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系統識別號 U0026-1608201223101500
論文名稱(中文) 混凝土電阻率之粗骨材效應
論文名稱(英文) Effects of Coarse Aggregates to the Electrical Resistivity of Concrete
校院名稱 成功大學
系所名稱(中) 土木工程學系碩博士班
系所名稱(英) Department of Civil Engineering
學年度 100
學期 2
出版年 101
研究生(中文) 阮凡欽
研究生(英文) Van Kien Nguyen
學號 N66997186
學位類別 碩士
語文別 英文
論文頁數 94頁
口試委員 指導教授-侯琮欽
口試委員-方一匡
口試委員-黃忠信
口試委員-王雲哲
中文關鍵字 none 
英文關鍵字 Electrical resistivity  Concrete  Aggregate  SEM  Porosity 
學科別分類
中文摘要 none
英文摘要 In this study, the influences of coarse aggregate to the electrical resistivities of concrete were investigated. Specifically, types and sizes of the aggregates were targeted as the studied parameters. Commercially available granites and marbles with various sizes of 4.75, 9.5, 12.5, and 19mm were used in the concrete mixtures, and the resistivities at the age of 28 days were investigated. Polarization induced resistivity growth during the electrical measurement were considered and experimentally nullified, such that the real bulk resistivities of concrete specimens can be obtained for comparison. Concrete specimens were made by cement mortars and several degrees (amounts) of coarse aggregates; with a fixed size of coarse aggregates used in a single specimen. Cement mortars were mixed with the water/cement ratio of 0.4, and the cement/sand ratio was held constantly at 1:1. The microstructures of certain specimen samples were obtained by Scanning Electron Microscopy so as to estimate the porosity of cement pastes, which is the primary conductive portion of cementitious materials. This was done to validate the resistivity observation. The results show that the electrical resistivities of concrete made with crushed granites were quite close to those that made with crushed marbles. Moreover, the particle size of aggregates seems to have no significant influences to concrete resistivities while it is to concrete strengths. As a partial study of nondestructive testing technologies to the performance estimations of concrete, further studies were required and we have drew a few comments.
論文目次 ABSTRACT I
ACKNOWLEDGEMENTS II
TABLE OF CONTENTS III
LIST OF TABLES VI
LIST OF FIGURES VIII
CHAPTER ONE INTRODUCTION 1
1.1 Background 1
1.2 Research Objective 3
1.3 Research Methods 3
CHAPTER TWO LITERATURE REVIEW 5
2.1 Resistivity Measurement 5
2.1.1 Theory 5
2.1.2 Polarization Effect in Cement-Based Materials 6
2.2 Effect of Raw Materials on Electrical Resistivity 10
2.2.1 Effect of Cement 10
2.2.2 Effect of Supplementary Cementing Materials 13
2.2.3 Effect of Aggregate 13
2.3 Interfacial Transition Zone 19
2.4 Electrical Conduction Mechanism of Concrete 23
2.5 Estimation of the Porosity of Portland Cements Pastes by Using SEM 23
CHAPTER THREE RAW MATERIALS AND EXPERIMENTAL METHODS 25
3.1 Raw Materials 25
3.1.1 Binder Materials 25
3.1.2 Aggregates 26
3.1.3 Water 26
3.1.4 Electrode 27
3.2 Experimental Apparatus 27
3.2.1 Specimen Mold 27
3.2.2 Electronic Balance 28
3.2.3 Grinding Machine 28
3.2.4 Instrument Used for Electrical Resistance Measurement 28
3.3 Experiment Methods 29
3.3.1 Mixing Details 29
3.3.2 Procedure of Casting Concrete Specimens 30
3.3.3 Electrical Resistance Measurement 30
CHAPTER FOUR RESEARCH RESULTS AND DISCUSSIONS 32
4.1 Experiment Results 32
4.1.1 Influence of coarse aggregate content on the electrical resistivity of concrete 32
4.1.2 Effect of Coarse Aggregate Size on the Electrical Resistivity of Concrete 34
4.1.3 Effect of the Coarse Aggregate Type on the Electrical Resistivity of Concrete 41
4.1.4 Porosity Surface Fraction of Cement Paste in Concrete 45
4.2 Discussion 54
CHAPTER FIVE CONCLUSION 56
REFERENCES 57
APPENDICES 60
Appendix A: The electrical resistivity of concrete specimens measured according to time. 60
Appendix B: BSE image and their corresponding black threshold image of cement paste 80
參考文獻 Antonio, P., Klaas, v. B., & Giovanni, L. (2003). Influence of the aggregate on the electrical conductivity of Portland cement concretes. Cement and Concrete Research, 33(11), 9.
Ash, J. E., Hall, M. G., Langford, J. I., & Mellas, M. (1993). Estimations of degree of hydration of portland cement pastes. Cement and Concrete Composites, 23(2), 7.
