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

کفاش بازاری, مهندس علی اکبر; چینی, مهدی; نیک فال, زیور

doi:10.30478/jcsm.2023.368888.1299

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

نوع مقاله : مقاله پژوهشی

نویسندگان

مهندس علی اکبر کفاش بازاری ¹

مهدی چینی ²

زیور نیک فال ³

¹ رئیس مرکز تحقیق و توسعه سیمان تهران

² استادیار مرکز تحقیقات راه، مسکن و شهرسازی

³ رئیس آزمایشگاه فیزیک مجتمع صنعتی سیمان تهران

10.30478/jcsm.2023.368888.1299

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

کلینکر

سیمان

میکروسکوپی

بتن

موضوعات

تکنولوژی بتن

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

– R. Long, S. Sprung, R. W. Davidge and D. Pearson. (1983). “Microstructure and Chemistry of Unhydrated Cements”. Developments in the Science and Technology of Hydraulic Cements (Sep. 24, 1983), pp. 43-51
Mac Gregor Miller (1979). “Clinker Microscopic Methods as a Tool for Cement Quality Control”. IEEE Transactions on Industry Applications ( Volume: IA-15, Issue: 4, July 1979)
G. Sibbick. (2015). “Cement Clinker Microscopy as an Aid to Determine Performance Differences in the Presence of Chemical Additives”. From: www.reseachgate.com
Campbell and J. Galehouse, (1991) "Quantitative Clinker Microscopy with the Light Microscope," Cement, Concrete and Aggregates 13, no. 2 (0): 94-96
Nohman Mahmud (2021). “Optimizing cement strength”. ARIF HABIB GROUP PAKISTAN, ZKG, cement, lime, gypsum
Duda, w. (1976). “Cement data book”. Volume 2.
Neville AM, Brooks JJ (2002). “Concrete Properties”. Prentice Hall
Harrisson A (2022). “Influencers of strength” from: www.cemnet.com.
Kafash, A. "Investigating the effect of physical properties of clinker on cement". Cement Scientific, Technical, Economic Monthly, 24th year, April 1997, number 235, pages 25-31.
Tadayon, A. Golbahari, A. Ahmadi, Z. (2014). "Handbook of new and special cements". Naghous Publication.
Chehargani, H. (2016 Feb). "Technology and operation handbook of the cement factory" Publications of the specialized scientific monthly of cement technology.
Neville AM, Brooks JJ (2002). "Concrete technology". Prentice Hall.
Bokaian, M. (2007). "Pocket handbook of cement engineering". Publications of Manpower Training Center of Abyek cement Industrial Complex. P. 85.
Pavel Martauz (2005).”Optimization and stabilities of clinker production”. WORLD CEMENT, December 2005, p99-106.
Linda m Hills & F Macgregor. “Burning the mix”. International cement review, September 2002, p 79-84.
Hebert Insley and Howard F. Mc Murdie. (1938). “Minor constituents in Portland cement clinker”. Part of journal of research of the national bureau of standard, Vol. 12, February 1938.
-Y Ono. (1973). “Microscopic analysis of clinker”. Onoda Cement Co., Central Research Laboratory.
Mehta, K. & Menterio, (2006). “Concrete Microstructure, Properties, and Materials”. . P207-214.
Sanusi Nuhu. (2020) “Effect of Free Lime and Lime Saturation Factor on Grind ability of Cement Clinker”. International Journal of Engineering Research and Reviews, Vol. 7, Issue1, pp.: (61-66)
Vargas Mufioz,' F. Gonzdlez Garda, M. Gonz~lez Rodriguez and M. C. Gonzdlez Vflchez. (1994). “INFLUENCE OF THE MINERALOGICAL COMPOSITION, SPECIFIC SURFACE AREA AND STRAINS - CRYSTALLITE SIZE OF ALITE ON THE COMPRESSIVE MECHANICAL STRENGTH OF PORTLAND MORTARS. I. CLINKERS OF LOW TRICALC1UM ALUMINATE CONTENTS”. Cement and Concrete Research, Vol. 24, No. 4, pp. 776-790, 1994.
Kristmann. (1977). “PORTLAND CEMENT CLINKER: MINERALOGICAL AND CHEMICAL INVESTIGATIONS PART I. MICROSCOPY. X-RAY FLUORESCENCE AND X-RAY DIFFRACTION”. CEMENT and CONCRETE RESEARCH. Vol. 7, pp. 64g-658, 1977.
H S Patel, Y Z Pathak Ravindra K. Dhir, Moray D. Newlands, and Laszlo J. Csetenyi. (2015).”MICROSTRUCTURE OF CEMENT CLINKER: ITS RELATION WITH PROCESS PARAMETERS AND EFFECT ON HYDRAULIC BEHAVIOUR”. Role of Cement Science in Sustainable Development,
