Study on Carbonization Characteristics and Deterioration Mechanism of Recycled Concrete with Tailings and Polypropylene Fiber
Abstract
:1. Introduction
2. Experiment Material
3. Experiment Mix Ratio and Parameter Setting
4. Experiment Conclusion
4.1. Cube Compressive Strength
4.2. Splitting Tensile Strength
4.3. Axial Compressive Strength
4.4. Deformation Capacity
4.5. Stress–Strain Constitutive Curve
5. Durability Performance
6. Micro-Morphological Analysis
6.1. Nuclear-Magnetic Resonance (NMR)
6.2. Scanning Electron Microscope (SEM)
7. Conclusions
- (1)
- Polypropylene fiber had little effect on cube compressive strength and axial compressive strength, showing a trend of increasing first and then decreasing, with the best content of 0.6%. The splitting tensile strength increased obviously, increased first, and then tended to be stable, and the optimum content was 0.6–0.9%. The higher the content was, the greater the peak strain. The elastic modulus fluctuated slightly, the greater the content, the lower the elastic modulus. It can optimize the ductility of the prismatic test block and reduce the fluctuation of the falling section of the constitutive curve. The situation after carbonization was similar to that before carbonization, the position of certain peak points was approximately unchanged, and made their corresponding values fluctuate less.
- (2)
- Carbonization made the relative dynamic elastic modulus change less. As the fiber content increased, its value approximately increased first and then decreased, with a peak content of 0.6–0.9%. When the content was small, it had little effect on the carbonization depth, when it was large, the carbonization depth increased greatly and the carbonization resistance deteriorated seriously. The content in this critical state obtained approximately 0.6%.
- (3)
- Through NMR and SEM analysis, the fiber had a strong pulling effect, a small amount of addition can greatly improve its deformation ability, and had little effect on the pore diameter and porosity. However, after excessive addition, the contact area between different materials would increase. At the same time, the stress concentration phenomenon of the fiber after being stressed would also cause the harmful gaps in the concrete to increase, reducing the anti-carbonization ability, and the optimum mixing amount was approximately 0.6%.
Author Contributions
Funding
Conflicts of Interest
References
- Website of National Bureau of Statistics [DB/OL]. 2021. Available online: http://www.stats.gov.cn (accessed on 1 May 2020).
- Lv, X.D.; Liu, Z.A.; Zhu, Z.G.; Li, B.X. Study of the progress of tailings comprehensive utilization of raw materials in cement and concrete. Mater. Rep. 2018, 32, 452–456. [Google Scholar]
- Liu, K.; Chen, Y.D.; Huang, D. Analysis on the research current situation and future trends of recycled concrete and analysis of future research trends. Concrete 2020, 10, 47–50. [Google Scholar]
- Li, T.; Wang, S.L.; Xu, F.; Meng, X.Y.; Li, B.B.; Zhan, M. Study of the basic mechanical properties and degradation mechanism of recycled concrete with tailing before and after carbonization. J. Clean. Prod. 2020, 259, 120923. [Google Scholar] [CrossRef]
- Xu, F.; Wang, S.L.; Li, T.; Liu, B.; Zhou, Y. Mechanical properties and pore structure of recycled aggregate concrete made with iron ore tailings and polypropylene fibers. J. Build. Eng. 2021, 33, 101572. [Google Scholar] [CrossRef]
- Meesala, C.R. Influence of different types of fiber on the properties of recycled aggregate concrete. Struct. Concr. 2019, 20, 1656–1669. [Google Scholar] [CrossRef]
- Maek, M.; Jackowski, M.; Asica, W.; Kadela, M. Characteristics of recycled polypropylene fibers as an addition to concrete fabrication based on portland cement. Materials 2020, 13, 1827. [Google Scholar] [CrossRef] [Green Version]
