Damage Characteristics of High-Performance Fiber-Reinforced Cement Composites Panels Subjected to Projectile Impact

2021 ◽  
pp. 106919
Author(s):  
MinJoo Lee ◽  
Gang-Kyu Park ◽  
Sung-Wook Kim ◽  
Hyo-Gyoung Kwak
Keyword(s):  
High Performance ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Projectile Impact ◽  
Damage Characteristics ◽  
High Performance Fiber ◽  
Reinforced Cement

Effectiveness of high performance fiber-reinforced cement composites in slender coupling beams

2014 ◽  
Vol 68 ◽  
pp. 476-490 ◽  
Author(s):  
Myoungsu Shin ◽  
Seong-Woo Gwon ◽  
Kihak Lee ◽  
Sang Whan Han ◽  
Yeong Wook Jo
Keyword(s):  
High Performance ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Coupling Beams ◽  
High Performance Fiber ◽  
Reinforced Cement

Using Acoustic Emission to Quantify Damage in High-Performance Fiber-Reinforced Cement Composites under Cyclically Compressive Loading

2010 ◽  
Vol 163-167 ◽  
pp. 2549-2552
Author(s):  
Sang Hyun Nam ◽  
Young Jae Song ◽  
Sun Woo Kim ◽  
Hyun Do Yun
Keyword(s):  
Acoustic Emission ◽  
High Performance ◽  
Compressive Load ◽  
Cement Matrix ◽  
Multiple Cracks ◽  
Cement Composites ◽  
Fiber Reinforced ◽  
Kaiser Effect ◽  
High Performance Fiber ◽  
Reinforced Cement

High performance fiber-reinforced cement composites (HPFRCCs) show multiple cracks and a limited damage tolerance capability due to the debonding of the fibers of the cement matrix. For practical applications, it is necessary to investigate the fractural behavior of HPFRCCs to understand the mechanism of the microbehavior of a cement matrix containing reinforcing fibers. We have investigated the acoustic emission (AE) signals in HPFRCCs under monotonic and cyclic uniaxial compressive loads. Four types of specimen were tested. The experimental parameters studied were: the type of fiber (polyethylene or polyvinyl alcohol), the hybrid type (with steel cord), and the loading pattern. The data shows that the progress of the damage in HPFRCCs in the compressive mode is characteristic of the type of hybrid fiber and its volume fraction. From the AE data, the second and third compressive load cycles resulted in a successive decrease in the amplitude compared to the first compressive load cycle. In addition, an AE Kaiser effect was observed in HPFRCCs specimens up to 80% of their ultimate strength. These observations suggest that the AE Kaiser effect has potential for use as a new tool to monitor the loading history of HPFRCCs.

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