Indirect  sonication  effect  on  the  dispersion,  reactivity,  and microstructure of ordinary portland cement matrix

Mohamed Samy El-Feky; Passant Youssef; Ahmed El-Tair; Mohamed Serag; Mohamed Samy El-Feky; Passant Youssef; Ahmed El-Tair; Mohamed Serag

doi:10.3934/matersci.2019.5.781

AIMS Materials Science

2019, Volume 6, Issue 5: 781-797. doi: 10.3934/matersci.2019.5.781

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Research article

Indirect sonication effect on the dispersion, reactivity, and microstructure of ordinary portland cement matrix

1.
Department of Civil Engineering, National Research Centre, Egypt
2.
Civil Engineering Department, German University in Cairo, Egypt
3.
Civil Engineering Department, Cairo University, Egypt

Received: 14 June 2019 Accepted: 20 August 2019 Published: 27 August 2019

Utilizing nanotechnology for the production of nano cement may be considered as an innovative potential approach that can be reached via increasing the specific surface area of cement. Van der Waals forces are the main reason behind the agglomeration of cement particles in concrete. The balance between repulsive and attractive forces of cement particles has a profound effect on concrete properties. The present study focuses on the effect of ultrasonic processing at relatively low frequency on the dispersion of cement particles and investigating the effectiveness of such approach in increasing the sub-nano metric cement content leading to increasing cement reactivity. A qualitative analysis was conducted with a view to investigate the sonication effect on the mechanical properties of cement. In addition micro-structural analyses were conducted to understand the surface morphology and microstructure of cement composites using particle size distribution, scanning electron microscope, Thermo-gravimetric analysis, X-ray diffraction and atomic force microscopy tests. The results of the investigational study showed that the mechanical, and microstructure of cement pastes can be remarkably improved by subjecting the cement slurry to an optimum time of sonication. The proposed method helped in achieving specific surface area of 138900 m²/kg with sub-nano metric cement particles of 80% and gain in compressive strength of about 27%. The microstructural analysis performed revealed that the proposed sonication method had influenced the micro structure of the cement matrix by increasing the reactivity of the cement particles as a result of their transfer to the nano level. Moreover, the microstructural analysis highly confirmed the determined mechanical properties.
Citation: Mohamed Samy El-Feky, Passant Youssef, Ahmed El-Tair, Mohamed Serag. Indirect sonication effect on the dispersion, reactivity, and microstructure of ordinary portland cement matrix[J]. AIMS Materials Science, 2019, 6(5): 781-797. doi: 10.3934/matersci.2019.5.781

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Abstract

Utilizing nanotechnology for the production of nano cement may be considered as an innovative potential approach that can be reached via increasing the specific surface area of cement. Van der Waals forces are the main reason behind the agglomeration of cement particles in concrete. The balance between repulsive and attractive forces of cement particles has a profound effect on concrete properties. The present study focuses on the effect of ultrasonic processing at relatively low frequency on the dispersion of cement particles and investigating the effectiveness of such approach in increasing the sub-nano metric cement content leading to increasing cement reactivity. A qualitative analysis was conducted with a view to investigate the sonication effect on the mechanical properties of cement. In addition micro-structural analyses were conducted to understand the surface morphology and microstructure of cement composites using particle size distribution, scanning electron microscope, Thermo-gravimetric analysis, X-ray diffraction and atomic force microscopy tests. The results of the investigational study showed that the mechanical, and microstructure of cement pastes can be remarkably improved by subjecting the cement slurry to an optimum time of sonication. The proposed method helped in achieving specific surface area of 138900 m²/kg with sub-nano metric cement particles of 80% and gain in compressive strength of about 27%. The microstructural analysis performed revealed that the proposed sonication method had influenced the micro structure of the cement matrix by increasing the reactivity of the cement particles as a result of their transfer to the nano level. Moreover, the microstructural analysis highly confirmed the determined mechanical properties.

