Increasing the Solidity of Masonry Walls Made of Cellular Concrete Blocks of Autoclave Hardening by using Polyurethane Foam Adhesive Composition as a Masonry Solution

Abstract

The article presents the results of experimental studies of determining the strength of normal adhesion (under axial tension) in the masonry of cellular concrete blocks of autoclave hardening classes for compressive strength B1.5 ÷ B3.5 on various cement solutions and polyurethane foam adhesives. Tests were carried out in the Laboratory of the Department of «Reinforced Concrete and Stone Structures» of Moscow State University of Civil Engineering on experimental samples representing two cubes of 150x150x150 mm in size, sawn out of cellular concrete blocks and bonded (glued) together using masonry (binding) compositions. The analysis of research results was performed and the value of the percentage of increase in normal adhesion in masonry when using polyurethane foam adhesives in masonry joints instead of cement masonry solutions was determined.