Why sodium silicate is not taken in molar in geopolymer concrete?
Answers
Natural zeolite–clinoptilolite from deposit near Beli Plast, Bulgaria, is used.
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The zeolite is activated by sodium silicate, sodium hydroxide and sodium carbonate.
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Compressive strength of geopolymer mortars is measured at 28 day.
•
Geopolymer pastes are studied with XRD, DTA/TGA, SEM.
•
Adhesion to concrete.
Abstract
One of the potential raw materials for preparation of geopolymers is the natural zeolite. In the present report, the used natural zeolite (clinoptilolite) is from huge deposit near Beli Plast, Bulgaria. Geopolymer pastes and mortars are prepared by using three different alkaline activators—sodium hydroxide, sodium silicate and sodium carbonate.
Explanation:
Natural zeolite–clinoptilolite from deposit near Beli Plast, Bulgaria, is used.
•
The zeolite is activated by sodium silicate, sodium hydroxide and sodium carbonate.
•
Compressive strength of geopolymer mortars is measured at 28 day.
•
Geopolymer pastes are studied with XRD, DTA/TGA, SEM.
•
Adhesion to concrete.
Abstract
One of the potential raw materials for preparation of geopolymers is the natural zeolite. In the present report, the used natural zeolite (clinoptilolite) is from huge deposit near Beli Plast, Bulgaria. Geopolymer pastes and mortars are prepared by using three different alkaline activators—sodium hydroxide, sodium silicate and sodium carbonate.