GCP Applied Technologies (September 15, 2020) “The benefits of clinker microscopy”. From: www. gcpat.com
Matthias Böhm, Klaus Lipus (2015). “Evaluation of Portland cement clinker with optical microscopy - case studies III”. 15th Euro seminar on Microscopy Applied to Building Materials • 17-19 June 2015 • Delft, The Netherlands.
Raine Isaksson and Neil Taylor (2013) “living up to strength potential”. world cement 2013 September, p107-110
Soumaya Ibrahimi & Nejib Ben Jamaa & Khaoula Mliki & Mohamed Bagane (2011). “Comparative Study for Grinding of Two Cement Clinkers”. International Journal of Concrete Structures and Materials, Vol.5, No.2, pp.113~117, December 2011.
Kafash (2022) “Brown clinker core under the microscope” ICR, September 2022, p 100-102
Kafash A. & Tadayon M. (2021). “Changing colour” ICR , November 2021
Sabouri Amlashi, A. (1997) "The role of grading on clinker quality". Expert thesis, University of Elm o Sanat.
Kurt E. Peray, Joseph J. Waddell (1986). “The Rotary Cement Kiln”. Chemical Publishing Company.
Lerch and R. H. Bogue. (1934). “Heat of hydration of Portland cement pastes”. Part of bureau of standard journal of research, Vol. 12, May 1934.
Anna Emanuelson & Staffan Hansen & Erik Viggh. “A comparative study of ordinary and mineralized Portland cement clinker from two different production units: Part I: Composition and hydration of the clinkers”. Cement and Concrete Research, Volume 33, Issue 10, October 2003, Pages 1613-1621.
Paul Stutzman, Stefan Leigh (2002). “Phase Composition Analysis of the NIST Reference Clinkers by Optical Microscopy and X-ray Powder Diffraction” NIST Technical Note 1441.
Biju Mathew & Sumesh Erikandath & Gabriel Lele & Shreesh Khadilkar (2016). “PROCESS CONTROL & CLINKER QUALITY MONITORING THROUGH MINERALOGICAL AND MICRO-STRUCTURAL INDICES”. December 2016, Conference: NCB INTERNATIONAL SEMINAR ON CEMENT AND BUILDING MATERIALSAt: New Delhi.
Arthur Harrisson (2022). “Alite size and quality vs kiln conditions and raw mix” International Cement Review (ICR), August 2022, p63
INSO 389 (2019). "Portland Cement-Properties". National Standard Organization of Iran
Hilloulin & I. Bekrine & E. Schmitt & A. Loukili (2022). “Open-source deep learning-based air-void detection algorithm for concrete microscopic images”. Journal of microscopy, May 2022. Volume 286, Issue 2, Special Issue:18th Euro seminar on Microscopy Applied to Building Materials, Pages: 55-197
Mengesha Beyene & Richard Meininger (2021) “A case studies of distress mechanism(s) in a concrete structure foundation in the saturated zone and above the saturated zone”. Journal of Microscopy, October 2021 286(2).
Buehler (2010). ”Preparation of Concrete Samples for Microscopic Examination”. From: https://www.azom.com/article.aspx?ArticleID=5217.
J. Sewell & S.D.G. Campbell (2001). “PETROGRAPHIC EXAMINATION OF CONCRETE SAMPLES”. GEO REPORT No. 119
M. Roy & M.W. Grutzeck & B.E. Scheetz & G.M. Idom & Neils Thaulow & K.T. Andersen (1993). “Concrete Microscopy”. Strategic Highway Research Program National Academy of Sciences.
Karen Louise (1988) “The microstructural of concrete”. Material science of concrete, p127-161
Campbell, D. (1999). “Microscopical Examination and Interpretation of Portland Cement and Clinker”. PCA SP030. ISBN-0-89312-084-7. P145.
ASTM C1356 “Standard Test Method for Quantitative Determination of Phases in Portland Cement Clinker by Microscopical Point-Count Procedure”
ISRI 1692 (1992). "Hydraulic cements - chemical test methods - measurement of main elements" Institute of Standards and Industrial Research.
Kafash Bazari A & Chini M & Nikfal Z. (2022). “A case study of the changes in the fineness of Portland cement type 2 on the performance of high-use commercial concretes in Tehran and Alborz states”. The 6th National Conference of Cement Industry and oncoming Horizons, 12 & 13 Nov 2022, Tehran.
Guide to the National Concrete Mix Design Method" Center for Building and Housing Research, p. 33.