The Structure Formation of the Cellular Concrete with Nanostructured Modifier

Abstract

In this work the peculiarities of phase formation of the cement stone at presence of nanostructured modifier of the silica composition were identified using the method of x-ray diffraction and raster electronic microscopy. Also the character of influence of modifier on the structure formation of the cement stone was defined. Polydisperse modifier with the presence of a highly active colloidal component, on the one hand, acts as a pozzolanic component, and on the other hand – as a submicron filler.

Abnormal Mineral Formation in Aluminate Cement Stone

“…The properties of any composite materials directly depend on the characteristics of their base matrix. This also fully applies to composites based on binding agents with various composition, which quality indicators are set as a result of system hardening (Strokova et al 2015;Kozhukhova et al 2016;Nelyubova et al 2017;Dmitrieva et al 2018;Shulpekov et al 2018). In this regard the study of phase formation in such systems seems quite relevant.…”

Peculiarities of Structure Formation in System "Cement - Basaltic Fibre"

“…Thus, the concrete matrix has lower bending tensile strength and is apt to microcracks formation. Modern research is aimed at improving physical-mechanic characteristics of materials by introducing mineral modifiers and additives of different composition and nature [1][2][3][4][5][6][7][8][9]. However, hardening the base cement matrix by additives does not allow increasing composite bending strength.…”

Modified pavement cement concrete

“…Low-crushed-stone concrete is mostly efficient in the construction of cement concrete pavements with high-performance machines with sliding forms [10]. The use of low-crushed-stone concrete allows receiving strong and durable cement concrete pavement at reduced content of crushed stone by 20...30%, which also contributes to the reduction of pavement cost.…”