Analysis of the effect of fibro fibers on the physical and mechanical properties of non-autoclaved aerated concrete

Abstract

The criteria for determining the level of energy saving in Kazakhstan are mostly outdated and significantly do not correspond to modern European standards, so the adjustment of insulation is inevitable. This will lead to an even greater increase in demand for thermal insulation materials. More and more attention is being paid to the potential economic and environmental benefits of using waste as raw materials in the production of non-autoclaved aerated concrete.

Studies have shown that the addition of fibers to aerated concrete can increase its compressive strength, tensile strength and bending strength, as well as improve the quality of the mixture and reduce the risk of shrinkage of aerated concrete during molding [1].  In addition, the addition of fibers can increase the strength and ductility of concrete, making it more resistant to cracking and deformation under load.

The effectiveness of fiber reinforcement in aerated concrete also depends on the application and desired mechanical properties of concrete. For example, fibers with a high aspect ratio and oriented in the direction of applied loads are more effective in increasing the bending strength of concrete, while fibers with a low aspect ratio and arbitrarily oriented are more effective in increasing the impact strength of concrete.