Abstract
The novelty of this paper lies in the identification of the scientific patterns of the influence of thermal power plant waste (TPPW) on the hydration mechanism and the structure of the gypsum-cement binder (GCB). The classification of raw materials for the production of GCB has been developed taking into account the genesis, which contributes to the prediction of the properties of composites. The features of the hydration phase formation and hardening of GCB have been studied taking into account the chemical, structural and morphological features of fly ash and slag. In addition, the microstructural, morphological, and thermal properties of the cured binders at a 28 day cure were determined. For the first time, scientific data on the properties of gypsum-cement fiber-reinforced composite using TPPW and microfiber have been obtained. The results show that the synergistic effect of gypsum-cement binder, TPPW, and polyamide or basalt microfiber improves the physicomechanical properties of a 28 day cured binder: compressive strength of 20 MPa, flexural strength of 8.9 MPa, and softening coefficient 0.87.
Highlights
One of the most important problems of our time is the creation of comfortable conditions for human existence in regard to the use of building structures and materials [1]
About 90% of fly ash particles are limited to 18.15–201 μm fractions, and slag particles are limited to 1.1–16.35 μm fractions
About 90% of fly ash particles are limited to 18.15–201 μ m fractions, and slag particles are limited to 1.1–16.35 μ m fractions
Summary
One of the most important problems of our time is the creation of comfortable conditions for human existence in regard to the use of building structures and materials [1]. Current trends in the development of building materials science are associated with the transition to the creation of multicomponent, multilayer, multilevel composite materials with a given set of properties, their structural and functional organization [4,5] This ensures their behavior, that they are adapted to variable environmental factors throughout the life of the operation, and, at least, the preservation or improvement of the quality of the environment [6,7]. Papers in the field of gypsum binders, materials, and products, as well as favorable environmental, technical, and economic aspects of the production and use of these materials indicate that these are all prerequisites for widespread use in construction [8,9,10,11] In this regard, the development of effective quick-hardening building composites, obtained using new types of available raw materials with improved performance characteristics, is required [12,13].
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