Glagola I. Methods for determination of corrosion resistance, durability and anticorrosion protection of ferroconcrete structural elements

The thesis is devoted to development of methods for determination of corrosion resistance, durability, modern materials and technologies of corrosion protection for ferroconcrete structural elements, buildings and constructions. A model of corrosion degradation of ferroconcrete constructions have been developed. On the base of this model, methods for determination of corrosion resistance and durability of structural elements, buildings and constructions have been developed. Method of main differentional equation for evualution of coefficient b, which connected the value of corrosion degradation of concrete with concentration and time of action of aggressive environment have been introduced. This coefficient taks the opportunity to conduct the evaluation of ferroconcrete structural elements degradation. It was made the analisys of results of coefficient b calculation by precision and approximated methods. It has shown, that intensity of corrosion-mechanical fracture processes depends not only on aggressive environment concentration, but olso on thermocyclic loadings. It was taken into account reinforce corrosion in concrete and ferroconcrete structural elements, corrosion behaviours of non-loaded reinforcement and influence of stresses on metal reinforcement corrosion. It was investigated the corrosion resistant concrete, buildings and constructions, on the base of which was proposed the technologies of repairing works.