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Effects of Different Water and Super Plasticizer Amount, Pre-Setting and Curing Regimes on the Behavior of Reactive Powder Concrete | ||
| Civil Engineering Infrastructures Journal | ||
| مقاله 10، دوره 47، شماره 2، اسفند 2014، صفحه 291-304 اصل مقاله (573.63 K) | ||
| نوع مقاله: Research Papers | ||
| شناسه دیجیتال (DOI): 10.7508/ceij.2014.02.010 | ||
| نویسندگان | ||
| M. A. Dashti Rahmatabadi* 1؛ H. Haji Kazemi2؛ F. Shahabian3 | ||
| 1Ph.D. Student, Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 2Professor, Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 3Associate Professor, Department of Civil Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| چکیده | ||
| Reactive Powder Concrete (RPC) is an ultra high performance concrete which has superior mechanical and physical properties. The RPC is composed of cement and very fine powders such as crushed quartz (100–600 μm) and silica fume with very low water/binder ratio (W/B) (less than 0.20) and Super Plasticizer (SP). The RPC has a very high compressive and tensile strength with better durability properties than current high performance concretes. Application of very low water/binder ratio with a high dosage of super plasticizer, different heat curing processes and pre-setting pressure improve mechanical and physical properties of RPC. In this study, the RPC is composed of available materials in Iran. Two different mixing proportions, different water/binder ratios for preparation of samples, different super plasticizer dosages, five different (0, 25, 50, 100 and 150 MPa) pre-setting pressure and 7 different curing regimes were used in samples preparation and experiments. Results showed that appropriate water/binder ratio and super plasticizer dosage, higher temperature and pre-setting pressure increase the workability, density and compressive strength of compositions. | ||
| کلیدواژهها | ||
| compressive strength؛ Heat Curing؛ Pre-Setting Pressure؛ Reactive Powder Concrete؛ Workability | ||
| مراجع | ||
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Bonneau, O., Lachemi, M., Dallaire, E., Dugat, J. and Aitcin, P.C. (1997). “Mechanical properties and durability of two industrial reactive powder concretes”, ACI Materials Journal, 94(4), 286-290.
Cheyrezy, M.H. and Richard, P. (1995). “Composition of reactive powder concretes”, Cement and Concrete Research, 25(7), 1501–1511.
Dugat, J., Roux, N. and Bernier, G. (1996). “Mechanical properties of reactive powder concretes”, Materials and Structures, 29, 233–240.
Furnas, C. (1931). “Mathematical relations for beds of broken solids of maximum density”, Industrial & Engineering Chemistry, ACE, 23(9), 1052–1058.
Glasser, F.P. and Hong, S.Y. (2003). “Thermal treatment of C–S–H gel at 1 bar H2O pressure up to 200 °C”, Cement and Concrete Research, 33(2), 271–279.
Kejin, W. and Zhi, G. (2003). “Evaluating properties of blended cements for concrete pavements”, Final Report, Center for Portland Cement Concrete Pavement Technology, Iowa State University.
Larrard, F. and Sedran, T. (1994). “Optimization of ultra high performance concrete by the use of a packing model”, Cement and Concrete Research, 24(6), 997–1009.
Lee, N.P. and Chisholm, D.H. (2005). “Study report reactive powder concrete”, BRANZ, 146, 1-29.
Liu, C.T. and Huang, J.S. (2008). “Highly flowable reactive powder mortar as a repair material”, Construction and Building Materials, 22(6), 1043-1050.
Massidda, L., Sanna, U., Cocco, E. and Meloni, P. (2001). “High pressure steam curing of reactive powder mortars”, American Concrete Institiute, 200(27), 447–464.
Mooney, M. (1951) “The viscosity of concentrated suspension of spherical particles”. Journal of Colloid, 6(2), 162–170.
Nassif, H., Najm, H. and Suksawang, N. (2005). “Effect of pozzolanic materials and curing methods on the elastic modulus of HPC”, Cement and Concrete Composite, 27(6), 661–670.
Richard, P. and Cheyrezy, M.H. (1994). “Reactive Powder Concretes with High Ductility and 200-800 MPa Compressive Strength”, SCI SP 144, 507-518.
Rougeau, P. and Borys, B. (2004). “Ultra high performance concrete with ultra fine particles other than silica fume. Ultra high performance concrete (UHPC)”, International Symposium on Ultra High Performance Concrete, 13–15 September, Kassel, Germany, 213–225.
Shaheen, E. and Shrive, N.G. (2006). “Optimization of mechanical properties and durability of reactive powder concrete”, ACI Materials Journal, 103(6), 444-451.
Sadrekarimi, A. (2004). “Development of a light weight reactive powder concrete”, Journal of Advanced Concrete Technology, 2(3), 409-417.
Talebinejad, I., Bassam, S.A., Iranmanesh, A. and Shekarchizadeh, M. (2004). “Optimizing mix proportions of normal weight reactive powder concrete with strengths of 200–350 MPa Ultra High Performance Concrete (UHPC)” International Symposium on Ultra High Performance Concrete, 13–15 September, 133–141.
Teichman, T. and Schmidt, M. (2004). “Influence of the packing density of fine particles on structure, strength and durability of UHPC”, International Symposium on Ultra High Performance Concrete, 13–1 5 September, 312–323.
Topçu, I.B. and Karakurt, C. (2005). “Reaktif pudra beton lari”. Turk Engineering News Journal, 437, 25–30.
Yazici, H. (2007). “The effect of curing conditions on compressive strength of ultra high strength concrete with high volume mineral admixtures”, Building and Environment, 42(5), 2083-2089.
Zanni, H., Cheyrezy, M., Maret, V., Philippot, S. and Nieto, P. (1996). “Investigation of hydration and pozzolanic reaction in Reactive Powder Concrete (RPC) using 29Si NMR”, Cement and Concrete Research, 26(1), 93-100.
Zhanga, Y., Sun, W. and Liu, S. (2002). “Study on the hydration heat of binder paste in high-performance concrete”, Cement and Concrete Research, 32(9), 1483 –1488. | ||
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