- Kazmi, S.; Munir, M.J.; Wu, Y.F.; Patnaikuni, I.; Zhou, Y.; Xing, F. Axial stress-strain behavior of macro-synthetic fiber reinforced recycled aggregate concrete. Cem. Concr. Compos. 2019, 97, 341–356. [Google Scholar] [CrossRef]
- Ahmad, J.; Zaid, O.; Aslam, F.; Martínez, G.R.; Elharthi, Y.M.; Hechmi, E.O.M.; Tufail, F.; Sharaky, I.A. Mechanical properties and durability assessment of nylon fiber reinforced self-compacting concrete. J. Eng. Fibers Fabr. 2021, 16, 1–13. [Google Scholar] [CrossRef]
- Zaghloul, M.M.Y.; Mohamed, Y.S.; El-Gamal, H. Fatigue and tensile behaviors of fiber-reinforced thermosetting composites embedded with nanoparticles. J. Compos. Mater. 2019, 53, 709–718. [Google Scholar] [CrossRef]
- Fuseini, M.; Zaghloul, M.M.Y.; Elkady, M.F.; El-Shazly, A.H. Evaluation of synthesized polyaniline nanofibres as corrosion protection film coating on copper substrate by electrophoretic deposition. J. Mater. Sci. 2022, 57, 6085–6101. [Google Scholar] [CrossRef]
- Luo, Z.Y.; Yang, X.H.; Ji, H.L.; Zhang, C.C. Carbonization Model and Prediction of Polyvinyl Alcohol Fiber Concrete with Fiber Length and Content Effects. Int. J. Concr. Struct. Mater. 2022, 16, 1–14. [Google Scholar] [CrossRef]
- Wang, J.; Dai, Q.; Si, R.; Guo, S. Mechanical, durability, and microstructural properties of macro synthetic polypropylene (pp) fiber-reinforced rubber concrete. J. Clean. Prod. 2019, 234, 1351–1364. [Google Scholar] [CrossRef]
- Cao, S.; Yilmaz, E.; Yin, Z.; Xue, G.L.; Sun, L. Ct scanning of internal crack mechanism and strength behavior of cement-fiber-tailings matrix composites. Cem. Concr. Compos. 2021, 116, 103865. [Google Scholar] [CrossRef]
- Filho, J.N.S.; Silva, S.; Silva, G.C.; Mendes, J.C.; Peixoto, R.A.F. Technical and environmental feasibility of interlocking concrete pavers with iron ore tailings from tailings dams. J. Mater. Civil. Eng. 2017, 29, 04017104. [Google Scholar] [CrossRef]
- Lvarez-Fernández, M.; Prendes-Gero, M.B.; González-Nicieza, C.; Guerrero-Miguel, D.J.; Martínez-Martínez, J.E. Optimum mix design for 3d concrete printing using mining tailings: A case study in Spain. Sustainability 2021, 13, 1568. [Google Scholar] [CrossRef]
- Oritola, S.F.; Saleh, A.L.; Sam, A. Characterization of iron ore tailings as fine aggregate. ACI Mater. J. 2020, 117, 125–134. [Google Scholar] [CrossRef]
- Saedi, A.; Zanjani, A.J.; Khodadadi-Darban, A. A review on different methods of activating tailings to improve their cementitious property as cemented paste and reusability. J. Environ. Manag. 2020, 270, 110881. [Google Scholar] [CrossRef]
- Wei, T.; Quan, X.Y.; Yan, Q.Q.; Wang, C.X. Experimental study on mechanical properties of recycled concrete with high ductility iron tailings. China Concr. Cem. Prod. 2019, 8, 93–96. [Google Scholar] [CrossRef]
- Cui, H.H.; Yang, X.; Hu, J.L.; Zhang, Z.G.; Yao, S.J. Study on the matching and mechanical properties of regenerated concrete with iron tailings. Sichuan Build. Sci. 2018, 44, 100–105. [Google Scholar]
- Li, T.; Wang, S.L.; Xu, F.; Li, B.B.; Dang, B.; Zhan, M.; Wang, Z.Q. Study on Carbonization Damage Constitutive Curve and Microscopic Damage Mechanism of TRC. J. Renew. Mater. 2021, 9, 1413–1432. [Google Scholar] [CrossRef]
- Xu, F.; Wang, S.L.; Li, T.; Liu, B.; Li, B.B.; Zhou, Y. The mechanical properties of tailing recycled aggregate concrete and its resistance to the coupled deterioration of sulfate attack and wetting–drying cycles. Structures 2020, 27, 2208–2216. [Google Scholar] [CrossRef]
- Xu, F.; Wang, S.L.; Li, T.; Liu, B.; Zhao, N.; Liu, K.N. The mechanical properties and resistance against the coupled deterioration of sulfate attack and freeze-thaw cycles of tailing recycled aggregate concrete. Constr. Build. Mater. 2021, 269, 121273. [Google Scholar] [CrossRef]
- Ministry of Housing and Urban-Rural Construction of the People’s Republic of China. Code for Concrete Admixture Application (GB50119-2013); China Architecture & Building Press: Beijing, China, 2013.
