The active use in the production of building materials of waste after the renovation of housing is a relevant and promising direction. the load on logistics for the supply of inert materials is reduced, landfills and waste storage sites are being destroyed, and the cost of building materials from recycled materials is being reduced. The use of recycled clay bricks allows to solve the problem of solid waste disposal, but also to reduce the environmental damage caused to the environment by mankind from the excessive development of natural resources. Finely ground brick cullet has pozzolanic properties and can be used as an additive in a cement mixture, and a large fraction is used in aggregates of cement compositions.

Keywords: Сlay brick scrap, renovation, preparation, pozzolanic activity, hydraulic activity, binder, hardening, aggregate, mortar, strength

The aim of the work is to study the possibility of using mineralized fiber as a damping additive in the production of paving slabs and curbs. Fiber mineralization was carried out with an electrolyte solution and sodium silicate. An assessment was made of the physical properties of fiber and their influence on the physical and mechanical properties of fine-grained concrete, hardening both under normal conditions and after heat and moisture treatment. It was revealed that the strength of concretes modified with fiber and hardening under normal conditions is higher than concretes that have undergone heat and moisture treatment by 4.2%.

Keywords: fiber, organic compounds, sugars, cement clinker, blocking, hardening, hydration, strength, paving slabs

The purpose of the study is to determine an effective modifier of the structure of a slag-alkaline stone, characterized by a low value of linear shrinkage and a decrease in cracking in the early stages of hardening. Ground blast furnace slags were activated with aqueous solutions based on sodium silicate and caustic soda. Fly ash and zeolite-containing clay were used as modifiers of the cement stone structure at a dosage of 5, 10 and 15% of the binder consumption. The results of the study showed that an increase in fly ash content does not significantly affect the setting time. The use of zeolite-containing clay as a slag-alkali binder modifier makes it possible to regulate the setting time of the binder at a dosage of more than 10%. Cracking of the slag-alkaline matrix was observed only for mixtures without fly ash and zeolite-containing clay.

Keywords: cement stone, slag-alkali binder, hardening activator, structure modifier, fly ash, zeolites, shrinkage, cracking

The production of Portland cement can be characterized as harmful to nature and human society, resource and energy consuming. The use of by-products of metallurgical and chemical production in obtaining a hydraulic binder is a relevant and promising direction. binder for strengthening and stabilizing the soil of the road base The article investigates the regularities of the initial hardening processes of finely ground slag occurring during structure formation as a result of activation with alkaline solutions and sodium silicates.

Keywords: granular slag, normal density, setting time, activation, awakening of hydraulic activity, binder, hardening

Porous concrete is a new type of concrete with high permeability of water flows. It is advisable to use this type of concrete in road construction for the device filtration zones. This will allow to remove water from the carriageway, especially in places where there is no storm sewer. Infiltration of water flows through concrete pavement coatings contributes to their rapid removal from the surface, reducing slipperiness and water planning. The use of macroporous concrete will minimize flooding of car parks and roads. The results of the study confirm that permeable concrete surfaces function stably over time and are not silted with sand and soil.

Keywords: porous concrete, permeable surface, filtration, storm sewage, water

The use of ultrathin sand as the main raw material in the production of concrete made by semi-dry molding is relevant for many regions of Russia due to the lack of sand with a high modulus of grain size and solid stone. The article presents the results of the analysis of the possible use of sands with a modulus of particle size Mcr = 0.8-1.4 in pressed small-sized concrete paving products for sidewalks. Replacing ordinary sand up to 80% with fine-grained does not reduce strength and performance properties. The transition to fine-grained and silty sands reduces the cost of production.

Keywords: concrete, semi-dry pressing, knitting, ultra-fine sand, hyper-plasticizer, strength

Efficiency, quality and safety of construction are formed by the levels of management and integration relations between the enterprises of the industry and Federal services. Multidirectional construction business contributes to the formation of various types of inter-industry relations. Currently, intra-industry relations are dominant, which are typical for cluster formations in market conditions of development under the existing uncertainty. Effective management of supply and demand affects the stable profit of the construction industry.

