کامپوزیت های مبتنی بر سیمان با الیاف سلولزی بامبو
ترجمه نشده

کامپوزیت های مبتنی بر سیمان با الیاف سلولزی بامبو

عنوان فارسی مقاله: خواص خمشی و تحلیل رفتار تأثیری کامپوزیت های مبتنی بر سیمان پر شده با الیاف سلولزی بامبو
عنوان انگلیسی مقاله: Flexural properties and impact behaviour analysis of bamboo cellulosic fibers filled cement based composites
مجله/کنفرانس: مصالح ساختمانی و ساخت و ساز – Construction and Building Materials
رشته های تحصیلی مرتبط: مهندسی پلیمر، مهندسی عمران
گرایش های تحصیلی مرتبط: مهندسی مواد مرکب، سازه
کلمات کلیدی فارسی: الیاف سلولزی بامبو، کامپوزیت های مبتنی بر سیمان، خواص خمشی، رفتار تاثیری، الگوی شکست
کلمات کلیدی انگلیسی: Bamboo cellulosic fibers، Cement based composites، Flexural properties، Impact behaviour، Failure pattern
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.conbuildmat.2019.06.029
دانشگاه: School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, PR China
صفحات مقاله انگلیسی: 12
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 4.686 در سال 2018
شاخص H_index: 129 در سال 2019
شاخص SJR: 1.522 در سال 2018
شناسه ISSN: 0950-0618
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12400
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست مطالب (انگلیسی)

Abstract

1-Introduction

2-Materials and methods

3-Results and discussion

4-Conclusions

Conflict of Interest Statement

Acknowledgements

Appendix A. Supplementary data

Research Data

References

بخشی از مقاله (انگلیسی)

Abstract

The flexural properties and impact resistance of the composites with bamboo cellulosic fiber (BF) weight fractions ranging from 4% to 16% was investigated using a universal testing machine and a full instrumented drop weight impact system, respectively. The effect of addition of BF on the flexural properties and impact resistance of the composites was estimated according to max flexural strength, fracture toughness, the contact force, failure pattern and absorbed energy. On the basis of the above results, the impact behaviour of the specimens with 12 wt% BF was examined from the point of view of the impact energy change, the deformation feedback and the absorbed energy. Additionally, impact damage morphology and extent were analyzed using the digital camera and an industrial microfocus computed tomography (CT) system. The results show that BF reinforced cement based composites have higher fracture toughness and impact energy absorbility, the fracture toughness and absorbed energy of the specimens with 4–16 wt% BF are higher by 2.7–45٫9 times and 2–24 times than that of the control specimen, respectively. However, due to fibers agglomeration resulted from fibers addition beyond certain content, max flexural strength and impact resistant of the composites no further increase. Furthermore, the different impact energy leads to the different failure patterns and energy absorption modes: at low impact energy, the main energy absorption modes are the debonding between fiber and the matrix; with the increase of the impact energy, the main energy absorption modes are delamination and BF breakage.

Introduction

In recent years, utilization of natural fibers in cement based composites has attracted increasing attentions, due to their many advantages over traditional fibers, such as biodegradability, economical and eco-friendly, etc. [1–5]. And natural fibers have already been considered as potential alternatives to traditional fibers (steel fiber, polymer fibers, glass fiber) [6]. Many studies in previous references have reported the influence of natural fibers on the properties of cement based composites, such as flexural properties [7–9], crack resistance [10,11], durability [12–14] and impact resistance [15–17], and the results show addition of the natural fibers can remarkably improve the toughness of the cementitious materials. Generally, the capacity of absorption energy of the composites is defined as ‘‘toughness”, which is very important for evaluating the service behavior of composite materials under actual conditions when fibers reinforced composites are subjected to static, dynamic or fatigue loading [15]. It is well known that the impact test is a method to evaluate the toughness and ductility of cement based materials [18], while the impact strength is a specific parameter to measure the toughness of materials under dynamic impact loading.