Pore Structure Characterization of Hardened Cement Paste by Multiple Methods
المؤلفون المشاركون
Song, Yang
Zhou, Jun-wen
Bian, Zheng-ning
Dai, Guo-zhong
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-18، 18ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-12-12
دولة النشر
مصر
عدد الصفحات
18
الملخص EN
Pore structure characterization of hardened cement paste is important to concrete mechanical and transport properties.
Hence, we apply indirect methods (NS, MIP, and NMR) and direct methods (XCT, FIB/SEM, and HIM) to provide a general view of the pore structure of hardened cement paste.
The results show that the 3D pore network of hardened cement paste is isolated in microscale yet is largely connected by large capillary pores, small capillary pores, and microcracks in nanoscale.
In indirect methods, MIP and NMR have a wide measurement range and permit observing most of the porous volume with an average porosity of 8.4–9.9% of hardened cement paste.
In contrast, direct methods have a relatively narrow measurement range and thus lead to a large porosity scattering of 1.8–16.4%.
The pore size distribution (PSD) curves by indirect methods show that the pore structure is mainly concentrated in three sections of 1–10 nm, 10–100 nm, and around 10 μm, which correspond to the imaging range of HIM, FIB/SEM, and XCT.
However, FIB/SEM implies that the most porous part of hardened cement paste (10–100 nm) is underestimated by MIP due to the “ink-bottle” effect.
Another “underestimation” of NMR is because C-S-H gels swell during the wetting, and the swelling separates the capillary pores into smaller ones.
The microcracks induced by sample preparation contribute 0.1-0.2% (XCT) and 4.5–8.1% (FIB/SEM) of porosity to the porous volume of cement paste, but they have limited influence on the pore size distribution and pore connectivity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Song, Yang& Zhou, Jun-wen& Bian, Zheng-ning& Dai, Guo-zhong. 2019. Pore Structure Characterization of Hardened Cement Paste by Multiple Methods. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1119811
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Song, Yang…[et al.]. Pore Structure Characterization of Hardened Cement Paste by Multiple Methods. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1119811
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Song, Yang& Zhou, Jun-wen& Bian, Zheng-ning& Dai, Guo-zhong. Pore Structure Characterization of Hardened Cement Paste by Multiple Methods. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1119811
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1119811
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