بررسی موردی تاثیر تغییرات ریزساختاری کلینکر به کمک مطالعات میکروسکوپی بر مشخصات فنی سیمان و عملکرد آن در بتن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 رئیس مرکز تحقیق و توسعه سیمان تهران

2 استادیار مرکز تحقیقات راه، مسکن و شهرسازی

3 رئیس آزمایشگاه فیزیک مجتمع صنعتی سیمان تهران

چکیده

سهم فازها و کیفیت شکل‌گیری بلورهای کلینکر تاثیر بسزائی بر عملکرد سیمان و بتن حاصل از آن دارد؛ حال آنکه تولیدکنندگان سیمان و بتن غالبا ارزیابی خود برای آنالیز شیمی یا XRF و مقادیر فازها به کمک روابط بوگ پایه‌گذاری می‌نمایند. از این‌رو در این مطالعه گسترده کاربردی، به ردیابی ارتباط نتایج مطالعات میکروسکوپی با مشخصات فنی سیمان و عملکرد آن در بتن پرداخته شده است. در مرحله اول تعداد یکصد نمونه کلینکر پرتلند نوع2 از سیمان تهران تهیه شدند و بر روی آنها مطالعات میکروسکوپی و آنالیز شیمیائی انجام گردید. کلیه نمونه‌های کلینکر در آسیای صنعتی سایش گردید و بر روی نمونه‌های سیمان آزمایش‌های فیزیکی و مکانیکی انجام گرفت. سپس مخلوطهای بتن آزمایشگاهی ساخته شدند تا مشخصات فنی سیمان و عملکرد آنها در بتن ارزیابی گردد. بر اساس نتایج این عملیات آزمایشگاهی گسترده، بطور نوآورانه نتایج میکروسکوپی به صورت کمی (عددی) جمع‌بندی شد و ارتباط بین شاخص‌های میکروسکوپی و خصیصه‌های مخلوطهای بتن مشاهده و روابط آن ارائه گردید.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A Case Study of the Effect of Clinker Microstructural Changes with the Help of Microscopic Studies on the Technical Characteristics of Cement and its Performance in Concrete

نویسندگان [English]

  • Ali Akbar Kafash Bazari 1
  • Mehdi Chini 2
  • Zivar Nikfal 3
1 Chief of Laboratory of research and development of Tehran cement Co
2 Assistant Professor of Road, Housing and Urban Development Research Centre, Tehran, Iran
3 Chief of Laboratory of physic of Tehran cement Co
چکیده [English]

The portion of phases and the quality of clinker crystal formation have a great impact on the performance of cement and concrete obtained from it; however, cement and concrete manufacturers often base their evaluation on chemical analysis or XRF and the values of phases with the help of Bogue formula. Therefore, in this extensive applied study, the relationship between the results of microscopic studies and the technical characteristics of cement and its performance in concrete has been traced. In the first stage, one hundred samples of Portland clinker type II were prepared from Tehran cement and microscopic studies and chemical analysis were performed on them. All clinker samples were grinded in industrial mill and physical and mechanical tests were performed on cement samples. Then laboratory concrete mixtures were made to evaluate the technical characteristics of cement and their performance in concrete. Based on the results of this extensive laboratory operation, innovatively, the microscopic results were summarized quantitatively (numerically). The relationship between the microscopic indicators and the properties of concrete mixtures was observed and its relationships were presented.

کلیدواژه‌ها [English]

  • linker
  • Cement
  • Microscope
  • Concrete

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  • تاریخ دریافت: 16 آبان 1401
  • تاریخ بازنگری: 20 بهمن 1401
  • تاریخ پذیرش: 01 اسفند 1401

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