scholarly journals Study on frost resistance and abrasion resistance of fiber mesh reinforced concrete

2020 ◽  
Vol 206 ◽  
pp. 02020
Author(s):  
Cheng Hu ◽  
Xingzhong Weng ◽  
Xiangcheng Yan ◽  
Pengcheng Liu ◽  
Tianxiong Guo
Keyword(s):  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Abrasion Resistance ◽  
Frost Resistance ◽  
Unit Area ◽  
Basalt Fiber ◽  
Aramid Fiber ◽  
Enhancement Effect ◽  
Fiber Mesh ◽  
Better Than

The frost resistance and abrasion resistance of the fiber mesh reinforced concrete under the simulated treatment of external environment were studied through the frost resistance test and abrasion test. The relative dynamic modulus, the amount of spalling per unit area, the amount of abrasion per unit area and abrasion depth were used as evaluation indexes. The result shows that the frost resistance and abrasion resistance of concrete can be enhanced by fiber mesh. For the frost resistance, enhancement effect of carbon fiber mesh is better than that of basalt fiber mesh, and better than that of aramid fiber mesh. For the abrasion resistance, enhancement effect of aramid fiber mesh is better than that of basalt fiber mesh, and better than that of carbon fiber mesh. On the whole, the frost resistance and abrasion resistance of basalt fiber mesh reinforced concrete are better. Therefore, basalt fiber mesh is recommended to strengthen the frost resistance and abrasion resistance of concrete in engineering practice.

Basalt Fiber Reinforce Cement-Based Composite Materials

2011 ◽  
Vol 374-377 ◽  
pp. 1837-1842
Author(s):  
Ming Tang ◽  
Jing Qi Li ◽  
Hong Liang Liu ◽  
Ning Chen
Keyword(s):  
Composite Materials ◽  
Carbon Fiber ◽  
Flexural Strength ◽  
Basalt Fiber ◽  
Physical And Mechanical Properties ◽  
Alkali Resistance ◽  
Orthogonal Experimental Design ◽  
Enhancement Effect ◽  
Cement Ratio ◽  
Water Cement Ratio

In order to obtain the high performance cement-based consistent materials，the enhancement effect of basalt fiber was studied to develop the building mortar with a high flexural strength . Three factors such as basalt fibers fraction，water-cement ratio and sand-lime ratio are studied on compressive and flexural strength on 7 days and 28 days through the orthogonal experimental design and statistical analysis. According to project needs, the best combination of flexural strength is optimized. The enhancement mechanism and damage features are analyzed and evaluated by SEM, the result shows that the basalt fiber as enhanced component have a very good flexural strength enhancement effect, the maximum increased rate will reach 2.91 times. The effect on the strength of different age period is remarkable with different fiber fraction which is far greater than the water-cement ratio and sand-lime ratio. Basalt fiber have better physical and mechanical properties and better alkali resistance, some performance are second only to carbon fiber, and the cost of basalt fiber is far lower than carbon fiber, So the basalt fiber have a broad application prospects in the field of cement-based composite materials.

Basalt Fiber Reinforced Concrete

2011 ◽  
Vol 194-196 ◽  
pp. 1103-1108 ◽  
Author(s):  
Yong Xin Yang ◽  
Jie Lian
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Water Solubility ◽  
Mechanical Performance ◽  
Basalt Fiber ◽  
Plain Concrete ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Mechanical Performances ◽  
Better Than

In this paper, mechanical performances of 480 specimens are tested and influences of basalt fiber ratio, slenderness, soakage material are studied. Results indicate that mechanical properties of BFRC are better than plain concrete. It can be found that the best mechanical performance may be get when the basalt fiber soaked by water-solubility material and its ratio at 8.4 to 14 kg per square meter as well as slenderness at 600 to 800.

Experimental Research on Mechanical Behavior of Carbon Fiber Reinforced Concrete under Different Length of Carbon Fiber

2013 ◽  
Vol 641-642 ◽  
pp. 398-402
Author(s):  
Xiao Chu Wang ◽  
Jian Peng Zhang ◽  
Hong Tao Liu
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Carbon Fiber ◽  
Fiber Length ◽  
Fiber Reinforced Concrete ◽  
Enhancement Effect ◽  
Strength Increase ◽  
Transverse Strain ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

To further study the mechanical properties of carbon fiber reinforced concrete (CFRC) about carbon fiber length, and determine the optimum length of the fiber. In this paper, based on the test, the enhancement effect of four different length of carbon fiber reinforced concrete is studied. Compressive strength curves and load-deformation curves of the test blocks mixing the different lengths carbon fiber are obtained. In the loading process, the change curve of the ratio of transverse strain and longitudinal strain are obtained. The results showed that the compressive strength increase and after decrease with the increase of fiber length. When the length of carbon fiber is 10 mm, the improved effect is best, and it can effectively improve the brittle failure of concrete. When the length of carbon fiber is more 30 mm, the improved effect of deformation of carbon fiber reinforced concrete is not obvious.

Experimental Investigation on Shear Property of RC Beams with Aramid Fiber Mesh Stirrups

2011 ◽  
Vol 255-260 ◽  
pp. 20-24 ◽  
Author(s):  
Er Jun Wu ◽  
Jian Long Xing ◽  
Zhao Quan Zhu
Keyword(s):  
High Performance ◽  
Aramid Fiber ◽  
Rc Beam ◽  
Rc Beams ◽  
Rc Structures ◽  
High Durability ◽  
Shear Property ◽  
Shear Bearing Capacity ◽  
Fiber Mesh ◽  
Better Than

This paper develops a new-typed high-durability RC structures in which the steel stirrups are replaced by mesh stirrups weaved with soft high performance fiber belt. The experiments are carried out to investigate the shear property of six beams with soft aramid fiber mesh stirrups and one common RC beam and the results show that the failure state in the slope sections of the RC beams with fiber belt mesh stirrups is similar to the common RC beam. It was also found the shear property of beams with lean fiber mesh stirrups is better than that with vertical and horizontal mesh stirrups, and with the high-elastic- modulus fiber stirrups better than the low-elastic-modulus’s. In addition, the distributions of fiber stirrups strain at slope section are also observed. Based the experimental results, a model for beams with fiber mesh stirrups was established and the formula of shear bearing capacity was suggested.

Children's Performance on a Binaural Fusion Task

1981 ◽  
Vol 24 (4) ◽  
pp. 520-525 ◽  
Author(s):  
Bruce L. Plakke ◽  
Daniel J. Orchik ◽  
Daniel S. Beasley
Keyword(s):  
Enhancement Effect ◽  
Sensation Level ◽  
Large Measure ◽  
Filter Bandwidth ◽  
Research Results ◽  
Presentation Modes ◽  
Monosyllabic Words ◽  
Better Than

Binaural auditory fusion of 108 children (4, 6, and 8 years old) was studied using three lists of monosyllabic words (WIPI) presented at two sensation levels (30 and 40 dB). The words were processed to produce three bandwidth conditions (100, 300, 600 Hz) and were administered via three presentation modes (binaural fusion 1, diotic, binaural fusion 2). Results showed improved discrimination scores with increasing age, sensation level, and filter bandwidth. Diotic scores were better than binaural fusion scores for the narrower bandwidth conditions, but the diotic enhancement effect was seriously compromised in the widest bandwidth (600 Hz) condition. The results confirmed the contention that prior research results were equivocal due, in large measure, to procedural variability. Methods for reducing such variability and enhancing the clinical viability of binaural fusion tasks are suggested.

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