THE BASIC DEFORMATION PROPERTIES OF CLAYDITE-CONCRETES

Abstract

The results of experimental studies of the modulus of elasticity, shrinkage and creep of expanded clay concrete are presented. Studies show that the use of lime and active mineral additives and in particular fly ash can reduce the consumption of cement. The method of experimental studies, the results of testing samples and their analysis, as well as the volume, purpose and results of the tests are described. Optimal compositions of expanded clay concretes satisfying the requirements for deformability are obtained. According to the results of experimental studies with 95% reliability, quadratic regression equations for the modulus of elasticity of expanded clay concrete and expanded clay perlite concrete on multicomponent binder and quartz sand are obtained. Were received regression models of the second order, linking the magnitude of shrinkage deformations and the extent of creep factors of the composition and the conclusion about the possibility of wide regulation of extended properties through proper selection of the components of the composition of claydite-concrete on multicomponent binder. Convenient dependences for practical use in determining the deformation of expanded clay concrete on a multicomponent binder are established Carried out researches have allowed to evaluate the main characteristics of the long-lasting properties of claydite-concrete on multicomponent binder required for implementation in the prestressed structures of buildings and structures.