Effect of Morphology of Raw Resources of the North Caucasus, Used in the Production of Astringent Low Water Requirements, on the Strength Characteristics of Fiber-Reinforced Concrete

Abstract

Every year, technical progress is gaining momentum, providing the society with innovations in the field of building materials science. But many problems still remain unresolved. With the growth of urban areas, there is a need for building materials that provide the required strength characteristics and have a minimal negative impact on the environment. The use of local raw materials for the production of astringent low water requirements with subsequent use in fiber-reinforced concrete in the North Caucasus allows solving these problems. Not only natural resources of the North Caucasus in the form of sand were used as the main components of the astringent low water demand, but also wastes from the construction industry. Secondary use of construction waste in addition to technological features improves the ecological territory of the region, reducing the landfill area. In addition to environmental safety, the use of this building material reduces the water-cement ratio and the consumption of Portland cement. The use of basalt fiber as a micro-reinforcing material increases the chemical resistance of fiber-reinforced concrete in general and allows using it in underground structures where aggressive groundwater is present. Also, this type of dispersible reinforced concrete, taking into account its thinness, is rationally used for reconstruction and repair in connection with the low weight of elements, in order to reduce the cost of reinforcing foundations, bases and bearing structures in conditions of increased seismicity. It has been proven by experience that the use of fiber-reinforced concrete with the use of binder from local raw materials is expedient for the erection, repair and reconstruction of buildings and structures in the North Caucasus.