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Title: The mechanical properties of the expandable polyurethane resin based on its volumetric expansion nature // Magazine of Civil Engineering. – 2020 № 6 (98)
Creators: Sabri M. M.; Shashkin K. G.
Imprint: 2020
Collection: Общая коллекция
Subjects: Строительство; Строительные материалы и изделия; resins; polyurethane resins; foamable resins; mechanical properties; volumetric expansion; resin injection technology; soil stabilization; смолы; полиуретановые смолы; вспениваемые смолы; механические свойства; объемное расширение; технологии впрыска смол; стабилизация грунтов
UDC: 691
LBC: 38.3
Document type: Article, report
File type: PDF
Language: English
DOI: 10.18720/MCE.98.11
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)

Allowed Actions: Read Download (1.2 Mb)

Group: Anonymous

Network: Internet

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The expandable polyurethane resin is an innovative material used in the field of soil stabilization and foundation restoration. The injection technology using the expandable polyurethane resin is an effective way that raises the foundations rapidly, strengthening the soil beneath. Nevertheless, different technical aspects have not been studied yet, which might affect the lifting and stabilization process, such as the density of the resin formed in the massive of the injected soils. The density of the resin formed in the massive of the injected soils during the injection process is varied due to the expansion nature of the resin when mixed proportionally controlled by the amount of the injected resin, the injection pressure, the injection temperature, and other factors. Obviously, the differences in resin densities lead to a variation of the resin mechanical properties; consequently, it affects the desired lifting and strengthening results gained. The article demonstrates the results of a laboratory experiment that has been conducted to investigate the mechanical properties of an expandable polyurethane resin consists of two components based on its volumetric expansion ratios controlled by the amount of the injectable resin. The density of the resin gained for each expansion ratio has been obtained and given in this article. The stress-strain diagrams of the resin for various densities and expanding ratios are incorporated. The results were interpreted, and the strength-density relationship of the resin has been established and introduced.

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Table of Contents

  • The mechanical properties of the expandable polyurethane resin based on its volumetric expansion nature
    • 1. Introduction
    • 2. Methods and Materials
      • 2.1. The aim of the experiment
      • 2.2. Samples preparation
      • 2.3. Determination of the resin densities
      • 2.4. Samples testing using the uniaxial compression test
    • 3. Results and Discussion
    • 4. Conclusion
    • 5. Acknowledgment

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