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Effect of superplasticizer and shrinkage-reducing admixtures on alkali-activated slag pastes and mortars
This paper shows how several superplasticizers (polycarboxylates, vinyl copolymers, melamine and naphthalene-based) and shrinkage-reducing (polypropylenglycol derivatives) admixtures affect the mechanical and rheological properties and setting times of alkali-activated slag pastes and mortars. Two activator solutions, waterglass and NaOH, were used, along with two concentrations-4% and 5% of Na2O by mass of slag. All admixtures, with the exception of the naphthalene-based product, lost their fluidifying properties in mortars activated with NaOH as a result of the changes in their chemical structures in high alkaline media. The difference in the behaviour of these admixtures when ordinary Portland cement is used as a binder is also discussed in this paper.
Effect of superplasticizer and shrinkage-reducing admixtures on alkali-activated slag pastes and mortars
This paper shows how several superplasticizers (polycarboxylates, vinyl copolymers, melamine and naphthalene-based) and shrinkage-reducing (polypropylenglycol derivatives) admixtures affect the mechanical and rheological properties and setting times of alkali-activated slag pastes and mortars. Two activator solutions, waterglass and NaOH, were used, along with two concentrations-4% and 5% of Na2O by mass of slag. All admixtures, with the exception of the naphthalene-based product, lost their fluidifying properties in mortars activated with NaOH as a result of the changes in their chemical structures in high alkaline media. The difference in the behaviour of these admixtures when ordinary Portland cement is used as a binder is also discussed in this paper.
Effect of superplasticizer and shrinkage-reducing admixtures on alkali-activated slag pastes and mortars
Palacios, M. (author) / Puertas, F. (author)
Cement and Concrete Research ; 35 ; 1358-1367
2005
10 Seiten, 21 Quellen
Article (Journal)
English
| British Library Online Contents | 2005
Adsorption of superplasticizer admixtures on alkali-activated slag pastes
| Online Contents | 2009
Adsorption of superplasticizer admixtures on alkali-activated slag pastes
| Online Contents | 2009