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http://dx.doi.org/10.4334/JKCI.2013.25.4.457

Influence of Mixtures and Curing Conditions on Strength and Microstructure of Reactive Powder Concrete Using Ternary Pozzolanic Materials  

Janchivdorj, Khulgadai (Dept. of Architectural Engineering, Chonbuk National University)
Choi, Seung-Hoon (Dept. of Environmental Chemical Engineering, Seonam University)
So, Hyoung-Seok (Dept. of Architectural Engineering, Seonam University)
Seo, Ki-Seog (Nuclear Fuel Cycle Waste Treatment Division, KAERI)
So, Seung-Young (Dept. of Architectural Engineering, Chonbuk National University)
Publication Information
Journal of the Korea Concrete Institute / v.25, no.4, 2013 , pp. 457-465 More about this Journal
Abstract
This study discussed the influence of mixtures and curing conditions on the development of strength and microstructure of RPC using ternary pozzolanic materials. Through pilot experiment, various RPC was manufactured by adding single or mixed ternary pozzolanic materials such as silica fume, blast furnace slag and fly ash by mass of cement, up to 0~65%, and cured by using 4 types of method which are water and air-dried curing at $20^{\circ}C$, steam and hot-water curing at $90^{\circ}C$. The results show that the use of ternary pozzolanic materials and a suitable curing method are an effective method for improving development of strength and microstructure of RPC. The unit volume of cement was greatly reduced in RPC with ternary pozzolanic materials and unlike hydration reaction in cement, the pozzolanic reaction noticeably contributes to a reduction in hydration heat and dry shrinkage. A considerable improvement was found in the flexural strength of RPC using ternary pozzolanic materials, and then the utilization of a structural member subjected to bending was expected. The X-ray diffractometer (XRD) analysis and Scanning Electronic Microscope (SEM) revealed that the microstructure of RPC was denser by using the ternary pozzolanic materials than the original RPC containing silica fume only.
Keywords
reactive powder concrete; ternary pozzolanic material; strength; microstructure; curing condition;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Richard, P. and Cheyrezy, M. H., "Reactive Powder Concretes with High Ductility and 200-800MPa Compressive Strength," ACI Spring Convention, San Francisco, SP. 144-24, 1994, pp. 507-517.
2 Richard, P. and Cheyrezy, M. H., "Composition of Reactive Powder Concretes," Cement and Concrete Research, Vol. 25, No.7, 1995, pp. 1501-1511.   DOI   ScienceOn
3 Cheyrezy, M., "Structural Applications of RPC," Concrete, Vol. 33, No. 1, 1999, pp. 20-23.
4 Collepardi, S., Coppola, L., Troli, R., and Collepardi, M., "Mechanical Properties of Modified Reactive Powder Concrete," In: V. M. Malhotra Ed. Proceedings Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, Rome, Italy, Farmington Hills, MI: ACI Publication SP-173, 1997, pp. 1-21.
5 Abouzar, S., "Development of a Light Weight Reactive Powder Concrete," Journal of Advanced Concrete Technology, Vol. 2, No. 3, 2004, pp. 409-417.   DOI
6 Halit, Y., Mert, Y. Y., Serdar, A., and Anil, S. K., "Mechanical Properties of Reactive Powder Concrete Containing High Volumes of Ground Granulated Blast Furnace Slag," Construction and Building Materials, Vol. 23, No. 3, 2009, pp. 1223-1231.   DOI   ScienceOn
7 Langan, B. W., Weng, K., and Ward, M. A., "Effect of Silica Fume and Fly Ash on Heat of Hydration of Portland Cement," Cement and Concrete Research, Vol. 32, No. 7, 2002, pp. 1045-1051.   DOI   ScienceOn
8 So, S. Y., Lee, J. B., Kanchivdorj, K., and So, H. S., "Strength Development and Microstructure of Reactive Powder Concrete Containing Meta-kaolin," Journal of the Architectural Institute of Korea, Vol. 27, No. 12, 2011, pp. 147-154.   과학기술학회마을
9 So, S. Y. and So, H. S., "An Experimental Study on the Strength Development of Ultra-High Strength Steel Fiber Reinforced Cementitious Composites," Journal of the Architectural Institute of Korea, Vol. 25, No. 7, 2009, pp. 63-70.   과학기술학회마을
10 Jo, B. W., Yoon, K. W., Park, J. H., and Kim, H., "An Experimental Study on Mechanical Properties of Ultra-High Strength Powder Concrete," Journal of the Korea Concrete Institute, Vol. 22, No. 3, 2010, pp. 287-295. (doi: http://dx.doi.org/10.4334/JKCI.2010.22.3.287)   과학기술학회마을   DOI   ScienceOn