The spalling strength of ultra-fiber reinforced cement mortar

2011 ◽  
Vol 18 (7) ◽  
pp. 1808-1817 ◽  
Author(s):  
Jue Zhu ◽  
Chao Sun ◽  
Zhen Qian ◽  
Jiangying Chen
Keyword(s):  
Cement Mortar ◽  
Fiber Reinforced ◽  
Spalling Strength ◽  
Reinforced Cement

Research on Anti-Cracking Performance of Polypropylene Fiber Reinforced Cement Mortar

2011 ◽  
Vol 189-193 ◽  
pp. 983-987 ◽  
Author(s):  
Hong Shen Xu ◽  
Yong Min Cao ◽  
Hong Ming Sun
Keyword(s):  
Theoretical Analysis ◽  
Critical Stress ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Fiber Reinforced ◽  
Cracking Performance ◽  
Reinforced Cement

Adding suitable quantity of polypropylene fiber is very effective for controlling plastic crack of cement mortar. During the experience stage, adding quantity of polypropylene fiber is 1.5 kg/m3, and crack rate of mortar is only 7.7%. Theoretical analysis is made for plastic crack mechanism of cement mortar, the results indicate that adding polypropylene fiber improves critical stress of crack expansion in mortar and notably reduces crack of cement mortar.

Resistance to Underwater Abrasion of Fiber Reinforced Cement Mortar

2017 ◽  
Vol 728 ◽  
pp. 379-383 ◽  
Author(s):  
Warun Wongprachum ◽  
Manote Sappakittipakorn ◽  
Pijit Jiemvarangkul
Keyword(s):  
Weight Loss ◽  
Abrasion Resistance ◽  
Steel Fiber ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Fiber Reinforced ◽  
Hydraulic Concrete ◽  
Reinforced Cement

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.

Orthogonal Experimental Study on Properties of Hybrid Fiber Reinforced Cement Mortar

2010 ◽  
Vol 168-170 ◽  
pp. 456-459
Author(s):  
Hai Yan Yuan ◽  
Shui Zhang ◽  
Guo Zhong Li
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Steel Fiber ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Factors Affecting ◽  
Fiber Fraction ◽  
Reinforced Cement

By adopting the method of orthogonal experimental design, the effect of three independent variables, that is steel fiber fraction, polypropylene fiber fraction and silica fume fraction on the compressive strength, flexural strength and shrinkage of cement mortar was studied. The results indicate that steel fiber is one of the most important factors affecting compressive strength and shrinkage, and polypropylene fiber is one of the most important factors affecting flexural strength and shrinkage of cement mortar. By using deviation analysis to analyze the orthogonal experiment results, the optimized mix proportion of hybrid fiber reinforced cement mortar is determined. The hybrid effect of steel fiber and polypropylene fiber on the properties of cement mortar is discussed.

Effect of Polypropylene Fiber on the Properties of Cement Mortar

2014 ◽  
Vol 919-921 ◽  
pp. 1903-1907
Author(s):  
Jun Pan ◽  
Fei Li ◽  
Xue Wu Zhang
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Fiber Content ◽  
Fiber Reinforced Concrete ◽  
Fiber Types ◽  
Fiber Reinforced ◽  
Bending Tests ◽  
Reinforced Cement

This thesis discusses the influence of fly ash content, fiber content and fiber types on the performance of fiber reinforced concrete, through the flexural and compressive tests on fiber reinforced cement mortar, and the splitting tensile and bending tests on the fiber reinforced concrete. The test result shows that the adding of fly ash can better play the enhancement of polypropylene fiber; the change of the fiber content affects the flexural strength of cement mortar and obviously improves the splitting tensile strength of the reinforced concrete; and the polypropylene fiber and steel fiber have different enhancement on cement mortar due to their qualitative differences.

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