Keywords: construction, management, territorial features, industry features, production, competition, integration associations

science is the driving force of the development of the modern state, the successful implementation of its achievements in the production and economic activities can improve everyday life. However, there is a lack of funding for research, low level of interest in new developments and young people in research activities, the lack of integration platforms for interdisciplinary cooperation in the packaging of projects and acceptable conditions for support of small and medium-sized businesses. In order to avoid the loss of scientific potential, it is necessary to take centralized measures on the part of authorities and economic entities

Keywords: scientific activity, applied science, federal budget, regional budget, inter-faculty associations, business

Comfortable urban environment currently determines the economic development of the region as a whole, affects the socio-political situation, the rate of migration and investment. The analysis showed that the majority of municipalities have an imbalance in the factor space, which negatively affects the development of non-productive sectors of the economy and the main sectors of the economy. Open dialogue of the population with the city authorities allows to form the most effective methods on the way of creation of favorable regional climate, to make it competitive and to develop priority business directions.

Keywords: comfortable urban environment, competitiveness, population welfare, economic development, factor space

The material is based on the results of surveys of business activity of Russian enterprises and organizations in the Chelyabinsk region, including: large and medium-sized industrial enterprises; construction firms; organizations of retail trade, services, tourism and catering. The obtained conclusions as a result of the conducted researches are based on the information of the official bodies of the Chelyabinsk region, Rosstat management and reports of enterprises. As a result, the conclusion was made about the need to improve the tourism infrastructure, the widespread introduction of modern technologies into the tourism business, with the creation of a single tourist cluster in the Chelyabinsk region with an orientation to cross-sectoral cooperation. The creation of a regional tourist cluster contributes to the most effective use of the integration process in the allocation of investment resources in the region.

Keywords: factors, production, construction, tourism, investment, attractiveness, tourist cluster, management.

To solve the economic, technical, environmental and social problems of the region, it is expedient to create a regional inter-branch finance and construction forestry cluster (IFSLP). The creation of a regional IFSLP facilitates the most effective use of the integration process in the allocation of investment resources in the region. Cluster education allows: - to create investment attractiveness of the region; - to organize new jobs - to attract young professionals with higher education - to use innovative developments - to increase deductions to the local budget - to clean the forest from dead wood and substandard timber, to generate heat and electricity, - to create a competitive export product.

Keywords: resource-producing complex, regional interindustry financial and construction forestry cluster, innovation, investments, forestry direction, construction materials

The imbalance in the development of the forestry, with respect to the valuable and non-standard woods used by the construction enterprises, entails an ecological catastrophe in the regions. For the wide use of hardwood in the production of building materials and products, a technology has been developed to direct the development of operational properties. Modification of the structure of the wood due to volumetric impregnation of capillaries helps to reduce water absorption, increase fire resistance and biostability of wood, and also contributes to meeting the growing needs of producers of wood-based building materials in a cheap local raw material quickly renewable resource base

Keywords: wood, construction, fire resistance, hardwoods, modified wood, biosphere

Investigations were conducted to assess the corrosion resistance of stabilized sandy loam soil with ground granulated slags in organic media: mineral oil, gasoline and diesel fuel. A model is proposed for an accelerated study of the corrosion resistance of concretes and other building materials under the conditions of the dynamic effect of the medium under investigation on the test material. The obtained results of X-ray phase analysis of samples and electron microscopic studies suggest that as a result of hydration of minerals of ground slag and ground, low-base CSH (B) hydrosilicates are formed, the sizes of new formations and inclusions on ETF slag are less than on CMP slag.

Keywords: ground granulated slags, low-basic formations, corrosion resistance, slag-alkali binder, oil, porosity, dynamic model

Considered the work to be undertaken during the reconstruction of the road network of the city of Penza, and, in particular, the viaduct over the river Sura. The analysis of the major defects giving rise to the reconstruction of the bridge. Presents the main decisions and the progress of the works themselves.

Keywords: the bridge span, corrosion, bearing capacity, pile wrap