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Effect of Particle Size of Periclase on the Periclase Hydration and Expansion of Low-Heat Portland Cement Pastes
المؤلفون المشاركون
Deng, Min
Yan, Man
Wang, Chen
Chen, Zhiyang
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-10-09
دولة النشر
مصر
عدد الصفحات
8
الملخص EN
In this paper, low-heat Portland cement (LHC) clinkers were prepared by calcining raw materials at 1350°C for 2.0 hours, 1400°C for 1.0 hour, 1400°C for 1.5 hours, 1400°C for 2.0 hours, 1450°C for 1.0 hour, and 1450°C for 2.0 hours.
The clinkers were ground with gypsum to produce LHC.
The particle size of periclase was analysed by BSEM.
Expansion of LHC pastes due to hydration of periclase was measured.
The hydration degree of periclase in LHC pastes was quantitatively determined by XRD internal standard method and BSEM.
The results showed that the particle size of periclase was larger when clinkers were calcined at higher temperatures or for longer time.
Smaller periclase (2.60 μm) in LHC pastes tended to hydrate faster.
As a result, expansion of LHC pastes develops relatively faster.
Smaller particle of periclase in clinker tends to result in higher hydration degree of periclase in pastes cured at 20°C for 240 days, and there is a small amount of brucite appearing around periclase.
The hydration rate of 4.00 μm periclase particle in cement paste cured at 80°C is obviously faster than that in paste cured at 20°C and 40°C.
When cement paste was cured at 80°C for 7 days, the periclase was hydrated for 32.56%.
The smaller size periclase (1–3 μm) had fully hydrated when the curing age was 240 days, and a large amount of brucite was produced around the larger periclase particle.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Yan, Man& Deng, Min& Wang, Chen& Chen, Zhiyang. 2018. Effect of Particle Size of Periclase on the Periclase Hydration and Expansion of Low-Heat Portland Cement Pastes. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1119642
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Yan, Man…[et al.]. Effect of Particle Size of Periclase on the Periclase Hydration and Expansion of Low-Heat Portland Cement Pastes. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1119642
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Yan, Man& Deng, Min& Wang, Chen& Chen, Zhiyang. Effect of Particle Size of Periclase on the Periclase Hydration and Expansion of Low-Heat Portland Cement Pastes. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1119642
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1119642
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