Fig. 1. Loading for crack inducing and measuring
Fig. 2. Measurement of current during accelerated chloride diffusion test
Fig. 3. Compressive strength in FA based concrete for 2 years
Fig. 4. Diffusion coefficient of normal strength with curing period
Fig. 5. Diffusion coefficient of high strength with curing period
Fig. 6. Gradient to sound concrete for crack effect
Fig. 7. Procedure of regression analysis for crack and curing effect
Fig. 8. Regression analysis results for crack and curing effect for normal strength concrete
Fig. 9. Regression analysis results for crack and curing effect for high strength concrete
Fig. 10. Changing patterns of parameter(A and E)
Fig. 11. Diffusion contour considering age and crack width
Table 1. Mix proportions for FA based concrete
Table 2. Physical and chemical properties of binder
Table 3. Physical properties of aggregates
Table 4. Linear analysis of diffusion coefficient considering crack and curing effect
Table 5. Analysis results for regression analysis of exponential function
References
- Andrade, C. (1993). Calculation of chloride diffusion coefficients in concrete from ionic migration measurement, Cement and Concrete Research, 23(3), 724-742. https://doi.org/10.1016/0008-8846(93)90023-3
- Broomfield, J.P. (1997). Corrosion of Steel in Concrete: Understanding, Investigation and Repair, E&FN, London, England, 1-15.
- Cheon, J.H., Ryu, H.S., Yoon, Y.S., Kwon, S.J. (2017). Crack and time effect on chloride diffusion coefficient in nuclear power plant concrete with 1 year curing period, Journal of the Korea Institute for Structural Maintenance and Inspection, 21(6), 83-90 [in Korean]. https://doi.org/10.11112/JKSMI.2017.21.6.083
- Chung, L., Jay Kim, J.H., Yi, S.T. (2008). Bond strength prediction for reinforced concrete members with highly corroded reinforcing bars, Cement and Concrete Composites, 30(7), 603-611. https://doi.org/10.1016/j.cemconcomp.2008.03.006
- Gerard, B., Marchand, J. (2000). Influence of cracking on the diffusion properties of cement-based materials Part I: Influence of continuous cracks on the steady-state regime, Cement and Concrete Research, 30(1), 37-43. https://doi.org/10.1016/S0008-8846(99)00201-X
- JSCE. (2002). Concrete Library 109: Proposal of the Format for Durability Database of Concrete, Japan Society of Civil Engineering (JSCE), Tokyo, Japan.
- JSCE. (2007). Standard Specification for Concrete Structures- Design; JSCE Guidelines for Concrete 15, Japan Society of Civil Engineering (JSCE), Tokyo, Japan.
- Jung, S.H., Ryu, H.S., Karthick, S., Kwon, S.J. (2017). Time and crack effect on chloride diffusion for concrete with fly ash, International Journal of Concrete Structures and Materials, 2018, 1-10.
- Kim, D.S., Lee, S.T., Lee, S.H., Kim, D.G., Seo, C.W., Ryu, D.H. (2009). "Strength and diffusivity of ternary cement concrete using pulverized fly ash," Academic conference of Korea Concrete Institute, KCI, Seoul, Korea, 255-256 [in Korean].
- Kwon, S.O., Bae, S.H., Lee, H.J., Jung, S.H. (2014). Characteristics for reinforcement corrosion and chloride ion diffusion of high volume fly ash concrete, Journal of the Korean Recycled Construction Resources Institute, 2(1), 34-39 [in Korean]. https://doi.org/10.14190/JRCR.2014.2.1.034
- Lee, M.H. (2016). Fundamental Properties of mortar and concrete using high calcium fly ash, Journal of the Korean Recycled Construction Resources Institute, 4(3), 284-291 [in Korean]. https://doi.org/10.14190/JRCR.2016.4.3.284
- Maekawa, K., Ishida, T., Kishi, T. (2009). Multi-Scale Modeling of Structural Concrete, Taylor & Francis, London, England.
- Nath, P., Sarker, P. (2011). Effect of fly ash on the durability properties of high strength concrete, Procedia Engineering, 14, 1149-1156. https://doi.org/10.1016/j.proeng.2011.07.144
- Neville, A.M. (1995). Properties of Concrete fourth edition, Longman Group, London, England.
- Park, S.S., Kwon, S.J., Jung, S.H. (2012a). Analysis technique for chloride penetration in cracked concrete using equivalent diffusion and permeation, Construction and Building Materials, 29, 183-192. https://doi.org/10.1016/j.conbuildmat.2011.09.019
- Park, S.S., Kwon, S.J., Jung, S.H., Lee, S.W. (2012b). Modeling of water permeability in early aged concrete with cracks based on micro pore structure, Construction and Building Materials, 27(1), 597-604. https://doi.org/10.1016/j.conbuildmat.2011.07.002
- Park, S.S., Song, H.W., Byun, K.J. (2001). Model for chloride diffusivity and water permeability in cracked concrete, Journal of the Korean Society of Civil Engineers, 21(6A), 915-924 [in Korean].
- Song, H.W., Cho, H.J., Park, S.S., Byun, K.J., Maekawa, K. (2001). Early-age cracking resistance evaluation of concrete structure, Concrete Science Engineering, 3(10), 62-72.
- Win, P.P., Watanabe, M., Machida, A. (2004). Penetration profile of chloride ion in cracked reinforced concrete, Cement and Concrete Research, 34(7), 1073-1079. https://doi.org/10.1016/j.cemconres.2003.11.020
- Zhou, Z., He, J.P., Chen, G.D., Ou, J.P. (2009). A smart steel strand for the evaluation of prestress loss distribution in post tensioned concrete structures, Journal of Intelligent Material Systems and Structures, 20(16), 1901-1912. https://doi.org/10.1177/1045389X09347021