Production Methods of Reducing Non-Autoclave Foamed Concrete Shrinkage and Increasing its Quality Class
The paper presents research results on foamed concrete with the higher quality level and stability. The production methods of foamed concrete preparation are optimized. It is shown that the introduction of 0,01 wt.% crystalline glyoxal in 28-day age foamed concrete provides 50 % decrease of shrinkage deformation. Also, the average density variation factor decreases from 3,4 to 2,2 %, and the compressive strength decreases from 10,5 to 7,6 %. In the foamed concretes with crystalline glyoxal addition the quality class improves to B0.75 with reserving its D500 average density.