- Wang, S.L.; Li, T.; Yang, T.; Zhang, B.; Ju, J. Experimental study on seismic behavior of RAC columns with silica fume and hybrid fiber. J. Build. Struct. 2013, 34, 122–129. [Google Scholar] [CrossRef]
- Zhang, B.Z.; Wang, S.L.; Zhang, B.; Jing, L.P.; Luo, S.C. Experimental analysis of the basic mechanical properties of recycled concrete. Concrete 2011, 7, 4–6. [Google Scholar]
- Ministry of Housing and Urban-Rural Construction of the People’s Republic of China. Specification for Mix Proportion Design of Ordinary Concrete (JGJ55-2011); China Architecture & Building Press: Beijing, China, 2011.
- Ministry of Housing and Urban-Rural Construction of the People’s Republic of China. Code for Design of Concrete Structures(GB/T50010-2015); China Architecture & Building Press: Beijing, China, 2015.
- Ministry of Housing and Urban-Rural Construction of the People’s Republic of China. Technical Standard for Recycled Concrete Structures (JGJ/T 443-2018); China Architecture & Building Press: Beijing, China, 2018.
- Gu, S. Basic Properties and Engineering Application of Recycled Concrete; Wuhan University Press: Wuhan, China, 2019. [Google Scholar]
- Wang, J.C.; Yang, W.T.; Zhou, J.H.; Zhang, X.F.; Mei, C.Z. Study on mechanical properties and compressive constitutive relationship of waste fiber recycled concrete. China Concr. Cem. Prod. 2018, 10, 49–54. [Google Scholar] [CrossRef]
- Ministry of Housing and Urban-Rural Construction of the People’s Republic of China. Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete (GB/T50082-2009); China Architecture & Building Press: Beijing, China, 2009.
- Eaha, A.; Bhab, A.; Imha, A.; Hma, B. Experimental investigation on mechanical properties of plain and rubberised concretes with steel–polypropylene hybrid fibre. Constr. Build. Mater. 2020, 233, 117194. [Google Scholar] [CrossRef]
- Akca, K.R.; Cakir, O.; Ipek, M. Properties of polypropylene fiber reinforced concrete using recycled aggregates. Constr. Build. Mater. 2015, 98, 620–630. [Google Scholar] [CrossRef]
- Yuan, C.F.; Wei, Y.R.; Li, S. Study on Mechanical Properties of Polypropylene Fiber Mixed Recycled Aggregate Concrete. J. Zhengzhou Univ. (Eng. Sci.) 2021, 42, 49–53. [Google Scholar]
- Hui, G.; Jta, B.; Yu, C.; Dan, L.; Bja, B.; Yue, Z.C. Effect of steel and polypropylene fibers on the quasi-static and dynamic splitting tensile properties of high-strength concrete. Constr. Build. Mater. 2019, 224, 504–514. [Google Scholar] [CrossRef]
- Wan, J.Y. Study on Material Properties of Fiber Reinforced Geopolymer Concrete; Zhengzhou University: Zhengzhou, China, 2019. [Google Scholar]
- Xu, J.; Wang, S.L.; Fu, Y.; Zhang, M.M. Experimental study on the performance of fiber reinforced RAC. Corcrete 2018, 1, 91–95. [Google Scholar]
- Dong, K.L. Research on Basic Mechanical Performance of Fiber Recycled Brick Aggregate Concrete; Xi’an University of architecture and technology: Xi’an, China, 2015. [Google Scholar]
- Wang, Q.Y.; Dong, J.F. Material Properties and Analysis of the Recycled Aggregate Concrete and Its Confined Structures; Science Press: Beijing, China, 2018. [Google Scholar]
- Bi, L.; Liu, Y. Experimental analysis on durability of carbon fiber reinforced concrete composite in carbonization environment. China For. Prod. Ind. 2020, 57, 29–32+40. [Google Scholar]
