مشخصات مقاله:
عنوان فارسی مقاله:
تاثیر خمیر ماسه سیمانی ریز در تهیه مواد سیمانی
عنوان انگلیسی مقاله:
Influence of fine cement sand paste in preparation of cementitious materials
کلمات کلیدی مقاله:
منطقه انتقال سطحی، سیمان ریز، سیمان سولفالومینات، تصویر J، محصولات هیدراتاسیون، ملات، سیمان ریز، MIP، SEM، TGA
کلمات کلیدی انگلیسی:
Interfacial transition zone – Fine cement – Sulfoaluminate cement – Image J – Hydration products – Mortar – Fine cement – MIP – SEM – TGA
مناسب برای رشته های دانشگاهی زیر:
مهندسی عمران
مناسب برای گرایش های دانشگاهی زیر:
سازه
وضعیت مقاله انگلیسی و ترجمه:
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فهرست مطالب:
Abstract
Graphical abstract
Keywords
1. Introduction
2. Materials and methods
2.1. Characteristics of raw material
2.1.1. Cement
2.1.2. Sand
2.1.3. Fine CSA
2.2. Methods
2.2.1. Fluidity
2.2.2. Strength
2.2.3. Hydration heat
2.2.4. Thermogravimetric analysis
2.2.5. MIP
2.2.6. SEM
3. Results and analysis
3.1. Fluidity
3.2. Impact of fine cement sand paste on strength
3.3. Isothermal calorimetry
3.4. Thermogravimetric analysis
3.5. MIP analysis
3.6. SEM analysis
3.7. Image J analysis
4. Discussion
5. Conclusions
Declaration of Competing Interest
Acknowledgments
References
قسمتی از مقاله انگلیسی:
1. Introduction
Fine ordinary Portland Cement (OPC) exhibits high early heat of hydrations and contributes to a good strength development in cementitious composites [1]. The replacement of OPC cement by materials such as silica fume, slag, carbon Nano-tubes, ceramic waste, and fine kaolinite sand at optimum content resulted in improved microstructural and strength properties [2–4]. It is reported that by replacement of 20% fine ground OPC in conventional OPC resulted in increased strength, decreased porosity, and improvement of the interfacial transition zone (ITZ) as compared to that of conventional OPC system [5]. Previous studies showed that by deploying fine materials as a replacement in cementitious composites exhibit good energy absorption capacities [6–8]. Past research shows that it’s difficult to store and develop fine OPC as it exhibits high carbon dioxide emissions which are not environment-friendly [9]. Another problem is the requirement of grinding agents at optimum values to have good fine cement [10]. Also, few studies had been done to reduce carbon emissions in the cement industry [11]. The calcium sulfoaluminate cement (CSA) is considered environment-friendly materials since their manufacturing process releases less carbon dioxide emissions into the atmosphere than that of OPC [12]. The strength development of CSA is also relatively higher than OPC cement at early ages [13]. CSA cement needs less firing temperatures about 1230–1350 C, and during calcination, it gives lower calcium oxide contents which result in less carbon dioxide emissions [14]. CSA cement after 28 days of curing exhibits good porosity behavior as compared to that of conventional OPC [15]. Tan et al.