Abstract
Engineered Cementitious Composites have unique tensile ductility and autogenous crack width control, characteristics attractive to a variety of construction applications. For different construction approaches, such as on-site casting, off-site precasting, shotcreting, or structural member extrusion, the fresh property requirements can be distinctively different. For example, while self-consolidation behavior is desirable for casting, this behavior does not satisfy the requirements for shotcreting. Hence, it is necessary that the fresh properties of ECC be designed to suit the specific application methodology. Control of fresh properties, however, must not interfere with the hardened properties of ECC. In particular, the high tensile ductility must be properly maintained.
One of the essential challenges of processing ECC material is the uniform dispersion of fibers in the matrix. Even at a moderate fiber volume content of two percent, balling and nonuniform dispersion of fibers can result in poor hardened properties and high variability of tensile strain capacity, if the material composition and mixing procedure are not properly designed and controlled.
This chapter describes the accumulated knowledge of fresh property control of ECC that leads to enhanced uniformity of fiber dispersion. As well, techniques for achieving processing requirements for self-consolidating casting, shotcreting, and extrusion are presented. The presented information should be helpful for successful processing of ECC in the laboratory as well as the production of ECC in the field.
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References
Kong, H.-J., Bike, S., Li, V.C.: Development of a self-compacting engineered cementitious composite employing electrosteric dispersion/stabilization. J. Cem. Concr. Compos. 25(3), 301–309 (2003)
Kong, H.-J., Bike, S., Li, V.C.: Constitutive rheological control to develop a self-consolidating engineered cementitious composite reinforced with hydrophilic poly(vinyl alcohol) fibers. J. Cem. Concr. Compos. 25(3), 333–341 (2003)
Kong, H.J., Bike, S.G., Li, V.C.: Effects of strong polyelectrolyte on rheological properties of concentrated cementitious suspensions. J. Cem. Concr. Res. 36(5), 851–857 (2006)
Kong, H.J., Bike, S.G., Li, V.C.: Electrosteric stabilization of concentrated cement suspensions impacted by a strong anionic polyelectrolyte and a non-ionic polymer. J. Cem. Concr. Res. 36(5), 842–850 (2006)
Nagamoto, N., Ozawa, K.: Mixture proportions of self-compacting high-performance concrete. In: High-Performance Concrete: Design, Materials, and Advances in Concrete Technology, vol. SP-172. ACI International (1997)
Okamura, R.H., Ozawa, K.: Mix-design for self-compacting concrete. Concr. Lib. JSCE. 25, 107–120 (1995)
Fischer, G., Wang, S., Li, V.C.: Design of Engineered Cementitious Composites (ECC) for processing and workability requirements. In: Brandt, A.M., Li, V.C., Marshall, I.H. (eds.) Proceedings, BMC-7, Warsaw, Poland, pp. 29–36 (2003)
Lepech, M.D., Li, V.C.: Large scale processing of engineered cementitious composites. ACI Mater. J. 105(4), 358–366 (2008)
Funk, J.E., Dinger, D.R.: Particle packing, part VI—applications of particle size distribution concepts. Interceram. 43(5), 350–353 (1994)
Lepech, M.D., Li, V.C.: Application of ECC for bridge deck link slabs. RILEM J. Mater. Struct. 42(9), 1185–1195 (2009)
Li, M., Li, V.C.: Rheology, fiber dispersion, and robust properties of engineered cementitious composites. RILEM J. Mater. Struct. 46(3), 405–420 (2013)
Yang, E.H., Sahmaran, M., Yang, Y., Li, V.C.: Rheological control in the production of engineered cementitious composites. ACI Mater. J. 106(4), 357–366 (2009)
Zhou, J., Qian, S., Ye, G., Copuroglu, O., van Breugel, K., Li, V.C.: Improved fiber distribution and mechanical properties of engineered cementitious composites by adjusting mixing sequence. J. Cem. Concr. Compos. 34(3), 342–348 (2012)
Kim, Y.Y., Kong, H.J., Li, V.C.: Design of Engineered Cementitious Composite (ECC) suitable for wet-mix shotcreting. ACI Mater. J. 100(6), 511–518 (2003)
Rokugo, K., Kanda, T., Yokota, H., Sakata, N.: Applications and recommendations of high performance fiber reinforced cement composites with multiple fine cracking (HPFRCC) in Japan. Mater. Struct. 42, 1197–1208 (2009)
Stang, H., Li, V.C.: Extrusion of ECC-material. In: Reinhardt, H., Naaman, A. (eds.) Proc., High Performance Fiber Reinforced Cement Composites 3 (HPFRCC 3), pp. 203–212. Chapman & Hull (1999)
Takashima, H., Miyagai, K., Hashida, T., Li, V.C.: A design approach for the mechanical properties of polypropylene discontinuous fiber reinforced cementitious composites by extrusion molding. J. Eng. Fract. Mech. 70(7–8), 853–870 (2003)
Krenchel, H., Fredslund-Hansen, H., Stang, H.: Method and apparatus for producing bodies of consolidated particulate material, and product produced thereby, 1995. International patent application, PCT/DK95/00296
Pedersen, C.: New production processes, materials and calculation techniques for fiber reinforced concrete pipes. PhD thesis, Department of Structural Engineering and Materials, Technical University of Denmark, Series R, no. 14 (1996)
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Li, V.C. (2019). Processing of Engineered Cementitious Composites (ECC). In: Engineered Cementitious Composites (ECC). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-58438-5_3
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DOI: https://doi.org/10.1007/978-3-662-58438-5_3
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