Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behaviour of High Strength Concrete at High Temperatures
The paper reports results of experimental investigations of high temperature behavior of three high strength concretes made with different binder combinations. Ordinary cements, silica fume and class F fly-ash with superplasticizers were used as binders. The aggregate used was granite-based sand and crashed diabase. Compressive strengths (100 mm cubes) at the age of 28 days were 85.1...111 MPa. The three high strength concretes investigated showed very similar high temperature behavior. They all show in the temperature region from 100 C to 350 C a stronger loss of strength than normal strength concretes. The dense microstructure of the high strength concretes results in slower drying and so the higher risk of destructive spalling must be taken into account in structures exposed to fire.
Behaviour of High Strength Concrete at High Temperatures
The paper reports results of experimental investigations of high temperature behavior of three high strength concretes made with different binder combinations. Ordinary cements, silica fume and class F fly-ash with superplasticizers were used as binders. The aggregate used was granite-based sand and crashed diabase. Compressive strengths (100 mm cubes) at the age of 28 days were 85.1...111 MPa. The three high strength concretes investigated showed very similar high temperature behavior. They all show in the temperature region from 100 C to 350 C a stronger loss of strength than normal strength concretes. The dense microstructure of the high strength concretes results in slower drying and so the higher risk of destructive spalling must be taken into account in structures exposed to fire.
Behaviour of High Strength Concrete at High Temperatures
U. Diederichs (Autor:in) / U. M. Jumppanen (Autor:in) / V. Penttala (Autor:in)
1989
79 pages
Report
Keine Angabe
Englisch
Construction Materials, Components, & Equipment , Construction Equipment, Materials, & Supplies , High strength concretes , Fire resistant materials , High temperature tests , Fumes , Silicon dioxide , Fly ash , Binders(Materials) , Aggregates , Sands , Compressive strength , Heating , Thermal stability , Microstructure , Spalling , Graphs(Charts) , Foreign technology
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