Rheological and mechanical properties of hybrid fiber reinforced cement mortar

2018 ◽  
Vol 171 ◽  
pp. 736-742 ◽  
Author(s):  
Mingli Cao ◽  
Ling Xu ◽  
Cong Zhang
2010 ◽  
Vol 168-170 ◽  
pp. 456-459
Author(s):  
Hai Yan Yuan ◽  
Shui Zhang ◽  
Guo Zhong Li

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.


2014 ◽  
Vol 935 ◽  
pp. 142-145 ◽  
Author(s):  
Seung Jo Lee

Eight hybrid fiber reinforced cement mortar (HFRC) mixes reinforced with Garnet-Nylon, Polypropylene (PP), Steel Fiber (SF) was tested in order to examine the effect of the W/B and replacement ratio of the Garnet-Nylon, PP, SF on the properties of matter and different material properties of HFRC. Main variables investigated were W/B and replacement ratio of the Garnet and Nylon, PP, SF. The measured material properties of fiber reinforced NS (Nylon-SF) specimens were analyzed using the two types of strength and compared with those recorded with PS (PP-SF) specimens. The flow of HFRC increased with the increase of the W/B. In addition, compressive strength, bending of HFRC was higher than those of replacement ratio of the Garnet-fibers, though the total HFRC was lower than that with NS-GA-01 specimen. For enhancing the toughness and strength of HFRC, using the GA of 5 % and Nylon of 0.1 %, PP of 0.1%, SF of 0.4% replacement ratio was more effective than using the GA of 20 % and Nylon of 0.4 %, PP of 0.4%, SF of 0.8% replacement ratio.


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