foam concrete

RESEARCH OF FOAM FORMERS AND CONCRETE ON THEIR BASIS FOR PRODUCTION OF PRODUCTS OF NON-AUTOCLAVE HARDENING AND MONOLITHIC CONCRETE

Production of foam concrete products and monolithic concreting from them requires foaming agents that have the properties of the obtained foam with a sufficient value of its criteria (multiplicity of foaming, stability of foam for a certain period of time); its compatibility with Portland cement and its hydration products; with hydrated lime, etc. Insufficient properties of the foam can be compensated by the introduction of corrective and stabilizing additives.

INVESTIGATION OF SURFACES FOR THE PRODUCTION OF NON-CONTAINERS OF ABSOLUTELY SILVER

The full market of Ukraine by various foaming agents of domestic and foreign production requires the study of their technical properties and properties of foam on their basis. The article presents the results of research on the multiplicity of foam formation and foam stability during a certain period of time. The comparative characteristic of such properties of foaming agents allows them to be used successfully in the production of foam concrete.

Розрахунок граничних напружень зчеплення арматури з пінобетоном

The article is devoted to the method of reinforcement bonding stress calculation in foam concrete, which is based on the new approach described in DSTU B V.2.6-156: 2010, and the author’s proposals, the most important of which is the replacement of the concrete tensile strength value by the compressive strength with conversion factor. The determination of values of safety factor of the material for two boundary conditions also confirmed the accuracy of proposed algorithm.

Stress-strain behavior, cracking and bearing strength of foam concrete slabs punched through rigid stamps

The article is devoted to the stress-strain behavior, cracking and bearing strength of plain and reinforced non-autoclaved foam concrete slab spunched through rigid stamp. Experimental researches were held on slabs freely supported along the contour. Authors made an effort to determine the level of loading that corresponded the start of cracking and it was set at the level of 0,6 Ncr . There was also evaluated the ultimate tensility of foam concrete.