Quick-fixing glue based on gypsum-aluminous expanding cement and Portland cement
Abstract
Quick-fixing glue based on gypsum-aluminous expanding cement and Portland cement
Incoming article date: 21.07.2018The possibility of obtaining quick fixing glue of C0-C2 classes on the basis of gypsum-aluminous expanding cement modified with Portland cement is shown. It was found that the strength of adhesion to the base and the amplitude of deformations during hardening of the quick fixing glue based on the MGGRC essentially depends on the ratio of GC: G: PC in the binder composition, and the direct relationship between the dosage of the PPP in the adhesive composition and the strength of adhesion to the base is not traced. It was revealed that the PPP and VMD positively influence the early strength of adhesion to the base, but at the age of 28 days the influence of the VSD becomes negative. A decrease in the strength of adhesion to the base was found with an increase in the tensile strength of the adhesive for bending. There is no direct relationship between the adhesion strength and the amplitude of glue deformations during hardening.
Keywords: dry building mixes, bond strength, hypoglycous expanded cement, fast fixing glue