Home » Research » 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

Factors affecting the properties of composites made by 4D printing

Factors affecting the properties of composites made by 4D printing

3D printing is the process where layers of materials are deposited to make structures of complex geometries. 4D printing is a process that combines 3D printing with the application of some activating agent in order to change the shape of the manufactured part after the process, e.g. the flat structure will change its shape to take up the desired complicated shape such as “curved” or “S” shaped.