Influence of polymer superplasticizers on the properties of autoclaved aerated concrete

• Autorzy: Dziekan E. , Laska J. , Małolepszy J.
• Konferencja: 5th International Conference on Autoclaved Aerated Concrete "Securing a sustainable future" to be held at Bydgoszcz to celebrate 60 years of AAC experience in Poland, Bydgoszcz, September 14-17, 2011
• Języki publikacji: PL

Abstrakty

EN

Second generation superplasticizers based on polycarboxylates were investigated in terms of their influence on the properties of autoclaved aerated concrete (ACC). The macromolecules of the plasticizers contained polycarboxy and polyether segments, and free carboxylic groups gaining solubility of the plasticizer in water. Water solutions of the plasticizers of concentration of 30 wt% were applied as admixtures to concrete. Concrete samples were based on gypsum, calcium oxide and fly ash as binder and an aggregate. The concrete was produced by foam-gas-silicate (FGS) technique. Fresh mixtures both containing and not containing superplasticizers were autoclaved, and the hardened samples were characterized. The samples containing superplasticizer in amounts enabling to reduce water quantity to 20% showed density about 10% higher, and compressive strength about 20% higher comparing to the samples without plasticizers. Phase analysis did not show any differences between the concrete samples containing or not containing the admixtures. All samples contained tobermorite, hydrogranates, and C-S-H phase.

Słowa kluczowe

PL

beton komórkowy; superplastyfikator polimerowy; polikarboksylany; technologia PGS; skład fazowy

EN

autoclaved aerated concrete; polymer superplasticizer; polycarboxylates; foam-gas-silicate technology; phase composition

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2011
• Tom: nr spec.
• Strony: 34--38
• Opis fizyczny: Bibliogr. 10 poz., il.

Twórcy

autor

Dziekan E.

autor

Laska J.

autor

Małolepszy J.

• AGH University of Science and Technology, Faculty of Materials Science and Ceramics, AI. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

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