A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Portland cement-blast furnace slag mortars activated using waterglass: – Part 1: Effect of slag replacement and alkali concentration
Highlights ► The activation of mortars of Portland cement with slag was investigated to reduce the low early strength. ► For mortars with 50–30% slag, the activation with water glass (4–10%Na2O) was not effective. ► For 80% slag the activation with 4–10%Na2O was effective. ► The highest strengths were for activated 100% slag cements.
Abstract Mortars of PC replaced with 0% to100% blast furnace slag were activated by waterglass at 0–10wt.% of Na2O, aiming to investigate the effect of the alkaline activation in reducing the low early strength observed in Portland cement–slag blends. For the activated blended mortars, increased %Na2O and slag contents favored strength; 80% slag showed favorable results with 6 and 10%Na2O, while 30–50% slag, the presence of the alkaline activator was unfavorable relative to the non-activated Portland cement and slag mortars. The microstructures showed denser matrices of hydration products as the amount of slag and alkali concentration were increased, corresponding to the strength observations.
Portland cement-blast furnace slag mortars activated using waterglass: – Part 1: Effect of slag replacement and alkali concentration
Highlights ► The activation of mortars of Portland cement with slag was investigated to reduce the low early strength. ► For mortars with 50–30% slag, the activation with water glass (4–10%Na2O) was not effective. ► For 80% slag the activation with 4–10%Na2O was effective. ► The highest strengths were for activated 100% slag cements.
Abstract Mortars of PC replaced with 0% to100% blast furnace slag were activated by waterglass at 0–10wt.% of Na2O, aiming to investigate the effect of the alkaline activation in reducing the low early strength observed in Portland cement–slag blends. For the activated blended mortars, increased %Na2O and slag contents favored strength; 80% slag showed favorable results with 6 and 10%Na2O, while 30–50% slag, the presence of the alkaline activator was unfavorable relative to the non-activated Portland cement and slag mortars. The microstructures showed denser matrices of hydration products as the amount of slag and alkali concentration were increased, corresponding to the strength observations.
Portland cement-blast furnace slag mortars activated using waterglass: – Part 1: Effect of slag replacement and alkali concentration
Acevedo-Martinez, E. (author) / Gomez-Zamorano, L.Y. (author) / Escalante-Garcia, J.I. (author)
Construction and Building Materials ; 37 ; 462-469
2012-07-22
8 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2012
| British Library Online Contents | 2012