Mechanical and Strain-Sensing Properties of Cement-Matrix Composite Containing Nano-Sized Carbon Black

2019 ◽  
Vol 815 ◽  
pp. 203-209
Author(s):  
Yan Feng Wang ◽  
Yi Zhao ◽  
Xiao Hua Zhao ◽  
Ran Hai
Keyword(s):  
Carbon Black ◽  
Compressive Loading ◽  
Cement Matrix ◽  
Structural Function ◽  
Matrix Composites ◽  
Strain Sensing ◽  
Reinforced Composite ◽  
Carbon Fiber Reinforced Composites ◽  
Reinforced Cement ◽  
Experimental Researches

An experimental researches was performed for carbon black-reinforced cement-matrix composites. The carbon black used was in the form of particles with a nano-size. Results show that when content of the carbon black is between 0.25% and 0.75% by weight of cement, both flexural and compressive strengths of the composite can be enhanced. Flexural strength increases up to 9.69%, and compressive strength increases up to 6.92%, respectively. Moreover, the carbon black-reinforced composite is of high strain-sensing ability. The fractional change in resistance () increases monotonically upon compressive loading, and decreases monotonically upon unloading. These properties indicate that the carbon black-reinforced composite can be used for structural function, while at the same time act as a strain sensor itself. Compared with carbon fiber-reinforced composites, the carbon black-reinforced composite has a low price and is easy for mixing.

The Influence of Carboxy Methyl Cellulose (CMC) and Solution pH on Carbon Fiber Dispersion in White Cement Matrix

2014 ◽  
Vol 493 ◽  
pp. 661-665 ◽  
Author(s):  
Ari Yustisia Akbar ◽  
Yulinda Lestari ◽  
Gilang Ramadhan ◽  
Septian Adi Candra ◽  
Eni Sugiarti
Keyword(s):  
Aqueous Solution ◽  
Carbon Fiber ◽  
Methyl Cellulose ◽  
Cement Matrix ◽  
Solution Ph ◽  
Fiber Dispersion ◽  
Reinforced Composite ◽  
Disperse Carbon ◽  
Reinforced Cement ◽  
Matrix Morphology

Dispersion of carbon fiber in cement matrix is one of main challenges for fabricating carbon fiber reinforced cement based materials. In this study, the dispersion of carbon fiber was improved by pre-dispersion of carbon fiber in basic aqueous solution using different concentrations of CMC. The relationships of CMC concentration and pH solution toward carbon fiber dispersion in aqueous solution was evaluated by UVvis spectroscopy. In order to understand how carbon fiber is dispersed in cement matrix, morphology fiber carbon reinforced composite was examined. Experimental results show that aqueous solution of CMC is effective to disperse carbon fiber. In addition, dispersion of carbon fiber increases with increasing of pH of CMC solution.

Micromechanics modeling of the uniaxial strain-sensing property of carbon nanotube cement-matrix composites for SHM applications

2017 ◽  
Vol 163 ◽  
pp. 195-215 ◽  
Author(s):  
Enrique García-Macías ◽  
Antonella D'Alessandro ◽  
Rafael Castro-Triguero ◽  
Domingo Pérez-Mira ◽  
Filippo Ubertini
Keyword(s):  
Carbon Nanotube ◽  
Uniaxial Strain ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Strain Sensing ◽  
Micromechanics Modeling

Electromagnetic Interference of Ferrocene-Doped Carbon Fiber-Reinforced Cement Composites

2011 ◽  
Vol 261-263 ◽  
pp. 638-641
Author(s):  
Chuang Wang ◽  
Ke Zhi Li ◽  
Zhen Jun Wang ◽  
Geng Sheng Jiao
Keyword(s):  
Carbon Fiber ◽  
Electromagnetic Interference ◽  
Cement Matrix ◽  
Cement Composites ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Frequency Range ◽  
Maximum Reflectivity ◽  
Reinforced Cement ◽  
Carbon Fiber Reinforced

The reflectivity of ferrocene-doped carbon fiber-reinforced cement-matrix composites against the electromagnetic radiation was measured in the frequency range of 8-18 GHz for different carbon fiber contents of 0.4, 0.6, 0.89, 1.33, and 1.78 wt% by mass of cement. The ferrocene was doped in 0.89, 1.78, 3.56, 4.89, and 6.27 wt% by mass of cement respectively. The maximum reflectivity reached -4.0 dB when the fiber percentage was 0.89 and the ferrocene was 3.56. The microwave was attenuated by 64 % through reflection. The minimum reflectivity -7.5 dB occurred when the fiber percentage was 1.33 and the ferrocene percentage was 4.89. The microwave was attenuated by 67.5 % through absorption. Prior to the fiber percentage of 0.89 and the ferrocene percentage of 3.56, the reflectivity kept rising.

Experimental Research on Mechanical Properties of Cement Based Composites PVA Fiber Reinforced

2013 ◽  
Vol 454 ◽  
pp. 242-245 ◽  
Author(s):  
Wei Ouyang ◽  
Guang Long Geng ◽  
Mao Lin ◽  
Xiao Qing Yu
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Mechanical Characteristics ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Airport Pavement ◽  
Reinforced Cement ◽  
Pva Fiber

Airport pavement surface mechanical characteristics and PVA fiber content, through experiments on PVA fiber reinforced cement matrix composites flexural strength, compressive strength and other mechanical properties are analyzed experimentally.

scholarly journals Wool-Reinforced Cement Based Composites

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3590
Author(s):  
Daria Jóźwiak-Niedźwiedzka ◽  
Alessandro P. Fantilli
Keyword(s):  
Mechanical Behavior ◽  
Natural Fibre ◽  
Acoustic Properties ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Research Activities ◽  
Research Problems ◽  
Reinforced Cement ◽  
Sheep Wool

In this paper, an overview of the latest research activities in the field of cement-based composites incorporating sheep wool reinforcement is presented. First, the characteristics of this type of natural fibre are described. Then, the current use of sheep wool fibres in cement-based composites is discussed. The research problems regarding the properties of cement matrix composites reinforced with sheep wool are divided into four groups: thermal and acoustic properties, mechanical behavior, durability issues, and microstructure aspects. The latter two groups are analysed separately, because both durability and microstructure are of particular importance for future applications of wool reinforcement. Finally, the main directions of future researches are presented.

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