Parametric optimization of autoclave curing for energy cost reduction of fiber cement panels

The results of experimental research on parametric optimization of autoclave curing for energy cost reduction of fiber cement panels are presented. Relation between the flexural strength of fiber cement panels and heating rate, the time of isothermal aging, the cooling rate of the autoclave has been established by the three-factor design of the second order

Features of the hydration process of the modified blended cement for fiber cement panels

The paper studies features of the hydration process of the modified blended cement for fiber cement panels (FCP) using differential thermal analysis, X-ray diffraction analysis, electron microscopy and infrared spectroscopy. It is found that deeper hydration process in silicate phase, denser and finer crystalline structure form in fiber cement matrix based on the modified blended cement. Generalization of this result to the case of fiber cement panels makes it possible to achieve formation of a denser and homogeneous structure with increased physical and mechanical properties

Influence of active mineral additives on the basic properties of the gypsum cementpozzolan binder for the manufacture of building products

The diversity of active mineral admixtures of different origin, mineral composition, dispersion and activity, including by-products in many industrial processes necessitates investigating their properties and characteristics of interaction with gypsum cement compositions. Completed research allowed to define the hydraulic activity of the investigated mineral admixtures and their effect on the rheological and mechanical properties of the composite binder, as well as to determine their optimal content in the mixture. It was shown that the use of the tested active mineral admixtures in optimal amounts allows to obtain stable gypsum cement-pozzolanic system and improve the performance properties of products based on them, resulting in increase of the tensile strength in bending from 2 to 48%, at a compression - from 4 to 49% and can significantly extend the range of use them in the manufacture of a broad spectrum of building products

Modified fiber cement panels for civil construction

The authors investigated the influence of modifying agents, based on the realization of three-factor plan of the second-order, on physico-mechanical properties and durability of fiber cement boards based on cellulose fibers