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Effect of polypropylene and basalt fiber on properties of repair mortar

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Document pages: 11 pages

Abstract: The freshness, mechanical properties and durability of polypropylene fiber reinforced mortar (pp-frm) and basalt fiber reinforced mortar (bfrm) with different fiber content were tested. The test results show that the existence of polypropylene (PP) fiber and basalt fiber (BF) in mortar reduces the initial slump flow and increases the slump flow loss rate. The bond strength and flexural strength of fiber reinforced mortar (FRM) are improved, but the compressive strength is not significantly improved. Compared with the control mortar, the bond strength of 0.6 polypropylene fiber reinforced composite mortar and fiber reinforced composite mortar increased by   kg m3, 1.6   kg m3 and 2.6   kg m3 fiber increased by 16.60 - 28.80 and 10.60 - 21.40 respectively. In addition, frm has low drying shrinkage, excellent wear resistance and wear resistanceistance, water impermeability, and freeze-thaw resistance compared with the control mortar. The abrasion resistance strength of PP FRM and BFRM is 77.30 and 38.65 more than the control mortar with 2.6 kg m3 fiber content. Therefore, PP FRM and BFRM are suitable to be utilized as repair materials, especially in repairing hydraulic structures surfaces with excellent bond strength and abrasion resistance.

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