A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutions
AbstractThe potential release of elements from potassic and calcic–sodic feldspars into the concrete pore solution was evaluated by ICP-MS using 1N NaOH and KOH solutions at 80°C in accordance with the conditions set in the chemical test method. Materials were characterized by petrography, XRD and by XRF analysis. The influence of textural and microstructural characteristics on the leaching process was also analyzed by immersing polished plates of each mineral in 1N NaOH at 80°C for 7days. Optical microscope and SEM observations indicate that microstructural characteristics, such as cleavage zones, twins, grain–grain contact and the finer and less abundant phases in perthites, play a key role in the leaching process under alkaline conditions. Na2O, K2O, SiO2 and Al2O3 are supplied by hydrolysis, although the participation of other processes cannot be ruled out.
Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutions
AbstractThe potential release of elements from potassic and calcic–sodic feldspars into the concrete pore solution was evaluated by ICP-MS using 1N NaOH and KOH solutions at 80°C in accordance with the conditions set in the chemical test method. Materials were characterized by petrography, XRD and by XRF analysis. The influence of textural and microstructural characteristics on the leaching process was also analyzed by immersing polished plates of each mineral in 1N NaOH at 80°C for 7days. Optical microscope and SEM observations indicate that microstructural characteristics, such as cleavage zones, twins, grain–grain contact and the finer and less abundant phases in perthites, play a key role in the leaching process under alkaline conditions. Na2O, K2O, SiO2 and Al2O3 are supplied by hydrolysis, although the participation of other processes cannot be ruled out.
Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutions
Locati, Francisco (author) / Marfil, Silvina (author) / Baldo, Edgardo (author) / Maiza, Pedro (author)
Cement and Concrete Research ; 40 ; 1189-1196
2010-04-19
8 pages
Article (Journal)
Electronic Resource
English
Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic-sodic feldspars into alkaline solutions
| British Library Online Contents | 2010
Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutions
| Online Contents | 2010
Alkali release from feldspars into pore solutions
| British Library Online Contents | 2003
Alkali release from feldspars into pore solutions
| Elsevier | 2002
Alkali release from feldspars into pore solutions
| Online Contents | 2003