Fresh and hardened-state properties of hybrid fiber–reinforced high-strength self-compacting cementitious composites

2022 ◽  
Vol 318 ◽  
pp. 125874
Author(s):  
Ahmad Reza Sattarifard ◽  
Masoud Ahmadi ◽  
Ahmad Dalvand ◽  
Ali Reza Sattarifard
Keyword(s):  
High Strength ◽  
Cementitious Composites ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Hardened State

scholarly journals Self-consolidating mortar incorporating higher volume blended pozzolans for concrete repair

2019 ◽  
Vol 276 ◽  
pp. 01016
Author(s):  
M. Jamil ◽  
A. B. M. A. Kaish ◽  
E. I. Sahari ◽  
N. L. Fong ◽  
L. Nahar
Keyword(s):  
High Strength ◽  
Experimental Results ◽  
Cementitious Composites ◽  
Fiber Reinforced ◽  
Structural Concrete ◽  
Concrete Repair ◽  
Cement Based Materials

The challenge of repairing cracked or damaged concrete has been increasing worldwide. Several cement-based materials, such as ferrocement, fiber-reinforced cementitious mortar (FRCM), and textilereinforced mortar (TRM), have been developed and used to address the aforementioned challenge. Self-consolidating mortar is required to accelerate structural concrete repair using cementitious composites (e.g., ferrocement, FRCM, and TRM). In this study, a high-strength selfconsolidating mortar is developed using higher-volume (50% by weight of cement) blended pozzolans. Experimental results exhibit potential in terms of flowability and strength. Therefore, this type of cementitious selfconsolidating mortar can be used to expedite concrete repair or strengthening using cementitious composites.

Study on the Mechanical Properties of High Performance Hybrid Fiber Reinforced Cementitious Composite (HFRCC) under Impact Loading

2014 ◽  
Vol 629-630 ◽  
pp. 79-84 ◽  
Author(s):  
Hui Xian Yang ◽  
Jing Li ◽  
Yan Sheng Huang
Keyword(s):  
Impact Loading ◽  
Material Properties ◽  
High Performance ◽  
Steel Fibers ◽  
Cementitious Composites ◽  
Peak Strain ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Dynamic Material Properties ◽  
Fiber Reinforced Cementitious Composites

The dynamic material properties of high performance hybrid fiber reinforced cementitious composites (HFRCC) with various volumetric fractions of steel and polyvinyl alcohol (PVA) fibers were studied by the Split Hopkinson Press Bar (SHPB) test. The results show that HFRCC with higher volumetric fraction of steel fibers are more sensitive to stain rate and the dynamic compressive strength increase more prominently with the strain rate increasing, but peak strain shows the opposite trend. The PVA fibers increase the ductility of HFRCC more effectively than steel fibers. Compared to PVA fiber reinforced cementitious composites (FRCC), HFRCC present better dynamic material properties under impact loading.

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