Insulation systems for structures on pile supports

Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). The aim of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The resulting models were analysed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded foamed polystyrene along the basement part and the floor structure, and with rolled foamed polyethylene (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards

Insulation systems for structures on pile supports

Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). The aim of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The resulting models were analysed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded foamed polystyrene along the basement part and the floor structure, and with rolled foamed polyethylene (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards

Effective polymer concrete on waste concrete production

Finish materials in facade systems are experiencing significant stress associated with atmospheric and mechanical influences. The use of tiles with high durability and the ability to relax deformations will allow to obtain efficient cladding for building systems. The article presents the results of the selection of compositions and technologies of a composite material based on finely ground highly active waste produced by portland cement, mineral binder, additives based on polycarboxylic ether MC-6955, and polymer additive MC-Adhesive. MC-Adhesive is a polymer additive used for: a significant increase in flexural strength; reduce the elastic modulus; increase water resistance; increase the concrete mix cohesion; making coatings with high requirements for abrasion, low dusting and high resistance to aggressive substances.The article presents the results of research methods of selection of compositions of composite polymer concrete. The strength characteristics of polymer concrete with an average density of 2370-2450 kg/m3 are most dependent on the consumption of fine waste and polymer additives. The nomogram obtained as a result of an active experiment makes it possible to evaluate the dependence of the strength on these factors and select their optimal ratio

Insulation systems for structures on pile supports

Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). This problem is com-pounded by construction in cold regions. The goal of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The construction of such buildings is practiced on problem soils. The resulting models were analyzed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded polystyrene (XPS) foams along the basement part and the floor structure, and with roll polyethylene (PE) foams (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards

Theoretical principles of creation of cellular concrete with the use of secondary raw materials and dispersed reinforcement

The article outlines and substantiates the theoretical principles of the creation of cellular concrete reinforced with mineral fiber with the use of secondary products of housing renovation. The advantages provided by the dispersive reinforcement are the reduction in the economic costs of the construction of facilities, ensuring their reliable and durable operation. In this case, an important contribution is the alkali resistance of mineral fibers, the evaluation of which was carried out using the technique of an elemental composition based on the use of a spectrometer. On an example of research of technology of cellular concrete reinforced with alkali-resistant mineral fiber; Methods for evaluating the importance of factors characterizing technological processes, constructing polynomials of nonlinear regression, analytical optimization, selection of composition and evaluation of characteristics of raw components were tested. Reinforced with mineral fiber constructions can be built on weak grounds and effectively solve the problems of saving energy and raw materials

Theoretical principles of creation of cellular concrete with the use of secondary raw materials and dispersed reinforcement

The article outlines and substantiates the theoretical principles of the creation of cellular concrete reinforced with mineral fiber with the use of secondary products of housing renovation. The advantages provided by the dispersive reinforcement are the reduction in the economic costs of the construction of facilities, ensuring their reliable and durable operation. In this case, an important contribution is the alkali resistance of mineral fibers, the evaluation of which was carried out using the technique of an elemental composition based on the use of a spectrometer. On an example of research of technology of cellular concrete reinforced with alkali-resistant mineral fiber; Methods for evaluating the importance of factors characterizing technological processes, constructing polynomials of nonlinear regression, analytical optimization, selection of composition and evaluation of characteristics of raw components were tested. Reinforced with mineral fiber constructions can be built on weak grounds and effectively solve the problems of saving energy and raw materials