ASTM-C192/C192M-07. (2007). C192/C192M-07 Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory. ASTM International, 04.02.
ASTM C127-07. (2007). Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate. ASTM International, 04.02.
Bbamforth, P., Gurusamy, K. N., Price, W. F., Price, J. L., & McCarter , W. J. (1990). Non-destructive testing on new and in-place concrete. The united stated strategic highqay research program. Sharing the benefits. Conference organized by the institution of civil engineers in cooperation with U.S strategic highway research program, 29th-31st October 1990, Tara Hotel, Kensington, London. . Publication of: Elsevier Applied Science Publishers Limited, 16.
Bijen, J. (1996). Benefits of slag and fly ash Con.wuction and Building Materials,, 10(5), 6.
Bruce, J. C., Coverdale, R. T., Rudolf, A., Steven, J. F., Edward, J. G., Hamlin, M. J., & Thomas, M. (1994). Impedance Spectroscopy of Hydrating Cement-Based Materials: Measurement, Interpretation, and Application. Journal of American ceramic society, 77(11), 16.
Cao, J., & Chung, D. D. L. (2003). Electricpolarization and depolarization in cement-basedmaterials, studied by apparent electrical resistance measurement. Cement and Concrete Research, 34(3), 5.
Elsharief, A., Cohen, M. D., & Olek, J. (2003). Influence of aggregate size, water cement ratio and age on the microstructure of the interfacial transition zone. Cement and Concrete Research, 33(11), 13.
Hammond, E., & Robson, T. D. (1955). Comparison of electrical properties of various cements and concretes. The Engineer, 1, 78.
Hansson, I. L. H. H. a. C. M. (1983). Electrical resistivity measurement of portland cement based materials Cement and Concrete Research, 13(5), 9.
Hughes, B. P., Soleit, A. K., & Brierley, R. W. (1985). New technique for determining the electrical resistivity of concrete. Magazine of Concrete Research, 37(133), 6.
Hunkeler, F. (1996). The resistivity of porewatersolution—a decisive parameter of rebar corrosion and repair methods. Construction and Building Materials, 10(5), 9.
John, D. S., Thomas, O. M., & Hamlin, M. J. (2000). Effect of the Interfacial Transition Zone on the Conductivity of Portland Cement Mortars. Journal of the American Ceramic Society, 83(5), 8.
Koenders. (1997). Simulation of volume changes in hardening cement-based materials. Thesis.
Maso, J. C., & Bourdette, B. (1995). Interfacial transition zone in concrete. Advanced Cement Based Materials, 2(1), 9.
Mccarter, W. J. (1994). A parametric study of the impedance characteristics of cement-aggregate systems during early hydration. Cement and Concrete Research, 24(6), 14.
McCarter, W. J. (2002). Electrical monitoring and characterisation of cement-basedsystems. Cement and Concrete Composites, 24(5), 2.
Monfore, G. E. (1968). The Electrical Resistivity of Concrete. Journal of The PCA Research and Development Laboratories, 10(2), 14.
Nokken, M. R. (2004). Development of Capillary Discontinuity in concrete and its influence on durability. PhD Thesis, University of Toronto
Rached, M., Moya, M. D., & Fowler, D. W. (2009). Utilizing Aggregates Characteristics to Minimize Cement Content in Portland Cement Concrete. Report No. ICAR 401.
Rachel, J. D., Javed, I. B., & Sankar, B. (1996). Supplementary cementing materialsl for use in blended cements. Reseach and Development Bullentin RD112T, Portland Cement Association, Illinois, U.S.A, 106.
Thomas, M., & Wilson, M. L. (2002). Supplementary Cementing Materials For Use in Concrete PCA CD0038.
Wei, X., & Xiao, L. (2011). Influence of aggregate volume on the electrical resistivity and Properties of Portland Cement Concretes. Journal of Wuhan University of Technology-Mater. Sci. Ed, 26(5), 9.
Whittington, H. W., McCarter, J., & Forde, M. C. (1981). The conduction of electricity through concrete. Magazine of Concrete Research, 33(114), 13.
Wu, K.-R., Chen, B., Yao, W., & Zhang, D. (2001). Effect of coarse aggregate type on mechanicals properties of high-performance concrete. cement and Concrete Research, 31(10), 5.
Xiao, L. (2007). Interpretation of hydration process of concrete based on electrical resistivity measurement. PhD Thesis, The Hong Kong University of Science and Technology.
Xie Ping, J. J., Beaudoin, R., & Brousseau. (1991). Effect of aggregate size on transition zone properties at the portland cement paste interface. Cement and Concrete Research, 21(6), 7.
Yaqub, M., & Bukhari, I. (2006). Effect of size of aggregate on compressive trength of high strength concretes. 31st Conference on Our world in concrete & structures.
Zhao, H., & David, D. (1992). Quantitative backscattered electron analysis of cement paste. Cement and Concrete Composites, 22(4), 12.
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