Effect of nano-SiO2, nano-Al2O3 and nano-Fe2O3 powders on compressive strengths and capillary water absorption of cement mortar containing fly ash: A comparative study

Effect of Nano-Alumina on Pore Structure and Durability of Class F Fly Ash Self-Compacting Mortar

“…As it can be observed from the results, the water absorption in the mixtures with NA was increased significantly by replacing the nanoparticles. Oltulu and Sahin (2013) also reported that replacing Al 2 O 3 nanoparticles, the water absorption of specimens was enhanced (Oltulu and Sahin, 2013). The addition of NA into mixtures at a proportion of 1%, decreased the water absorption by about 4.2% which was the highest level of decrease compared to the other samples.…”

“…The addition of micro-and nano-particles of SiO 2 has importantly reduced the Cl ion percentage and increased the electrical resistivity at later ages, namely for the mixtures with higher percentages of admixture. The impact of nano-SiO 2 , nano-Al 2 O 3 and nano-Fe 2 O 3 powders on the compressive strength and capillary water absorption of cement mortar containing fly ash was studied by Oltulu and Sahin (2013). It was found that nano-powders boost the pozzolanic activity and mechanical and physical properties of mortars can be improved.…”

“…Researchers have already perfoemed studies on the application of materials in nano scale and/or pozzolanic materials in self-compacting mortar or concrete with scope to improve mechanical and physical properties (Barbhuiya, 2011;Hou et al, 2012;Madandoust et al, 2015;Mohseni et al, 2015a;2015b;Yang et al, 2015). However, there is limited research concentrated on the cement-based materials properties containing nano-Al 2 O 3 (Nazari and Riahi, 2011b;Li et al, 2006;Oltulu and Sahin, 2013;Barbhuiya et al, 2014). Jalal et al (2012) investigated the effects of micro-and nano-SiO 2 particles on the durability and micro structural of high-performance self-compacting concrete.…”

“…SCC is able to be compacted under its own weight without the need for vibration, segregation or bleeding. This results the SCC application to facilitate and ensure precise filling of restricted areas and heavily reinforced structural members (Nazari and Riahi, 2011a;Safiuddin et al, 2010;Oltulu and Sahin, 2013;Jalal et al, 2012;Madandoust et al, 2011).…”

Feasibility of Using Nanoparticles of SiO2 to Improve the Performance of Recycled Aggregate Concrete

“…In previous studies, several types of materials with nanoparticles have been used to improve the mechanical properties, durability behavior, and microstructure of cement paste, mortar, and concrete, for example, nano-SiO 2 [16][17][18], nano-TiO 2 [15,19], nano-Al 2 O 3 [20,21], nano-Fe 2 O 3 [21], carbon nanotubes [22], nanoclay [15], and nanolimestone [18]. However, among these nanoparticles, nano-SiO 2 (nanosilica) can be considered as the most frequently used one in improving the performance of concrete [15,17].…”