Abstract
The present paper investigates deformation characteristics of natural hardened cement based foam concrete with chrysotile asbestos fibers and crystalline glyoxal. The given study is relevant as new methods for managing volumetric changes during the porous cement compositions operation are required to be developed. These new methods should allow obtaining high-quality, energy-efficient wall structures for application on the territory of the Russian Federation. Chrysotile asbestos fibers and crystalline glyoxal applied within the technology of cement foam concrete of natural hardening contribute to ensuring the increased deformation characteristics of concrete at the age of 28 days. The optimal compositions of heat-insulating foam concrete with the elastic modulus of 1035-1383 MPa, Poisson’s ratio of 0.1127-0.1446 and shear modulus of 465-604 MPa have been developed. The elaborated composition and technology of foam concrete production with glyoxal-containing additives is intended for use in the wall structures as well in monolithic construction as in pre-cast production.
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