Compression Characteristics and Constitutive Model of Low-Exotherm Modified Polyurethane Grouting Materials
المؤلفون المشاركون
Zhang, Juan
Wang, Yanjun
Xu, Shengjie
Wang, Shuangjie
Zhong, Yanhui
Zhang, Bei
Zhao, Liguo
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-11-09
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
In permafrost regions, ordinary polyurethane grouting materials are not suitable for the repair and reinforcement of road engineering due to the release of a large amount of heat during the reaction process.
In this study, the polyurethane grouting material is modified by changing the catalyst, blowing agent, and reaction scheme to reduce the heat released during the reaction.
The stress-strain curves of low-exotherm polyurethane grouting material specimens possessing various densities are investigated by means of unconfined uniaxial compression experiments, and the stress-strain relationships and failure mode of low- and high-density specimens are analysed.
The characteristics of three stages in the compression process of the materials, namely, the elasticity stage, platform stage, and densification stage, are studied.
The compressive strength increases with the increase in density, and the brittle failure of materials with higher density is more obvious.
From the microscopic point of view, combined with the experimental results, the constitutive model of low-exotherm modified polyurethane grouting material was established.
The established model is in good agreement with the experimentally measured stress-strain curves and effectively predicted the stress-strain characteristics for a specimen possessing a different density.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Xu, Shengjie& Wang, Shuangjie& Zhong, Yanhui& Zhang, Bei& Zhang, Juan& Wang, Yanjun…[et al.]. 2020. Compression Characteristics and Constitutive Model of Low-Exotherm Modified Polyurethane Grouting Materials. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1121066
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Xu, Shengjie…[et al.]. Compression Characteristics and Constitutive Model of Low-Exotherm Modified Polyurethane Grouting Materials. Advances in Civil Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1121066
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Xu, Shengjie& Wang, Shuangjie& Zhong, Yanhui& Zhang, Bei& Zhang, Juan& Wang, Yanjun…[et al.]. Compression Characteristics and Constitutive Model of Low-Exotherm Modified Polyurethane Grouting Materials. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1121066
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1121066
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر