Resistance to Underwater Abrasion of Fiber Reinforced Cement Mortar

Abstract:

Surfaces of hydraulic concrete conduits where significant abrasion of waterborne sediment can occur often degrade and need a regular repair to maintain their serviceability. In this research, thin overlay made of fiber reinforced cement mortar was introduced as a repair measures. Its resistance to underwater abrasion was therefore experimentally evaluated following the procedures of ASTM C 1138. This research utilized three types of fiber: steel fiber, polypropylene fiber, and micro polypropylene fiber (the micro polypropylene fiber was used only in a combination with either the steel or the polypropylene fiber). The influence of these fibers on the abrasion resistance of fiber reinforced cement mortar was then determined in terms of weight loss. The weight loss results showed that the fibers added to mortar specimens can enhance the abrasion resistance. Between the steel and polypropylene fiber, the latter provided better abrasion resistance. In case of the combination mixes, the micro polypropylene fiber increased abrasion resistance when combined with the polypropylene fiber but had no benefit when combined with the steel fiber.

• Periodical: Key Engineering Materials (Volume 728)
• Pages: 379-383
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.728.379
• Online since: January 2017
• Authors: Warun Wongprachum, Manote Sappakittipakorn*, Pijit Jiemvarangkul
• Keywords: Fiber Reinforced Cement Mortar, Polypropylene Fiber, Steel Fiber, Underwater Abrasion

References

[1] S. Homvutivong, Abrasion resistance of pozzolan concrete, KKU Eng. J. 39 (2012) 23-34.

[2] E. Horszczaruk, Mathematical model of abrasive wear of high performance concrete, Wear 264 (2008) 113-118.

DOI: 10.1016/j.wear.2006.12.008

[3] W.M. Andreas, Short-time cavitation erosion of concrete, Wear 241 (2000) 47-52.

[4] E. Yen, Influence of class F fly ash on the abrasion–erosion resistance of high-strength concrete, Constr. Build. Mater. 21 (2007) 458-463.

DOI: 10.1016/j.conbuildmat.2005.06.051

[5] E. Horszczaruk, The model of abrasive wear of concrete in hydraulic structures, Wear 256 (2004) 787-796.

DOI: 10.1016/s0043-1648(03)00525-8

[6] E. Horszczaruk, Abrasion resistance of high-strength concrete in hydraulic structures, Wear 259 (2005) 62-69.

DOI: 10.1016/j.wear.2005.02.079

[7] ASTM C1138, Standard test method for concrete abrasion resistance (underwater method).

[8] J. Carlos, A. Galvão, F.K. Portella, A.C.M. Kormann, Abrasive effects observed in concrete hydraulic surfaces of dams and application of repair materials, abrasion resistance of materials, in: Dr. Marcin Adamiak (Ed. ), Brazil, 2012, pp.19-34.

DOI: 10.5772/27964