Characteristics of a thermally activated alumino-silicate pozzolanic material and its use in concrete
- CANMET, Ottawa, Ontario (Canada)
Canada Centre for Mineral and Energy Technology (CANMET) has an ongoing program dealing with the development of concrete having long-term durability. One of the means of achieving this objective is to incorporate supplementary cementing materials such as silica fume, fly ash, slag, and rick husk ash in concrete. The incorporation of these supplementary cementing materials in concrete leads to reduction in its porosity; this, in turn, leads to reduced permeability and increased durability of concrete. This paper presents the results of the physical and chemical properties of a thermally activated alumino-silicate material (MK), and deals with the properties of fresh and hardened concrete incorporating this material. The properties of fresh concrete investigated included workability, bleeding, setting time, and autogenous temperature rise. The properties of the hardened concrete investigated included compressive, splitting-tensile and flexural strengths, Young`s modulus of elasticity, drying shrinkage, resistance to chloride-ion penetration, freezing and thawing, and salt-scaling resistance. The properties of the MK concrete were also compared with those of the control portland cement concrete and the silica fume concrete.
- OSTI ID:
- 178309
- Journal Information:
- Cement and Concrete Research, Vol. 25, Issue 8; Other Information: PBD: Dec 1995
- Country of Publication:
- United States
- Language:
- English
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