| Title |
Effect of Na2O·nSiO2 nanodispersion on the strength and durability of portland cement matrix |
| Another Title |
Na2O·nSiO2 nanodispersijos įtaka portlandcemenčio rišiklio matricos stiprumui ir ilgaamžiškumui. |
| Authors |
Skripkiūnas, Gintautas ; Janavičius, Eugenijus |
| Full Text |
|
| Is Part of |
Materials science = Medžiagotyra.. Kaunas : Technologija. 2010, vol. 16, no. 1, p. 86-93.. ISSN 1392-1320. eISSN 2029-7289 |
| Keywords [eng] |
Portland cement ; Sodium silicate solution (NSS) ; Cement paste ; Hardened cement paste ; Durability ; Porosity compressive strength ; The frost resistance factor Kf |
| Abstract [eng] |
The aim of the research is to investigate the effect of sodium silicate as nano-modifiers on the strength and durability of Portland cement binder matrix. Three-component binding system consisting of colloidal sodium silicate solution (NSS), superplasticizer suspension and Portland cement was used to determine properties of binder matrix. The effect of sodium silicate was determined on the setting time, consistency, density, compressive strength and frost resistance of binder matrix. The formation of nano-structure in cementitious composites under the influence of nano-modifiers (sodium silicate solution, superplasticizer) was investigated. The compressive strength of hardened cement paste after 28 days remains unchanged. The NSS has no effect on logarithmic law of strength increase with time. The compressive strength accelerates the hardening process in later hardening period. In hardened cement paste with NSS ettringite crystals are covered with amorphous phase, therefore increasing the closed porosity and frost resistance factor Kf. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2010 |
| CC license |
|
