Application of an alternative way for silica fume dispersion in cement pastes without ultrasonication
Source abstract
Abstract
Abstract The dispersity of silica particles affects their influence in a composite. In this work, a solution for silica fume (SF) dispersion is proposed for application in cement mixtures, as de-agglomeration method. Sodium bicarbonate salt solution 0.01 M pH 13, with addition of SF consist the proposed dispersion (SBCS). The solution has low cost it is stable, easy and quick to be prepared and does not require special equipment. Dispersion was characterized using particle size distribution and ATR. Cement pastes with ultrasonicated colloidal suspension of SF in water (US) and with sodium bicarbonate - SF (CDS) are compared. DTA-TG, XRD analysis and SEM observation, along with the determination of mechanical and physical properties of the produced specimens are reclaimed. SBCS gave illustrative results after subjecting the specimens in durability tests. The results indicated that SBCS can be used to disperse SF affecting positively the microstructure and the macro-properties of cement systems.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Building materials and conservation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Nanotechnology in concrete- a review10.1016/j.conbuildmat.2010.03.014 ↗
2. Beneficial role of nanosilica in cement based materials - a review10.1016/j.conbuildmat.2013.05.052 ↗
3. Next generation nano-based concrete construction products: a review10.1007/978-3-642-16657-0_7 ↗
4. The evolution of porosity in lime-based mortars
5. Ultrasonic fragmentation of agglomerate powders10.1016/0009-2509(93)80258-R ↗
6. The role of the Van der Waals force in the agglomeration of powders containing submicron particles10.1016/0032-5910(85)80036-X ↗
7. The temperature effect on the adsorption mechanism of polyacrylamide on the silica surface and its stability10.1016/j.apsusc.2011.11.044 ↗
8. Possibilities of colloidal silica separation from water suspension in the polyethylene glycol (PEG) presence at different temperatures10.1080/01496395.2012.723105 ↗
9. Influence of polyvinylpyrrolidone adsorption on stability of silica aqueous suspension - effects of polymer concentration and solid content
10. Ultrasound-assisted synthesis of colloidal nanosilica from silica fume: effect of sonication time on the properties of product10.1016/j.apt.2014.05.011 ↗
11. Breakage of TiO2 agglomerates in electrostatically stabilized aqueous dispersions10.1016/j.powtec.2005.08.020 ↗
12. Influence of nano-SiO2 on the Portland cement pastes10.1016/j.compositesb.2011.12.015 ↗
13. Determination of agglomerate strength distributions. Part 3. Application to titania processing10.1016/0032-5910(91)80065-Q ↗
14. Effect of nano silica de-agglomeration, and methods of adding superplasticizer on the compressive strength, and workability of nano silica concrete
15. Influence of pH, high salinity and particle concentration on stability and rheological properties of aqueous suspensions of fumed silica10.1016/j.colsurfa.2009.07.050 ↗
16. Influence of solution pH, supporting electrolyte presence and solid content on the stability of aqueous nanosilica suspension10.1016/j.jiec.2015.05.003 ↗
17. EN 197-1:2000, Cement - part 1: composition, specifications and conformity criteria for common cements.
18. E-C Tsardaka, M. Stefanidou, G. Karagiannis, G. Apostolidis, Study of dispersed nanosilica in bicarbonate and borate solutions. Proceedings of 20th Infrared and Raman Users Group (IRUG12) Conference, 23–25 May 2016, Ormylia, Greece.
19. Iler · 1979
20. R.W. Zuhl, Z. Amjad, Solution chemistry impact on silica polymerization by inhibitors, Mineral Scales in Biological and Industrial Systems, pp. 173–199.
21. BS EN 196-1:2005, Methods of testing cement - part 1: determination of strength.
22. 11.3, Absorption of water by immersion under vacuum
23. BS EN 196-3:2005, Methods of testing cement - part 3: determination of setting time and soundness.
24. BS EN 1015-18:2002, Methods of test for mortar for masonry - part 18: determination of water absorption coefficient due to capillary action of hardened mortar.
25. Modification and dispersion of nano-silica10.1081/DIS-200035679 ↗
26. Silanol as a model for the free hydroxyl of amorphous silica: ab initio calculation of the interaction with water10.1021/j100369a013 ↗
27. Studies of alkali- silica reaction. Part 4. Effect of different alkali salt solutions on expansion10.1016/0008-8846(87)90040-8 ↗
28. Study on mono-dispersed nano-size silica by surface modification for underfill applications10.1016/j.jcis.2005.05.067 ↗
29. Surface modification to produce hydrophobic nano-silica particles using sodium dodecyl sulfate as a modifier10.1016/j.apsusc.2015.12.116 ↗
30. Microstructure of cement mortar with nanparticles10.1016/S1359-8368(03)00052-0 ↗
31. Calcium carbonate efflorescence on Portland cement and building materials10.1016/S0008-8846(02)00937-7 ↗
32. Microstructure of lime-pozzolan pastes with nanosilica10.1016/j.cemconres.2016.02.004 ↗
33. Effects of nano-silica on hydration properties of tricalcium silicate10.1016/j.conbuildmat.2016.09.003 ↗
34. Neville · 2002 · 537
35. Long-term mechanical resistance and durability of air lime mortars with large additions of nanosilica10.1016/j.conbuildmat.2014.02.030 ↗
36. SCC modification by use of amorphous nano-silica10.1016/j.cemconcomp.2013.09.001 ↗
37. Mechanism of sulphate attack on Portland cement concrete - another look10.1016/0008-8846(83)90040-6 ↗
38. Effects of gypsum formation on the performance of cement mortars during external sulfate attack10.1016/S0008-8846(02)00955-9 ↗
39. Deterioration of hardened cement paste under combined sulphate-chloride attack investigated by synchrotron XRD10.1016/j.solidstatesciences.2016.04.002 ↗