卷 5, 编号 11 (2017)
- 年: 2017
- ##issue.datePublished##: 05.09.2017
- 文章: 10
- URL: https://ogarev-online.ru/2311-2468/issue/view/18513
完整期次
Physical and mechanical properties and chemical resistance of composites based on cement binders and sulfate-silicate additive: an experimental study
摘要
The article provides the test results the effect of sulfate-silicate additive on the physical and mechanical properties and chemical resistance of composites based on cement binders. The tests show a possibility of obtaining an additive based on zeolite-containing rock, which increases the strength of composites at hardening.
New materials for shells of vacuum insulation panels
摘要
The article presents an analysis of the shells of vacuum insulating panels. The advantages and disadvantages of packaging materials used for vacuum insulation are studied. The advantages of vacuum insulation panels and their use are considered.
High-strength fine-grained concretes based on natural and technogenic raw materials
摘要
The article shows the use of natural and technogenic sands in the formulation of modified high-strength fine-grained concretes. The developed compositions of high-strength fine- grained concretes of B60-B90 classes include strictly selected components of the concrete mix consisting of binders, fillers, and targeted high-quality additives.
International practices of high-rise buildings design: a review
摘要
The article provides a review of the best international practices of high-rise buildings design. An analysis of constructive decisions of sky-scrapers of the USA and Asian countries is carried out. The tendencies of modern high-rise construction are revealed.
The use of local raw material resources at residential building reconstruction
摘要
The article includes the results of an on-site survey of an apartment building. The list of works that must be done for further safe operating of the house is provided. Solutions with a zeolite-containing filler for injecting cracks are proposed. The possibility of using diatomite in the composition of dry construction mixtures is considered.
The impact of hardener on elastic-strength parameters of epoxy polymers exposed to natural conditions
摘要
The article provides the results of testing polymer composites based on epoxy binders and exposed to natural climatic factors of the temperate climate. The analysis of summary solar radiation and ultraviolet radiation ranges A and B is completed. The effect of exposure duration and intensity of actinometrical parameters on the elastic-strength properties of polymer composites is studied. The coefficients of the exponential equation describing the change of relative strength and extension of epoxy composites under tension are calculated.
Destructive testing methods for quality control of construction structures
摘要
The article considers the main principles of quality control of construction joints in the modern conditions. The test results of destructive quality control of critical structures are presented.
Hardening of epoxy composites depending on the degree of microcalcite filling and fractional composition: an analysis of the process exothermicity
摘要
The article provides the test results of the effect of different fractions and the degree of filling with microcalcite on the hardening of epoxy composites. The change in the maximum temperature of heating and the time of its attainment depending on the fractional composition and the mass content of the filler in the composition of polymer composites is analyzed.
The use of complex additives in cement concretes: current issues
摘要
The paper presents the test results of the use of chemical additives in cement compositions. It has been established that the chemical additives have a significant effect on the improving of rheological characteristics and basic physical and technical properties of modified cement compositions.
Analysis of sedimentation at interaction of filled cement stone with magnesium salts
摘要
The tests show the effect of the degree of filling with zeolite-containing rock on the strength of cement composite at interaction with magnesium sulphate and magnesium chloride. The pH value obtained as a result of the interaction of cement composites with magnesium salts is analyzed. The effect of an aggressive medium on the content of free magnesium and calcium ions in the sediment filtrate is considered.