2020.