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Over three billion metric tons of cement are produced annually worldwide, making concrete the most extensively used construction material. Self-sensing, or smart, cement allows real-time monitoring of performance through the entire service life of a concrete structure, for the detection of changing stresses, contamination, excessive temperature, gas leaks and pre-seismic activity. This is achieved by adding a very small proportion of conductive or semi-conductive fibers, such as carbon fibers to the bulk cement, making it piezoresistive, and enabling changes in the concrete's electrical resistivity in response to shear stress and strain to be monitored.
This state-of-the-art reference work presents experimental results with a realistic theoretical framework, for cement manufactures, concrete technologists and contractors as well as researchers.
List of contents
1. INTRODUCTION 2. MATERIAL CHARACTERIZATION AND REAL-TIME MONITORING 3. RHEOLOGICAL BEHAVIOR OF CEMENT WITH ADDITIVES 4. CEMENT CURING RESISTIVITY AND THERMAL PROPERTIES 5. PIEZORESISTIVE SMART CEMENT 6. CHEMO-THERMO-PIEZORESISTIVE SMART CEMENT 7. SMART CEMENT WITH NANOPARTICLES 8. GAS LEAK DETECTION, FLUID LOSS AND SENSING DYNAMIC LOADINGS USING THE SMART CEMENT 9. LABORTORY AND FIELD MODEL TESTS 10. SMART CEMENT GROUTS 11. SMART FORM CEMENT 12. CONCRETE WITH SMART CEMENT BINDER 13. CONCLUSIONS 14. REFERENCES
About the author
Cumaraswamy Vipulanandan (Vipu) is a Professor of Civil and Environmental Engineering with endowed professorship at the University of Houston, where he is the Director of the Center for Innovative Grouting Materials and Technology and a former department chairman of the Texas Hurricane Center for Innovative Technology. Recently he received two patents on ‘Smart Cement’ and ‘Detection and Quantification of Corrosion on Materials’. He has received several national, state and local awards for his research and teaching.
Summary
Smart cement is a chemo-thermo-piezoresistive material that functions as a highly sensing 3-dimensional bulk sensor. It can be used for monitoring changes oflectrical resistivity in concrete by the addition of 0.03% of selected conductive or semi-conductive fibers are added to the bulk cement.
