Biocidal Binders for the Concretes of Unerground Constructions

The developed technology of producing cements with biocidal properties and the results of investigating the physico-mechanical properties of the developed cements, cement pastes, and hardened composites are given. Data on the biostability of composites modified with sodium sulfate, sodium fluoride, and polyhexamethylene stearate are presented. Recommended biocidal binder compositions for manufacturing concretes and other cement composites are given.

Development of Biocidal Cements for Buildings and Structures with Biologically Active Environments

In recent years, both Russian and foreign researchers have paid considerable attention to the problem of ensuring the reliability of building structures at all stages of their erection and operation, reconstruction, repair and reorganization. This is due to the growing need to ensure reliable operation of unique, expensive, historically significant structures, which dismantling and replacement are much more expensive than repair or it is impossible generally. Damage to reinforced concrete structures, as a rule, is associated with corrosion, overloading of individual elements and improper operation, design and production errors. In this article, the process of examining the reinforced concrete bearing structure of the building overlap for the possibility of its reconstruction and reorganization is considered in detail, as well as the design calculation based on computer modelling in the LIRA-CAD program.

https://iopscience.iop.org/article/10.1088/1757-899X/463/4/042009/pdf

The Reliability of Building Structures Against Power and Environmental Degradation Effects

The construction industry has experienced the hugest number of changes during all century's history. Today in construction there is a huge set of scientific completions and innovative solutions that many times increase quality of works and process reliability of construction in general. This publication is devoted to an innovative element for strengthening building constructions and elements - to high-strength composite materials. Due to inevitable exhaustion of natural resources and increase in energy cost in the world the process of composite materials production in industrial is becoming more relevant, important and popular, such as fibreglass, basaltplastic, carbonoplastic. These composite materials possess sufficient characteristics on reliability, durability, profitability and that is the most important - environmental friendliness in comparison with the metal reinforcing elements. It is important that source replenishment of raw materials in modern production is possible due to processing of secondary raw materials and technogenic waste. Experience of using composite materials during strengthening building constructions, the comparative analysis from the point of ecology production and using materials, advantages of composite materials is reflected in this publication. The purpose of this publication is to show validity of using composite materials for strengthening building constructions from the point of view of reliability, profitability and also environmental friendliness in comparison with other reinforcing elements.

https://iopscience.iop.org/article/10.1088/1757-899X/365/3/032053/pdf

Technical aspects of using composite materials for strengthening constructions

Properties of new reinforcing element — composite reinforcement, are considered. Feasibility study of using this material for modernization of buildings, namely for vertical extension with additional storey, is carried out. Comparative analysis of performance is conducted for metal and composite reinforcement, as well as calculations are performed which results will be used for determination of advantages and disadvantages of this innovative reinforcing method. An important factor for development of projects of building vertical extension after quite a long operation period is a proper selection of construction materials and strength analysis considering the structures to be erected. Calculation of a floor slab erected with using composite fiberglass reinforcement is represented. Results obtained in the calculation and the analysis of the data prove high efficiency of this reinforcing method through the decrease of loads on lower storeys of the building, economic feasibility and other factors.

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Application of composite reinforcement for modernization of buildings and structures

1Mordovia N.P. Ogarev State University, 2Nizhegorodskiy N.I. Lobachevskiy State University Bolshevistskaya str. 68, Saransk, 430005. 3Moscow State University of Civil Engineering 129337, Yaroslavl highway, 26 4North Caucasian branch of the federal government’s budget educational institution of higher professional education “Belgorod State Technological University. VG Shukhov Zheleznovodskaya Street 24, Mineralnye Vody, Stavropol Territory, 357202 , Russia

/pdf/bioresistant-building-composites-on-the-basis-of-glass-1re4e61zp7.pdf

Bioresistant Building Composites on the Basis of Glass Wastes

The article considers contemporary materials and structures for construction of buildings. The article conducts an economic study of the problem of durability. It addresses the issue of increasing longevity, affecting the term of service to building structures and the efficiency of their operation. Revealed the main factors affecting the durability. It identifies measures its realisation. The method of calculation of economic efficiency of improving the durability of building constructions.

/pdf/the-effectiveness-of-materials-different-with-regard-to-54jkqj7yzt.pdf

The Effectiveness of Materials Different with Regard to Increasing the Durability

The article discusses the ways to improve the building materials’ and products’ biostability as well as their effectiveness. Impregnation of the readymade concrete and the reinforced concrete articles with special polymer compositions or monomers is one of the methods to improve the concrete properties. The article describes the ways aimed at increasing the materials biostability by introducing the fungicidal additives into their composition.

Development and Research of Methods to Improve the Biosistability of Building Materials

Recently, the frame composite materials have been developed greatly at the production introduction level. The manufacturing technology of these materials is carried out in two stages: first, large aggregates are glued into the frame, and second, the porous frame voids are impregnated with the matrix component. In this article, we studied the various aggregates’ effect on the polymer concrete frame structures properties using epoxy binders. The materials based on the quenched cullet, brickbats, granite and limestone crushed stone, and the polymer granules were considered as large aggregates. The studied properties were the strength and elastic modulus. Quantitative dependences of compressive and bending strength, elastic modulus of frame composites on the aggregate type and other prescription factors are obtained. Using the methods of mathematical experimental planning, the optimal particle size distribution for the composites with grains from quenched cullet was selected. Particular attention should be paid to the possibility of using industrial wastes in polymer concrete compositions: polymer granules, quenched cullet and brickbats. Used glass makes up about 10% of the household waste. Its reuse is usually associated with high capital costs allocated for sorting glass by color, removing stones and other impurities. Glass grinding allows to get a fine-grained filler and aggregate. Strength and deformation characteristics of the matrix compositions, frameworks and composites as a whole are determined.

Andrey Bogatov

Papers

Bioresistant Building Composites on the Basis of Glass Wastes

The Effectiveness of Materials Different with Regard to Increasing the Durability

Development and Research of Methods to Improve the Biosistability of Building Materials

Frame Polymerbetons Based on Fillers of Different Nature

Building materials based on glass waste