MECHANICAL PROPERTIES OF POLYPROPYLENE FIBERS MIXED CEMENT-SAND MORTAR
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Volume 17 article 585 pages: 116 - 125
The polypropylene fibers are mostly used in concrete nevertheless much focus is not made on its use in mortar.
Therefore, this research was carried out to determine the beneficial use of polypropylene fibers in cement-sand mortar.
By determining the mechanical properties of polypropylene fibers Mixed (PPFM) Cement-Sand Mortar we can
assess it beneficial use. The PPFM Cement-Sand Mortar (Type-N) contains Polypropylene Fibers randomly mixed
in cement-sand mortar. This idea is based on the previous research carried out on Polypropylene Fibers Reinforced
Concrete. The fibers used were microfilament fibers having length of 12 mm, diameter of 18 micron and specific
gravity of 0.91. The fibers were mixed in mortar in different proportions (1%, 2% and 3% by the volume fraction) in cement-
sand mortar of 1:6 (by volume fraction) and its mechanical properties were studied with control samples (Mortar
with no fibers). A total of 08 tests were performed: 4 tests were performed in fresh state of mortar, 4 were performed
in hardened state of mortar. In fresh state, 12 samples for each test were casted and the mortar showed considerable
decrease in workability, bulk density and setting time whereas the air content increased considerably with increasing
PPF fraction. In hardened state, 48 samples were casted for each test and the mortar samples showed considerable
decrease in compressive strength, tensile strength and fl exural strength with increasing PPF fraction, however, the
ductility increased considerably. Based on the results, it was concluded that the use of polypropylene fibers does
increase the ductility of the mortar, however, the strength does decrease, and therefore, its use may be limited to less
that 1% so that ductility is achieved, and strength of mortar is not affected much. In view of above, this work can be
extended for calculating its optimum use in cement sand mortar.
- C. D. Johnston, Fiber-reinforced cements and concretes: Crc Press, 2014.
- O. Karahan and C. D. Atiş, "The durability properties of polypropylene fi ber reinforced fl y ash concrete," Materials & Design, vol. 32, pp. 1044-1049, 2011.
- S. Ahmed, et al., "A study on properties of polypropylene fiber reinforced concrete," in 31st Conference on Our
World in Concrete and Structures, pp. 63-72, 2006.
- G. S. Islam and S. D. Gupta, "Evaluating plastic shrinkage and permeability of polypropylene fiber reinforced concrete," International Journal of Sustainable Built Environment, vol. 5, pp. 345-354, 2016.
- Alhozaimy, A. M., Soroushian, P., & Mirza, F. Mechanical properties of polypropylene fi ber reinforced concrete and the effects of pozzolanic materials. Cement and Concrete Composites, 18(2), 85-92, 1996.
- Fanella, D. A., & Naaman, A. E. Stress-strain properties of fiber reinforced mortar in compression. Journal of The American Concrete Institute, 82(4), 475-483, 1985.
- Li Bei-Xing; Cheng Ming-Xian; Cheng Fang and Liu Lu-Ping; The mechanical properties of polypropylene reinforced concrete; Wuhan University of Technology, China, 2004.
- KolliRamuji& VNR Vignana Jyoti; Strength properties of polypropylene fibers reinforced concrete; Institute of Engineering and Technology, Hyderabad, India, 2013.
- Aulia, T. B. Effects of polypropylene fibers on the properties of high-strength concretes. Institutes for Massivbau and Baustoffechnologi, University Leipzig, Lacer, 2002.
- Deng, Z., and Li, J., Tension and Impact Behaviours of New Type Fiber Reinforced Concrete,Computers and Concrete, Concrete. Vol. 4, No.1, pp.19-32, 2007.
- Ramlal, C. A., &Selokar. G. R. Synthesis And Characterization Of Polypropylene Fiber Reinforced Concrete, 1994.
- Shehnila Fatima; Mechanical Properties of Polypropylene Fiber Reinforced Concrete and Structural Applications; NED University of Engineering and Technology, Karachi, 2013.
- Erdogmus, E. Use of fi ber-reinforced cements in masonry construction and structural rehabilitation. Fibers, 3(1), 41-63, 2015.
- [ASTM Standard C-150, "Type I or II, except Type III may be used for cold-weather construction," in Provide natural color or white cement as required to produce mortar color indicated vol. 1, ed. West Conshohocken, PA, USA, 1993.
- ASTM Standard C 33, "Aggregates, B Normal-Weight-Class 3S coarse aggregate or better, graded," in Provide aggregates from a single source vol. 1, ed, pp. 1-1, 2003.
- ASTM Standard C1437-15, "Standard test method for flow of hydraulic cement mortar," in C 1437, ed. West Conshohocken, PA, USA, 2007.
- ASTM Standard C-231/231M-14, "Standard test method for air content of freshly mixed concrete by the pressure method," ed. West Conshohocken, PA, USA, 2010.
- ASTM Standard C807-13, "Standard test methods for time of setting of hydraulic cement by Vicat needle," ed. West Conshohocken, PA, USA., 2008.
- ASTM Standard C109/C109M-16a, "Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (using 2-in. Or [50-mm] Cube Specimens)," in Committee C-1 on Cement, ed. West Conshohocken, PA, USA: ASTM International, 2013.
- ASTM Standard C307-03, "Standard Test Method for Tensile Strength of Chemical-Resistant Mortar, Grouts and Monolithic Surfacing;," in Committee C-1 on Cement, ed. West Conshohocken, PA, USA: ASTM International, 2012.
- ASTM Standard C1609/C1609M–07, "Standard test method for flexural performance of fiber-reinforced concrete (using beam with third-point loading). West Conshohocken (PA): ASTM International," ed: ASTM 2010.
- German Standard DIN 12390, "Standard Test Method for Permeability Coeffi cient of Hydraulic Cement Mortar; " ed. Germany, 2009.