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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Energy Efficiency of Structural Regulation of Stress-Related Characteristics of Concrete
verfasst von : Igor Bezgodov, Elena Dmitrenko
Erschienen in: International Scientific Conference Energy Management of Municipal Transportation Facilities and Transport EMMFT 2017
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Abstract
The article suggests carrying out a wide range research of efficient additives capable of regulating the physical, mechanical and rheological properties of concrete. It also provides experimental studies that prove the ability to solve this problem. Air-entraining agents can be an effective additive to reduce the modulus of elasticity and to increase the limit of the relative compression deformation. The article presents the results of short-term tests for concrete with/without NAR (neutralized air-entraining resin) additive, performed by the method of obtaining the full concrete deformation diagrams. It has shown that the introduction of an NAR additive greatly reduces modulus of elasticity and increases the limit compressive deformability of concrete. In conditions of prolonged load, the creep of pure sand concrete is compared to that of concrete with clay and lime additives. There is quite a significant increase in the creep deformation in concrete with a clay-limestone additive.