Badania skuteczności działania domieszek polikarboksylanowych w zaczynach cementowych

• Autorzy: Janowska-Renkas E.

Warianty tytułu

EN

Study of effectiveness of polycarboxylate admixture in cement pastes during the time

• Języki publikacji: PL

Abstrakty

EN

This work presents the research results of effectiveness of superplasticizer based on polycarboxylate in cement pastes with different cements (CEM I, CEM II, CEM III and CEM V). It has been shown that in the initial period, up to 15 minutes, the EP admixture has greater effectiveness in cement pastes with Portland cement CEM I (regardless of its amountfrom 0.5 to 2% wt.) than in pastes containing mineral additives. However, as time goes by (up to 60 minutes), the effectiveness of EP admixture in cement pastes containing cement with mineral additives (blast furnace slags in CEM II/B-S 32,5 R, CEM III/A32,5 N and slags with fly ashes in CEM V/A-S-V 32,5 R) is greater than for cement pastes containing cement without additives (CEM I 42,5 R), what allows top reserve their fluidity for longer.

Słowa kluczowe

PL

beton; technologia betonu; dodatki mineralne; domieszki chemiczne; domieszki polimerowe; zaczyn cementowy; materiały budowlane

EN

concrete; concrete technology; mineral additives; chemical admixtures; polymer admixtures; cement paste; building materials

• Wydawca: Komisja Inżynierii Budowlanej Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Roczniki Inżynierii Budowlanej
• Rocznik: 2012
• Tom: z. 12
• Strony: 61--64
• Opis fizyczny: Bibliogr. 7 poz., tab., wykr.

Twórcy

autor

Janowska-Renkas E.

• Politechnika Opolska, Opole

Bibliografia

• [1]. Aïtcin P.-C., Cements of yesterday and today: Concrete of tomorrow. Cement and Concrete Research, 30 (9), 2000, p. 1349-1359.
• [2]. Burgos-Montes O., Palacios M., Rivilla P., Puertas F., Compatibility between superplasticizer admixtures and cements with mineral additions. Construction and Building Materials 31, 2012, p. 300-309.
• [3].Yamada K., Takahashi T., Hanehara S., Matsuhisa M., Effects of the chemical structure on the properties of polycarboxylate-type superplasticizer, Cement and Concrete Research, 30, 2000, p. 197–200.
• [4]. Borsoi A., Collepardi S, Copolla L., Troli R.,Collepardi E.M., Advances in superplasticizers for concrete mixtures, Il Cemento, 69 (3), 1999, p. 234-244.
• [5]. Puertas F, Santos H, Palacios M, Martinez-Ramirez S., Polycarboxylate superplasticiser admixtures: Effect on hydratation. Microstructure and rheological behaviour in cement pastes. Advances in Cement Research, 17, 2005, p. 77.
• [6]. Kurdowski W., Chemia cement i betonu. Wydawnictwo Polski Cement, Wydawnictwo Naukowe PWN, Warszawa 2010.
• [7]. Grzeszczyk S., Janowska-Renkas E., The influence of small particle on the fluidity of blast furnace slag cement paste containing superplasticizers. Construction and Building Materials, 26 (1), 2012, p. 411-415.