- Ramírez, G.P.M.; Byliński, H.; Niedostatkiewicz, M. Deterioration and protection of concrete elements embedded in contaminated soil: A review. Materials 2021, 14, 3253. [Google Scholar] [CrossRef] [PubMed]
- Yong, Y.A.; Dza, B.; Sga, B.; Zza, B.; Csa, B. A review on the deterioration and approaches to enhance the durability of concrete in the marine environment. Cem. Concr. Compos. 2020, 113, 103695. [Google Scholar] [CrossRef]
- Yoneyama, A.; Choi, H.; Inoue, M.; Kim, J.; Sudoh, Y. Effect of a nitrite/nitrate-based accelerator on the strength development and hydrate formation in cold-weather cementitious materials. Materials 2021, 14, 1006. [Google Scholar] [CrossRef]
- Ju, D.L.; Gao, J.H. Nuclear Magnetic Resonance Imaging: Physical Principles and Methods; Peking University Press: Beijing, China, 2014. [Google Scholar]
- Nasharuddin, R.; Luo, G.; Robinson, N.; Fourie, A.; Fridjonsson, E. Understanding the microstructural evolution of hypersaline cemented paste backfill with low-field nmr relaxation. Cem. Concr. Res. 2021, 147, 106516. [Google Scholar] [CrossRef]
Density (kg/cm3) | Length (mm) | Equivalent Diameter (mm) | Eensile Strength (MPa) | Breaking Elongation (%) | Elastic Modulus (MPa) | Retention Rate of Alkali Resistant (%) |
---|---|---|---|---|---|---|
1.12 | 22 | 0.08 | >350 | 12–40 | >4000 | >94.4 |
Varieties | Density (g/m3) | pH Value | Water Solubility | Solid Content (%) | Cl− CONTENT (%) | Na2SO4 Content (%) | R2O Content (%) |
---|---|---|---|---|---|---|---|
CLB-61 | 1.05 ± 0.02 | 6~7 | Mutually dissolvable | 20.0 ± 1.0 | ≤0.1 | ≤2.0 | ≤5.0 |
Test Block Number | Cementitious Material | Coarse Aggregate | Fine Aggregate | Water | Fibers | Water Reducer | ||
---|---|---|---|---|---|---|---|---|
NCA | RCA | Sand | IOT | |||||
NAC-21 | 538 | 1063 | 0 | 572 | 0 | 215 | 0 | 0 |
RAC-21 | 538 | 735 | 315 | 566 | 0 | 215 | 0 | 0 |
PE-RAC-1 | 538 | 748 | 320 | 403 | 173 | 215 | 0 | 8.07 |
PE-RAC-2 | 538 | 748 | 320 | 403 | 173 | 215 | 1.614 | 8.07 |
PE-RAC-3 | 538 | 748 | 320 | 403 | 172 | 215 | 3.228 | 8.07 |
PE-RAC-4 | 538 | 748 | 320 | 403 | 172 | 215 | 4.842 | 8.07 |
PE-RAC-5 | 538 | 748 | 320 | 403 | 172 | 215 | 6.416 | 8.07 |
Sequence of Steps | Making and Curing | Drying | Covering | Carbonizing | Loading and Testing |
---|---|---|---|---|---|
Parameter setting | Standard curing for 28 d | Drying for 48 h at 60 °C | Covering 5 surfaces with paraffin and leaving a carbonized surface | CO2 levels: (20 ± 3)% Temperature: (20 ± 2) °C Humidity: (60 ± 5)% | Loading rate: 0.5 MPa/s (compressive strength) 0.05 MPa/s (tensile strength) |
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Li, T.; Zhan, M.; Chen, X.; Xu, F.; Wang, S.; Liu, X. Study on Carbonization Characteristics and Deterioration Mechanism of Recycled Concrete with Tailings and Polypropylene Fiber. Polymers 2022, 14, 2758. https://doi.org/10.3390/polym14142758
Li T, Zhan M, Chen X, Xu F, Wang S, Liu X. Study on Carbonization Characteristics and Deterioration Mechanism of Recycled Concrete with Tailings and Polypropylene Fiber. Polymers. 2022; 14(14):2758. https://doi.org/10.3390/polym14142758
Chicago/Turabian StyleLi, Tao, Meng Zhan, Xiuyun Chen, Fan Xu, Sheliang Wang, and Xinxin Liu. 2022. "Study on Carbonization Characteristics and Deterioration Mechanism of Recycled Concrete with Tailings and Polypropylene Fiber" Polymers 14, no. 14: 2758. https://doi.org/10.3390/polym14142758