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A platform for research: civil engineering, architecture and urbanism
Simultaneous effects of microsilica and nanosilica on self-consolidating concrete in a sulfuric acid medium
https://orcid.org/0000-0002-0895-2124
Graphical abstract
HighlightsSeven percent substitution of micro-silica has the same effect as 2 percent of nano-silica.For the first time RS is used in the field of concrete technology.In contrast to micro-silica, nano-silica has no effect on residual compressive strength.Concrete performance and durability are considerably improved by using micro- and nano-silica simultaneously.
AbstractCombination of microsilica and nanosilica (colloidal silica) are considered to design a high strength self-consolidating concrete to resist in the sulfuric acid medium. Artificial intelligence was used to predict and compare the behavior of these two pozzolans in a sulfuric acid medium. Contour plots were used to investigate the products combination better. Thermogravimetric analysis (TGA) was also used to find the calcium hydroxide range while using these two pozzolans. TGA revealed that colloidal silica did not contribute to cement hydration within seven days of curing while a combination of them boosted calcium hydroxide consumption. The results show that more substitution of the pozzolans could lead to lower mass loss while nanosilica has marginal effect on the residual compressive strength. The results also revealed that 7 percent substitution of microsilica showed the same effect as 2 percent nanosilica replacement.
Simultaneous effects of microsilica and nanosilica on self-consolidating concrete in a sulfuric acid medium
https://orcid.org/0000-0002-0895-2124
Graphical abstract
HighlightsSeven percent substitution of micro-silica has the same effect as 2 percent of nano-silica.For the first time RS is used in the field of concrete technology.In contrast to micro-silica, nano-silica has no effect on residual compressive strength.Concrete performance and durability are considerably improved by using micro- and nano-silica simultaneously.
AbstractCombination of microsilica and nanosilica (colloidal silica) are considered to design a high strength self-consolidating concrete to resist in the sulfuric acid medium. Artificial intelligence was used to predict and compare the behavior of these two pozzolans in a sulfuric acid medium. Contour plots were used to investigate the products combination better. Thermogravimetric analysis (TGA) was also used to find the calcium hydroxide range while using these two pozzolans. TGA revealed that colloidal silica did not contribute to cement hydration within seven days of curing while a combination of them boosted calcium hydroxide consumption. The results show that more substitution of the pozzolans could lead to lower mass loss while nanosilica has marginal effect on the residual compressive strength. The results also revealed that 7 percent substitution of microsilica showed the same effect as 2 percent nanosilica replacement.
Simultaneous effects of microsilica and nanosilica on self-consolidating concrete in a sulfuric acid medium
https://orcid.org/0000-0002-0895-2124
Graphical abstract
HighlightsSeven percent substitution of micro-silica has the same effect as 2 percent of nano-silica.For the first time RS is used in the field of concrete technology.In contrast to micro-silica, nano-silica has no effect on residual compressive strength.Concrete performance and durability are considerably improved by using micro- and nano-silica simultaneously.
AbstractCombination of microsilica and nanosilica (colloidal silica) are considered to design a high strength self-consolidating concrete to resist in the sulfuric acid medium. Artificial intelligence was used to predict and compare the behavior of these two pozzolans in a sulfuric acid medium. Contour plots were used to investigate the products combination better. Thermogravimetric analysis (TGA) was also used to find the calcium hydroxide range while using these two pozzolans. TGA revealed that colloidal silica did not contribute to cement hydration within seven days of curing while a combination of them boosted calcium hydroxide consumption. The results show that more substitution of the pozzolans could lead to lower mass loss while nanosilica has marginal effect on the residual compressive strength. The results also revealed that 7 percent substitution of microsilica showed the same effect as 2 percent nanosilica replacement.
Simultaneous effects of microsilica and nanosilica on self-consolidating concrete in a sulfuric acid medium
Hendi, Ali (author) / Rahmani, Hamid (author) / Mostofinejad, Davood (author) / Tavakolinia, Ali (author) / Khosravi, Mohsen (author)
Construction and Building Materials ; 152 ; 192-205
2017-06-28
14 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017
SULFATE AND CHLORIDE RESISTANCE OF NANOSILICA AND MICROSILICA CONTAINED SELF-CONSOLIDATING CONCRETES
| BASE | 2018