References

[1]	Damineli BL, Pileggi RG, John VM (2017) Influence of packing and dispersion of particles on the cement content of concretes. Rev IBRACON Estrut Mater 10: 998–1024. doi: 10.1590/s1983-41952017000500004
[2]	Alshehy AM, Ahmed SA, El-Feky MS, et al. (2018) Utilizing nano- to micro-scale particles based additives to enhance cement-dune sand composites. IJMTER 5: 104–114.
[3]	Hani N, Nawawy O, Ragab KS, et al. (2018) The effect of different water/binder ratio and nano-silica dosage on the fresh and hardened properties of self-compacting concrete. Constr Build Mater 165: 504–513. doi: 10.1016/j.conbuildmat.2018.01.045
[4]	Hamed N, El-Feky MS, Kohail M, et al. (2019) Effect of nano-clay de-agglomeration on mechanical properties of concrete. Constr Build Mater 205: 245–256. doi: 10.1016/j.conbuildmat.2019.02.018
[5]	Ahmed SA, El-Feky MS, Hefne EE (2018) Naphthalenesulfonate based super-plasticizer and ultra-sonication effects on the dispersion of CNTs in cement composites subjected to cyclic loading. IJMTER 5: 269–279. doi: 10.21884/IJMTER.2018.5136.OMKKB
[6]	Youssef P, El-Feky MS, Serag MI (2017) The influence of nano silica surface area on its reactivity in cement composites. IJSER 8: 2016–2024.
[7]	Sharobim KG, Mohamadien HA, Hanna NF, et al. (2017) Optimizing sonication time and solid to liquid ratio of nano-silica in high strength concrete. IJSER 8: 687–693.
[8]	Sharobim KG, Mohammedin H, Hanna NF, et al. (2017) Optimizing sonication time and solid to liquid ratio of nano-silica in high strength mortars. IJSER 3: 6–16.
[9]	Serag MI, Yasien AM, El-Feky MS, et al. (2017) Effect of nano silica on concrete bond strength modes of failure. Int J GEOMATE 12: 73–80.
[10]	Serag M, Elkady H, Elfeky M (2014) The effect of indirect sonication on the reactivity of nano silica concrete. IJSER 334–345.
[11]	El-Feky MS, Serag MI, Yasien AM, et al. (2016) Bond strength of nano silica concrete subjected to corrosive environments. ARPN-JEAS 11: 13909–13924.
[12]	Sobolev K, Gutierrez MF (2005) How nanotechnology can change the concrete world, Am Ceram Soc Bull 10: 14–18.
[13]	Lee J, Mahendra S, Alvarez P (2010) Nanomaterials in the construction industry, A review of their applications and environmental health and safety considerations. Am Ceram Soc Bull 4: 3580–3590.
[14]	Alyasri S (2010) The use of nanotechnology in construction sector. QJES 7: 68–80. .
[15]	Raki L, Beaudoin J, Alizadeh R, et al. (2010) Cement and concrete nano science and nano technology. Materials 3: 918–942. doi: 10.3390/ma3020918
[16]	Kumar RA (2011) Opportunities & challenges for use of nanotechnology in cement-based materials. NBMCW.
[17]	Patel AS (2013) An overview on application of nanotechnology in construction industry, IJIRSET 2: 6094–6098.
[18]	Collepardi M, Collepardi S, Skarp U, et al. (2004) Optimization of silica fume, fly ash and amorphous nano–silica in auperplasticized high-performance concrete. Proceedings of 8th CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, Las Vegas, USA, 221: 495–506.
[19]	Lai F, Sika SK, Zain M, wt al. (2010) Nano cement additives development for OPC strength enhancer and carbon neutral cement. Proceedings of 35th Conference on Our World in Concrete in Structures, Singapore.
[20]	Gopalakrishnan K, Birgisson B, Tylor P, et al. (2011) Nanotechnology in Civil Infrastructure, Berlin: Springer.
[21]	Mahajan YR (2012) Nanotechnology in the cement industry. Available from: http://www.nanowerk.com/spotlight/spotid=28101.php.
[22]	Birgisson B, Mukhopadhyay A, Geary G (2012) Nanotechnology in concrete materials. Available from: http://cvl.araku.ac.ir/download/Nano-and-concrete.
[23]	Aitcin PC, Jolicoeur C, MacGregor JG (1994) Superplasticizers: how they work and why they occasionally don't. Concr Int 16: 45–52.
[24]	Ramachandran VS, Malhotra VM, Jolicoeur C, et al. (1998) Superplasticizers: Properties and Applications in Concrete, Canada: CANMET Publication.
[25]	Sakai E, Daimon M (1995) Mechanisms of superplastification, in: Skalny J, Mindess S, Materials Science of Concrete, Westerville: Amercian Ceramic Society, 4: 91–111.
[26]	Sakai E, Daimon M (1997) Dispersion mechanisms of alite stabilized by superplasticizers containing polyethylene oxide graft chains, Proceedings of the 5th Canmet/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete, American Concrete Institute, Detroit, US, 187–202.
[27]	Uchikawa H (1999) Function of organic admixture supporting high performance concrete, In: Cabrera JG, Rivera-Villarreal R, Proceedings of the International RILEM Conference on the Role of Admixtures in High Performance Concrete, France: RILEM Publications, 69–96.
[28]	Lewis JA, Matsuyama H, Kirby G, et al. (2000) Polyelectrolyte effects on the rheological properties of concentrated suspensions. J Am Ceram Soc 83: 1905–1913.
[29]	Flatt RJ (2001) Polymeric dispersants in concrete, In: Hackley VA, Somasundaran P, Lewis JA, Polymers in Particulate Systems: Properties and Applications , Boca Raton: CRC Press, 247–294.
[30]	Flatt RJ, Houst YF (2001) A simplified view on chemical effects perturbing the action of superplasticizers. Cement Concrete Res 31: 1169–1176. doi: 10.1016/S0008-8846(01)00534-8
[31]	El-feky MS, Serag MI, Elkady H (2013) Effect of nano silica de-agglomeration, and methods of adding super-plasticizer on the compressive strength, and workability of nano silica concrete. Civ Environ Res 3: 21–34.
[32]	Hashem MM, Serag MI, Elkady H, et al. (2015) Increasing the reactivity of silica fume particles using indirect sonication: effect of process parameters. Civ Environ Res 2: 537–557.
[33]	Jones CA, Grasley ZC, Ohlhausen JA (2012) Measurement of elastic properties of calcium silicate hydrate with atomic force microscopy. Cem Concrete Comp 34: 468–477. doi: 10.1016/j.cemconcomp.2011.11.008
[34]	Taylor HFW (1993) Nanostructure of C–S–H: current status. Adv Cem Based Mater 1: 38–46. doi: 10.1016/1065-7355(93)90006-A
[35]	Nonat A (2004), the structure and stoichiometry of C–S–H. Cem Concrete Res 34: 1521–1528.
[36]	Gauffinet S, Finot E, Lesniewska E, et al. (1998) AFM and SEM studies of CSH growth on C3S surface during its early hydration, Proceedings of the International Conference on Cement Microscopy , Guadalajara, Mexico, 337–356.

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