Preparation and Performance of a New-Type Alkali-Free Liquid Accelerator for Shotcrete
المؤلفون المشاركون
Fang, Jianhong
Sheng, Yanping
Xue, Bin
Li, Haibin
Qiao, Yunyan
Chen, Huaxin
Xu, Anhua
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-05-17
دولة النشر
مصر
عدد الصفحات
9
الملخص EN
A new type of alkali-free liquid accelerator for shotcrete was prepared.
Specifically, the setting time and strength and shrinkage performance of two kinds of Portland cement with the accelerator were fully investigated.
Moreover, the accelerating mechanism of alkali-free liquid accelerator and the hydration process of the shotcrete with accelerator were explored.
Results show that alkali-free liquid accelerator significantly shortened the setting time of cement paste, where the initial setting time of cement paste with 8 wt% of the accelerator was about 3 min and the final setting time was about 7 min.
Compressive strength at 1 day of cement mortar with the accelerator could reach 23.4 MPa, which increased by 36.2% compared to the strength of cement mortar without the accelerator, and the retention rate of 28-day compressive strength reached 110%.
In addition, the accelerator still shows a good accelerating effect under low temperature conditions.
However, the shrinkage rate of the concrete increased with the amount of the accelerator.
5~8% content of accelerator is recommended for shotcrete in practice.
XRD and SEM test results showed that the alkali-free liquid accelerator promoted the formation of ettringite crystals due to the increase of Al3+ and SO42- concentration.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Sheng, Yanping& Xue, Bin& Li, Haibin& Qiao, Yunyan& Chen, Huaxin& Fang, Jianhong…[et al.]. 2017. Preparation and Performance of a New-Type Alkali-Free Liquid Accelerator for Shotcrete. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1123519
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Sheng, Yanping…[et al.]. Preparation and Performance of a New-Type Alkali-Free Liquid Accelerator for Shotcrete. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1123519
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Sheng, Yanping& Xue, Bin& Li, Haibin& Qiao, Yunyan& Chen, Huaxin& Fang, Jianhong…[et al.]. Preparation and Performance of a New-Type Alkali-Free Liquid Accelerator for Shotcrete. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1123519
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1123519
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