کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6715393 | 1428740 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of superfine ettringite on the properties of sulphoaluminate cement-based grouting materials
ترجمه فارسی عنوان
تأثیر اترن بیوتی فوق العاده اکسید روی خواص مواد سولفوآلومینات سیمان بر اساس
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کلمات کلیدی
اتترینیت فوقالعاده، استحکام فشاری، زمان تنظیم، سیمان سولفوآمینیته، مواد پرکننده،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Superfine ettringite (S-ettringite) synthesized in this research presents same structure with the ettringite produced by the hydration of cement, which is expected to promote the hydration of sulphoaluminate cement-based materials. There are few literature reports on laboratory synthesis of superfine ettringite. In this paper, preparation of S-ettringite via separate nucleation and aging steps method by introduction of citric acid is presented. The effect of the S-ettringite on hydration, microstructure and properties of CSA cement-based grouting materials (CBGM) was experimentally investigated. Results show that specimens containing S-ettringite displayed a significant improved performance with regard to compressive strength at early and later ages and setting time. Compared to the control specimen, 4-h compressive strength increased by 380% and initial setting time shortened by 55.6% when 4â¯wt% S-ettringite was added, respectively. Due to the crystallization inducting effect and seed effect, the addition of S-ettringite changed the morphology of ettringite, and meanwhile promoted the hydration exothermic rate and increased the amount of hydration products, which thus generate higher compressive strength and shorter setting time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 166, 30 March 2018, Pages 723-731
Journal: Construction and Building Materials - Volume 166, 30 March 2018, Pages 723-731
نویسندگان
Haiyan Li, Xuemao Guan, Xuyang Zhang, Peng Ge, Xingxing Hu, Dinghua Zou,