Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Frost Resistance of High Early-Age Strength Concretes for Rapid Repair
The study presented herein examines frost resistance of different types of high early-age strength concretes made for rapid repair including Type III, Type V, and calcium sulfoaluminate (CSA) cement concretes. To this aim, high early-age strength concretes were made with different cement contents, including 386, 445, 504, and 564 kg/m3 (650, 750, 850, and 950 lb/yd3) for Type V cement concretes; 326, 386, and 445 kg/m3 (550, 650, and 750 lb/yd3) for Type III cement concretes; and 326, and 386 kg/m3 (550 and 650 lb/yd3) for CSA cement concretes. This study also compares frost resistance of different types of high early-age strength concrete for a common cement factor of 386 kg/m3. The results of this study showed that while CSA cement concretes had the fastest strength developments (shortest opening time which is the time to reach a minimum compressive strength of 20 MPa), they had considerably weak frost resistance. Type III and Type V cement concretes exhibited significantly superior frost resistance when compared to CSA cement concrete. The frost resistance reduced as cement content was increased and improved as curing age was extended.
Frost Resistance of High Early-Age Strength Concretes for Rapid Repair
The study presented herein examines frost resistance of different types of high early-age strength concretes made for rapid repair including Type III, Type V, and calcium sulfoaluminate (CSA) cement concretes. To this aim, high early-age strength concretes were made with different cement contents, including 386, 445, 504, and 564 kg/m3 (650, 750, 850, and 950 lb/yd3) for Type V cement concretes; 326, 386, and 445 kg/m3 (550, 650, and 750 lb/yd3) for Type III cement concretes; and 326, and 386 kg/m3 (550 and 650 lb/yd3) for CSA cement concretes. This study also compares frost resistance of different types of high early-age strength concrete for a common cement factor of 386 kg/m3. The results of this study showed that while CSA cement concretes had the fastest strength developments (shortest opening time which is the time to reach a minimum compressive strength of 20 MPa), they had considerably weak frost resistance. Type III and Type V cement concretes exhibited significantly superior frost resistance when compared to CSA cement concrete. The frost resistance reduced as cement content was increased and improved as curing age was extended.
Frost Resistance of High Early-Age Strength Concretes for Rapid Repair
Maler, Matthew (Autor:in) / Najimi, Meysam (Autor:in) / Ghafoori, Nader (Autor:in)
17th International Conference on Cold Regions Engineering ; 2017 ; Duluth, Minnesota
Congress on Technical Advancement 2017 ; 121-131
07.09.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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