Next Article in Journal
The Mechanical Properties and Chloride Resistance of Concrete Reinforced with Hybrid Polypropylene and Basalt Fibres
Previous Article in Journal
Nanocarbon/Poly(Lactic) Acid for 3D Printing: Effect of Fillers Content on Electromagnetic and Thermal Properties
Open AccessArticle

Experimental Research on Uniaxial Compression Constitutive Model of Hybrid Fiber-Reinforced Cementitious Composites

Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(15), 2370; https://doi.org/10.3390/ma12152370
Received: 11 June 2019 / Revised: 21 July 2019 / Accepted: 22 July 2019 / Published: 25 July 2019
In order to establish accurate compressive constitutive model of Hybrid Fiber-Reinforced Concrete (HFRC), 10 groups of HFRC specimens containing polyvinyl alcohol (PVA), polypropylene (PP), and steel fibers are designed and compressive testing is conducted. On the basis of summarizing and comparing the existing research, accuracy of various stress-strain constitutive model is compared and the method of calculating fitting parameters is put forward, peak stress, peak strain, and elastic modulus of specimens with different fiber proportion are analyzed, the calculation expressions of each fitting parameter are given. The results show that, under the condition that the volume of the hybrid fiber is 2% with the proportion of the steel fiber increase, the strength of the specimen increases, the peak strain decreases slightly, and the elastic modulus increases significantly. In specimens mixed with PVA-PP hybrid fiber, with the increase of PVA fiber proportion, the peak stress and elastic modulus of the material are improved, and the peak strain are decreased. The existing stress-strain expressions agree well with the tests. Accuracy of exponential model proposed in this paper is the highest, which can be applied in engineering and nonlinear finite element analysis of components. View Full-Text
Keywords: hybrid fiber concrete; SIR model; constitutive model; elasticity modulus hybrid fiber concrete; SIR model; constitutive model; elasticity modulus
Show Figures

Figure 1

MDPI and ACS Style

Cui, T.; He, H.; Yan, W. Experimental Research on Uniaxial Compression Constitutive Model of Hybrid Fiber-Reinforced Cementitious Composites. Materials 2019, 12, 2370. https://doi.org/10.3390/ma12152370

AMA Style

Cui T, He H, Yan W. Experimental Research on Uniaxial Compression Constitutive Model of Hybrid Fiber-Reinforced Cementitious Composites. Materials. 2019; 12(15):2370. https://doi.org/10.3390/ma12152370

Chicago/Turabian Style

Cui, Tao; He, Haoxiang; Yan, Weiming. 2019. "Experimental Research on Uniaxial Compression Constitutive Model of Hybrid Fiber-Reinforced Cementitious Composites" Materials 12, no. 15: 2370. https://doi.org/10.3390/ma12152370

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop