Measurements of electric resistance and amount of consumption of portlandite were carried out in accelerated curing conditions by preparing pastes of Fine Ceraments, fly ash, silica fume, kaolin, acid clay, zeolite and quartz activated with portlandite. Electric resistances of reactive pozzolans sho
The measurement of pozzolanic activity
โ Scribed by A.J. Majumdar; L.J. Larner
- Book ID
- 102995684
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 128 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
Some comments are made on the applicability of the hydrofluoric acid method for determining pozzolanic activity. It is pointed out that in addition to silica some other constituents of pozzolanic materials such as pfa are also soluble in HF and the conductance of the solution may, therefore, not be directly relatable to the active silica content of the pozzolana.
๐ SIMILAR VOLUMES
In view of the increasing use of pozzolanic materials in hydraulic binders, there is great interest in designing a rapid and efficient method to evaluate their reactivity. The present paper describes a method for the evaluation of pozzolanic activity based on the measurement of compensated conductiv
The pozzolanic activity of pulverized fuel ash (p.f.a.) has been determined by measuring the rate of dissolution of silica from p.f.a, in 0.I M hydrofluoric acid. The rate of extraction of silica follows a logarithmic law and the rate constant is an index of the pozzolanic activity of the ash. Die