scholarly journals Compressive Creep Behavior of Cellulose Fiber Reinforced Concrete

2021 ◽  
Vol 825 (1) ◽  
pp. 012022
Author(s):  
CHEN Bo ◽  
GUO Liping ◽  
ZHANG Wenxiao ◽  
BAI Yin ◽  
WANG Xiongfeng
Keyword(s):  
Reinforced Concrete ◽  
Creep Behavior ◽  
Cellulose Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Compressive Creep

Development of fiber reinforced concrete repair materials

2006 ◽  
Vol 33 (2) ◽  
pp. 126-133 ◽  
Author(s):  
N Banthia ◽  
R Gupta ◽  
S Mindess
Keyword(s):  
British Columbia ◽  
Reinforced Concrete ◽  
Cellulose Fiber ◽  
Fiber Reinforced Concrete ◽  
Test Method ◽  
Fiber Reinforced ◽  
Parking Garage ◽  
Shrinkage Cracking ◽  
University Of British Columbia ◽  
Repair Materials

Early age shrinkage cracking remains a critical concern for cement-based repairs and overlays. Fibers mitigate such cracking, but no standardized technique of assessing the performance of a given fiber exists. Recently, a novel technique of making such an assessment was developed at The University of British Columbia (UBC). In this test method, currently being balloted through the ASTM, an overlay of fiber reinforced concrete (FRC) material to be tested is cast directly on a fully matured sub-base with protuberances, and the entire assembly is subjected to controlled drying. Cracking in the overlay is then monitored and characterized. The technique was recently employed to develop "crack-free" overlay materials for two repair sites. One was a parking garage in Downtown Vancouver, British Columbia, and the other was the plaza deck at The UBC Aquatic Center. For the parking garage, a carbon fiber reinforced concrete and for the plaza deck, a cellulose fiber reinforced concrete were developed. Both overlays were instrumented with strain sensors and data were monitored over the Internet.Key words: fiber reinforced concrete, shrinkage cracking, strain monitoring, carbon fibers, cellulose fibers.

Moisture Effects on Cellulose Fiber Reinforced Concrete Properties

2013 ◽  
Vol 330 ◽  
pp. 77-81
Author(s):  
Yu Chen ◽  
David Bloomquist ◽  
Raphael Crowley
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Yield Strength ◽  
Cellulose Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Concrete Properties ◽  
Moisture Effects ◽  
Strength Tests ◽  
Effect Of Moisture

ASTM C78, the Flexural Strength tests were conducted on Cellulose Fiber Reinforced Concrete (CFRC) samples subjected to difference moisture-levels to quantify the effect of moisture on them. Results indicated that modulus elasticity did not change along the increase in moisture. However, flexural strength and yield strength appeared to be affected under certain conditions.

Cellulose Fiber Reinforced Concrete Fracture Mechanisms and Damage Detection Using Acoustic Emission

2012 ◽  
Vol 239-240 ◽  
pp. 3-9 ◽  
Author(s):  
Yu Chen ◽  
David Bloomquist ◽  
Raphael Crowley
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Ultimate Load ◽  
Cellulose Fiber ◽  
Fiber Reinforced Concrete ◽  
Fracture Mechanisms ◽  
Concrete Fracture ◽  
Fiber Breakage ◽  
Fiber Reinforced ◽  
Ae Signals

ASTM C78 standard tests for flexural strength of concrete were conducted on cellulose fiber reinforced concrete (CFRC) specimens using varying percentages of ultimate load. During testing, Acoustic Emission (AE) signals were recorded while after testing, a scanning electron microscope (SEM) was used to visually observe surface features. SEM results appear to illustrate three important stages of the fracture process: cement cracking, fiber-cement debonding, and fiber breakage/pullout. AE results were used to bound ranges for a relationship between AE amplitude and CFRC fracture mechanisms.

Sign in / Sign up

Export Citation Format

Share Document