Prospects of using an innovative crushed stone (lightweight, solid, heat-insulating) and an aggregate for concrete structures as well as in the building process of the underground part

摘要

Technical progress in construction is inseparably linked with the development and using of advanced materials. In this direction, particularly relevant inventing new construction materials, more stronger, lighter, cheaper and resistant to aggressive environments of construction materials. One way to increase the resistance of concrete to chloride and sulphate environment is to use the new non-traditional fillers and additives that are capable to reduce the permeability of concrete and the rate of corrosion processes in aggressive environments. Creating a primary protection at the design stage of concrete allows increasing the durability of structures in the building process of underground part. Such measures eliminate the need for secondary protection: corrosion resistance coatings in aggressive environment. Designing a sulfate and chloride resistant concrete are important issues in building foundations on corrosive soil and groundwater, bridges, marine structures, structures of various industrial buildings and structures. The main purpose of this project is: to develop a new type of gravel technology that can be characterized by its thermal insulation properties, lightness, strength, and resistance to aggressive environment; to design a concrete by using innovative gravel and filler that are developed by us. In order to achieve this goal we have developed a new technology of producing artificial gravel. The filler of that new artificial gravel is based on the conversion of a flask that is from the Taskala field of the West Kazakhstan region. Up to 75-80% of chemical and mineralogical composition of this innovative gravel and filler is mainly made up of tiny particles of silica opal-cristobalite. This crystal structure is able to suppress the corrosion process and provide the sulphate resistance to a concrete. The following advantageous characteristics of concrete and concrete are found: due to light weight of innovative gravel, it is easy and safe to mix the concrete mix - without any lumps; provides high speed concrete work. Concrete mixture evenly distributed over the entire surface and fills voids; due to its light weight, the innovative filler and gravel is easily transported through concrete pumps.