Formulations of effective gypsum-fiber and gypsum-cement-fiber materials modified with active mineral additives and superplasticizer have been developed in the present experimental work. The influence of the type and length of reinforcing polypropylene fiber, the conditions of hardening and molding on the physical and mechanical properties of the specimens was studied.
The purpose of this article is to analyse the professional and creative development of natural geographic course teachers of the Republic of Tatarstan in the process of professional retraining. The method for work performing is a retrospective analysis of professional retraining of natural geographic course teachers within the higher professional education system. The creative potential development of natural geographic course teachers is based on the paradigm of preserving the fundamental nature of the Russian education as a process aimed at integrating natural geographic courses and forming a complete picture of the world in order to foster flexibility, versatility of scientific thinking, different ways of reality reproduction, creating an internal focus in self-development and self-organization throughout life. Findings of the study are represented by a professional retraining system of natural geographic course teachers under conditions of education reforming, which contributes to the professional development of teachers.
The paper shows the effectiveness of the use of a polyfunctional complex modifier for a gypsum-cement-pozzolanic binder (GCPB), which allows reducing the water requirement of the mixture by 35%, increasing the flexural strength of gypsum-cement-pozzolanic composites (GPPC) by 28%, and 25% for compression. The results of experimental studies of the effect of polypropylene fibers on the basic physicomechanical properties of a central processing center are presented. The performed studies have shown high efficiency of polypropylene fibers of the type VSM-II-6 for dispersed reinforcement of the central industrial park. The maximum increases in the values of the flexural strength (by 41.2%) and compression (by 20%) are achieved with their volume content in the amount of 1%. It should be noted that the introduction of the studied fibers with a length of more than 6 mm did not lead to the expected result, which is due to the formation of a heterogeneous structure of the GPPC
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